Opa1612 vs opa1642 vs opa16 reddit. LM4562 3. However default 2134 is already pretty good and well-balanced Reddit Pinterest Tumblr WhatsApp Email Share Link. Will be trying these in gain stage: OPA1611, If you use a modern audio opamp, such as the LM4562/LME49720, OPA1612, OPA1656, etc. The OPA1641, OPA1642, and OPA1644 series of operational amplifiers are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions. Just check the rails aren't over +/-18V. I preferred the Sparkos for having the smoothest and most natural treble without loss of detail. The temperature range is specified from –40°C to +125°C. When we developed the OPA1656, this was also a major design target for us, and the designer and myself spent quite awhile in the lab with previous CMOS audio op amps (specifically Common-Mode Voltage (V) C004 OPA164x Family Traditional JFET-Input Amplifier IN-Pre-Output Driver OUT IN+ V+ V-Product Folder Sample & Buy Technical Documents Tools & Software Support & Community OPA1641, OPA1642, OPA1644 SBOS484D –DECEMBER 2009–REVISED APRIL 2016 OPA164x SoundPlus™ High-Performance, We tried OPA1612, OPA1656, NE5532, The OPA1642 for instance has a diff input voltage max to the supplies. When we developed the OPA1656, this was also a major design target for us, and the designer and myself spent quite awhile in the lab with previous CMOS audio op amps (specifically Below are THD+N vs. OPA1656 Phono Preamp: Split •Avoid input values below 4 V to prevent degraded VIO that results in an apparent gain greater than 1. Part Number: OPA1642 Other Parts Discussed in Thread: OPA1652. 1 µF ceramic bypass capacitors are sufficient in most applications. There is only 2 large capacitors in the power supply 1 x 1000uf 16, and 1 x 2200uf 16v, and 4 x 100uf capacitors of various values and about 4 x 47uf 6. However, since the output signal, VOUT, is a voltage divider of Vo between re of T1 and R3, The article linked below isn't the be-all and end-all on op amps tests, but very informative. I have a 1988 carver stereo per-amplifier. OPAMP based • Slew Rate: 10 V/μs • Wide Gain Bandwidth: 18 MHz (G = 1) • Unity-Gain Stable • Rail-to-Rail Output • Wide Supply Range: ±2. OPA1612 is fuller sounding - especially lower midrange but also more dynamic. 5 ±1 mV dVOS/dT Input offset voltage drift VS = ±2. tnt-audio. 3 2 µV/°C PSRR Power-supply rejection ratio VS = ±2. Did anyone here buy them? Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. 1nV/√Hz Noise, Low THD and Precision. The single of the OPA1612 is the OPA1611. The LME49860 has a wide supply range of ±2. The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications I've decided to change the gain opamp to the venerable OPA1612. Their distortion is not specified in the audio band. Gallery Archive Articles. It shows the PCM1704 interface to the digital filter, the I/V converter, and the DAC post filter. 06-18-2019 at The OPA1611 and OPA1612 offer rail-to-rail output swing to within 600 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range. Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. They require a SOIC-8 to DIP-8 adapter though. 5 Electrical Characteristics: VS = ±2. • Professional Audio Equipment Both the OPA1611 and OPA1612 are available in merch: https://krasserstoff. These devices also have a high output drive capability of ±30 mA. An easy and cheap one to try if you want to see if swapping leads to an audible difference. I'm currently using the OPA1612 and OPA1642 in combo with my phono pre and like the sound. 5 V to ±15 V • Shutdown current: 0. 18 Did anyone here buy OPA1612 from Adeleparts2010? (See attached image. ) OPA1612-Q1 www. This may cause instability in some second-order filter designs. @raoultrifan Dude I gonna pick up the Opa1612 next purchase but the OPA1652AIDR was 2 bucks cheaper and well let’s not be pc OPA1642. TI’s OPA1612 is a SoundPlus™ Audio Operational Amplifier with 1. Solid State. com/artist/HGich. 5nV / 16MHz / 9V/μs / 2. Device Information PART NUMBER CHANNEL PACKAGE(1) OPA1655 Single D (SOIC, 8) For I/V: OPA1692 is best, compared to - OPA1612, OPA2192, OPA2209, OPA1652, NE5532, LME9720, OPA1622, OPA1602, OPA1662 For LP: OPA1692 for now, I have good expectations from OPA2209 but they are out of stock. Click the top one (the one that looks like a play button) you can configure spotify from there. 5 V or less than –0. OPA1612-Q1: 1Mb / 31P [Old version datasheet] SoundPlus High-Performance, Bipolar-Input Audio Operational Amplifier Burr-Brown (TI) OPA134_071: 403Kb / 14P: High Performance AUDIO OPERATIONAL AMPLIFIERS OPA134: 432Kb / 14P: High Performance AUDIO OPERATIONAL AMPLIFIERS More results. 25 V to ±18 V At TA = 25°C and RL = 2 kΩ, unless otherwise noted. If you really feel the need for something faster, look at ADA4898-2 or ADA4896-2 (+/-5V supplies max). That unit came with the Sonic Imagery's 990ENH discrete operational amplifier ("opamp") in the buffer stage (pre-amplifier). Audio, Audio, Audio! Amplifiers, Phono preamp, and Analog Audio Review. Compared to OPA627 and OPA827, OPA828 has improved headroom. Now all the folks are using opa2134 op -amps as the replacement. IIUC the folks at Sparkos designed the board for Allo or they collaborated on it. Selection of an appropriate op amp for the I/V converter is critical for obtaining optimum dynamic performance from the PCM1704. 8 bucks for a genuine part. T Live +AcidAftershow Lenovobeach-Tour 2024 / 2025 alle Konzerte I tried OPA1622, OPA627 and OPA1612 at I/V stage and OPA1612 is clearly the best to my ears. Over this supply range the LME49860 maintains excellent common-mode rejection, power supply rejection, and low input bias current. com SLOS931A –NOVEMBER 2015–REVISED NOVEMBER 2015 6. I'm waiting for OPA1656 and ADA4896 to try at I/V stage. 5V inside of the positive rail . 25 V to ±18 V, or 4. BTW it is a real pity OPA2828 does not exist in SOIC. These devices operate over a very wide supply voltage range of ±2. Sound is more "color", and "massive". Composite amplifier is Mouser offers inventory, pricing, & datasheets for Texas Instruments OPA1612 Series Audio Amplifiers. My output is single ended 2Vrms . Source & Line. Low THD and Precision OPA1612-Q1 The difference for the OPA627 is far more realistic and more intimate. 000015% THD+N Total Unpopular opinion- If you are talking about measured performance in the audio band, it probably is OPA1612 or LME49720. Even AD797 or OP627 cant According to the TI datasheets OPA1612 has less noise than OPA1656. 3 v caps, Service manaul Mega File Upload - hfe_technics_sl-pg440a_service. Output Current characteristic curves seem to behave in opposite manners. My phono preamp, bye the way, uses OPA1611/1612 and OPA1641/1642s- amongst others. My question is (I cannot see it in the datesheet) for best THD+N , do I need to feed +- 15V or I can use +- 5V with no influence on THD+N . PNG (41. 00006% at 1 kHz. (3) Input terminals are diode-clamped to the supply rails (VS+, VS–). • Professional Audio Equipment Both the OPA1611 and OPA1612 are available in Of the op amps in my collection the massive misbehavers are the OPA1656, the LME49990 and the OPA1612. Common-Mode Voltage (V) C004 OPA164x Family Traditional JFET-Input Amplifier IN-Pre-Output Driver OUT IN+ V+ V-Product Folder Sample & Buy Technical Documents Tools & Software Support & Community OPA1641, OPA1642, OPA1644 SBOS484D –DECEMBER 2009–REVISED APRIL 2016 OPA164x SoundPlus™ High-Performance, Thank you all for your replies. Three icons to the left vertically from the bottom. ES9038PRO best I/V op amp. The operational amplifier is mounted on a DIP8 socket and can therefore be very simply installed on a • Wide Supply Range: ±2. Some Part number from the same manufacture Texas Instruments, Inc. This op amps offer rail-to-rail output swing to within 200 mV of the power supplies with a 2-kΩ load, which increases headroom and maximizes dynamic range. Graph is single supply voltage follower. Dear TI E2E support, Hi there, Our team made a prototype of a phono-stage amplifier (pic. Others than that, the Manufacturer: Part # Datasheet: Description: Texas Instruments: OPA1642: 742Kb / 22P [Old version datasheet] High-Performance, JFET-Input AUDIO OPERATIONAL AMPLIFIERS OPA1642: 865Kb / 25P [Old version thanks for your tips! i have tested the opa2604 and the LME49720 compared to the ne5532. Vendor's Bazaar. You can use almost any good op-amp. And the newer JFET parts from TI (OPA827, OPA1642) show the best performance. The OPA1642 is significantly inferior to the OPA1612 in many regards (GPW product, output drive, distortion vs output load, input voltage noise for example). The amplifier is powered by 2 x 9V batteries for low noise operation. Geniune NE5532p or NE5532AP 2. The OPA827 for example has superior load drive,much lower distortion and miniscule DC offset. The OPA1611 and OPA1612 op amps 3. So, you try different devices and measure. Common-Mode Voltage (V) C004 OPA164x Family Traditional JFET-Input Amplifier IN-Pre-Output Driver OUT IN+ V+ V-Product Folder Sample & Buy Technical Documents Tools & Software Support & Community OPA1641, OPA1642, OPA1644 SBOS484D –DECEMBER 2009–REVISED APRIL 2016 OPA164x SoundPlus™ High-Performance, The output swing for Aol should be considered as it is different between the two devices. It's not perfect, the OPA1642/2140/827 are really really good in that regard, Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. 25 V to ±18 V ±0. Company: Texas Instruments, Inc. 25 V to ±18 V. post the replies of Buson Audio An OPA1612 has slightly better specs than an LM4562---less noise and distortion, The only way you're going to audibly hear a difference in these unobtanium-low distortion opamps is if they're wildly misbehaving, Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. 1) base on the circuit in OPA1642's datasheet. Opa1656 has good phase response at high frequency. N. The new OPA1622 delivers lowest distortion and noise, high linear output current, and low power, enabling the highest performance for professional and • Wide Supply Range: ±2. 1 1 μV/V INPUT BIAS CURRENT VCM = 0 V ±60 ±250 nA IB Input bias current VCM = 0 V, DRG package only ±60 ±300 nA IB over temperature(2) TA = –40°C to +85°C I can see that a lot of hobby builders tend to use the discrete solution, but I can also see that some of the high-end Op-Amps are hitting distortion and noise figures that i would think is hard to beat like the OPA1612 with its 1. Also, the internal noise is quite low and comparable with very low noise op-amps. I did replace OPA1612 for OPA1656, and also switched ADC input range for the 1. All five op amps have more than half the noise compared to the NJM4560. The external emitter follower circuit you show above will allow you to significantly increase the output current without much change in the output current of OPA1611 so you will improve THD performance but only at the base of T1 (pin 6 or Vo). This amplifier achieves very low noise density with an ultra-low distortion. Home Amplifiers. A 1. Part #: OPA1642. My statements were verified: - OPA1611/1612 are optimized for better distortion than the OPA211 (already pretty good). USB DAC PCM1794A, OPA1622. If soldering surface mount isn't your thing you can order them presoldered from the brown dog adapter The OPA169x operational amplifiers achieve a new level of performance for low-power amplifiers with a low 4. The Lounge. Slightly less transparent when compared to the OPA2828, it sounded 'muddy' in comparison. The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications Even better, try the OPA1612 Since the NJM353 is FET input, try the new OPA1642. the differences aren't huge, but big enough to make a change worthwhile. According to the datasheet, THD+N TI E2E support forums The OPA1612-Q1 device is a dual, SoundPlus, bipolar-input operational amplifierthat achieves achieve very low 1. 00 : Crosstalk - 110dB PSRR - 80dB min, typ 100dB Distortion - 0. VCM = VOUT = midsupply, unless otherwise noted. 5 (V+) + 0. Device Information PART NUMBER CHANNELS PACKAGE(1) OPA1677 Single SOIC (8) OPA1678 Dual SOT-23 (5) SOIC (8) VSSOP (8) OPA1679 Quad SON (8) SOIC (14) TSSOP (14) QFN (16) (1) For all available packages, see the package option addendum at the end of the data The OPA1612-Q1 device is a dual, SoundPlus, bipolar-input operational amplifierthat achieves achieve very low 1. The dip in the THD+N curve for the OPA1642 is a range-switching effect on the Audio Precision and not the actual Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. pdf ••• The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. Change Location. 000015% at 1 kHz. Or perhaps it took the lessons learned on the 1612 and applied them during the design of the 1642. The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications 36V, 10MHz, Low Distortion High Drive Rail-to-Rail Output Audio Operational Amplifiers 8-SOIC OPA1642 is the no brainer really as it is an almost riskless easy drop in in many cases. With OPA1632 both channels show equally low -116 dBV (non-weighted) noise while with LME49724 there is some variation in one channel. English. Of course there are a number of other factors to consider, like the ability to drive the input impedance of the following circuitry These devices operate over a very wide supply voltage range of ±2. TL072 fig 28. Recently I reviewed the Nord Three SE 1ET400A Dual Mono Stereo Amplifier. You can check the data sheets, Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. No doubt the OPA1642 is a fine opamp and I can imagine people like it's warmth and punch, but the OPA2828 is simply on a different level. Hi team, The following two sets of Output Voltage vs. Also, I am in talks with Burson Audio over this. Vendor's I think the problem I'm seeing with the OPA2156, and to a lesser extent the OPA1656 is that the 1/f knee for the noise is much higher than for the OPA1612 and OPA1642. For gain: OPA209 but only against NE5534 and V6V singles. Test on sonic difference, Anyway, I made listening test on ADA4627 Brz and 4637 Arz. 3 nV/√ Hz noise density with an ultralow distortion of 0. Although I have to think the noise from the resistors in the difference amplifier stage the JFETs used in the OPA1642 input stage still have an edge over CMOS (1656) for low frequency noise. Joined Sep 7, 2023 Messages 27 Likes 2. These are SOIC8 size, but you can buy OPA1612 opamps on eBay pre-soldered on a SOIC to DIP adapter. Misc. - high levels of DC precision are generally not required by audio customers (audio equipment makers). For OPA1642, the output current (limit) appears to increase with increasing temperature. No hump at all and IMD of two devices together looks quite low, at least 3 times better vs DIY 9038PRO(which is 12x times more expensive vs 9038Q2M) I have to remeasure DR/SNR and THD+N as well, I also swapped OPA627/37 and the AD8610 in my headamp, however i could tell little to no difference. Opamps vs Opamps: Stock Xduoo's OPA1612 vs AD708SQ vs Burson V5i-D: Stock opamps are sounding like you hear music from a room next door. Now I use OPA1612 for i/v and LPF, distortion is gone but sound is flat. SQ was about the same as other ESS-based dacs in that class. Rolling opa1642, opa1612, muses8920, 2xopa627bp, lme49720na, opa2134. but I think there is a big difference to what the chinese offers the "high-end smartphone" factor :) There are some things to watch out for when swapping op amps. I've done more research and actually have decided against the 2211 and will be using the opa1612 instead for the following reasons: - opa1612 supports 45ma full output current (which could be useful since it's an output We would like to show you a description here but the site won’t allow us. Compared to OPA1612 however it's a toss. I also notice the more airy sound and the overall music presentation is more special with this op-amp. Close to zero DC mv at its output would enable removal of the dreaded electrolytic coupling caps which will definitely lower colouration and OPA1612-Q1 Precision Audio Amplifier Texas Instruments OPA1612-Q1 Precision Audio Amplifier is a dual, SoundPlus, bipolar-input operational amplifier. 25V min / CMOS OPA1642 - OPA1612 (which is barely available in SOIC8 at the moment) - ADA4898-2 - OPA1656 (if the circuit around it is right, But I doubt that you will hear much difference, Facebook X (Twitter) Reddit Pinterest Tumblr WhatsApp Email Share Link. We would like to show you a description here but the site won’t allow us. Texas Instruments' OPA1612 (dual) bipolar-input operational amplifier #1. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT AUDIO PERFORMANCE 0. interactions between channels, even when overdriven or overloaded. These devices operate over a very wide supply range of ±2. Unfortunatly with the new OPA1612 I have obtained a lot of noise on the output channel. The OPA1612-Q1 device is a dual, SoundPlus, bipolar-input operational amplifierthat achieves achieve very low 1. The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications • Slew Rate: 10 V/μs • Wide Gain Bandwidth: 18 MHz (G = 1) • Unity-Gain Stable • Rail-to-Rail Output • Wide Supply Range: ±2. A custom reel is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. The OPA1642 has the JFET input stage- thus reducing the input current noise- reduced common mode input distortion and sensitivity to source impedances, and lower standing Texas Instruments OPA1612 ระดับ วงจรขยายระบบเสียง มีจำหน่ายที่ Mouser Electronics Mouser ให้บริการสินค้าคงคลัง การประเมินราคา และใบข้อมูลสำหรับ Texas Instruments OPA1612 I have an Onix XCD-99 which is basically a Music Hall CD-25. TPA3250 somebody is listening? It's already confirmed that ne5532, supplied with amp are fake. I’ve heard $500k speakers (Backes & Müller BM100 if you want names) that, in the respective setup and to my ears, were clearly inferior to the best $100k speakers, and minimalist $50k setups (DAC, monoblocks, speakers) that easily outperformed most $500k+ setups you hear at By newer I meantnewer, because OPA1612 is a newer design then let's say NE5532 or even LM4562. frequency plots. Aol for the OPA2134 with a 600 ohm load has an output swing that is 2. 3V inside of each supply. The uppgrade to lm4562 is a no-brainer if youre interested in hifi, and clearly worth 5 dollars . The OPA1612-Q1 device offers rail-to-rail output swing to within 600mV with a 2kΩ load. Español $ USD United States. of ±2. OPA1656: High-Performance CMOS Audio Op Amp. Unfortunately, I cannot use the full sized V5/6 due to space constraint, so V5i is the only option for me. The OPA1642, however, is also LESS expensive ($2. 2 dB at 1 kHz, while driving a 32-Ω load at 100-mW output power. The OPA1662 (dual) and OPA1664 (quad) series of bipolar-input operational amplifiers achieve a low 3. ti. Both fet based opamps sounds a little bit more solid in the bass(not OPA1612 on paper has lower voltage noise but whether its lower noise in practice depends on the circuit impedances. See the LM4562 vs If you're looking for an opamp substitution, I'd try OPA1642 to replace OPA2604. I am designing a IV stage and summing using opa1612. ) As per the attached image over 3000 have been sold. Op amps do differ in their distortion profiles. OPA1612 is one the most low-noise opamps ever built, so totally recommended for unity-gain stages (LPF or output stage of a DAC, but also I/V stage too). This device operates over a very wide supply range of ±2. 5V to ± 18V, ± 5V to ± 15V, DIP As far as I know this is the only difference between the two versions (except the price!) I'm wondering if there are any significant qualitative differences that would set these two apart. Yes, it's a very subjective question, so what I am looking is the highest class of sound -- In my opinion, also as said by Tangent, the openness and the cleaness of OPA627/37 put them into a higher league After working with some OPA1612 on my recent Topping PA5 D01 Module replacement project (at ASR), a friend sent me a few OPA1612 opamps he ordered when they were in stock since i couldnt get them anywhere. This device also has a high output drive capability of ±30 mA. Texas Instruments (TI) introduced the newest addition to the company’s Burr-Brown Audio line, a next generation of the widely adopted OPA1612 audio operational amplifier (op amp). I'll try opa2156, opa828, njm4580 along with opa827 opa1612 in o2 circuit with 32 and 16 ohm load. Volume knob on Xduoo XD05 bal needs +2 steps compared to other opamps I tried (below), but I never needed to turn its gain switch on. 7 µF tantalum in parallel with 0. common mode voltage that I've measured on any op amp. Or check it out in the app stores A Phone that has ES9018K2M DAC and an OPA1612 Op-amp? While beating the note 4 in specs?? WTF? engadget. Skip to Main Content +49 (0)89 520 462 110 . Reddit Pinterest Tumblr WhatsApp Email Share Link. Thanks for the information on "running hotter". I took out the Audio Jade AD797BR from my Zishan Z1 because it's too dark. 9 mA of supply current to accommodate the power-supply constraints of many types of audio products. I'd like something between OPA637 and OPA1642. 000015% THD or the OPA1642 if JFET is the way to go. LME49720 sound is boringand too light. 8ma quiescent current per channel - half as much as OPA2134,OPA1656 is the best boise performer The OPA1642 is the best choice that you can make other than incredibly expensive ones that provide very, very, slightly less noise and higher distortion. 5 V greater or less the supply rails must be current-limited I found that OPA1612 was in the ultimate soundplus collection that's why i have change for it. Attachments Part Number: OPA1642 Other Parts Discussed in Thread: TLE2426, , OPA1656, JFE150, JFE2140, OPA1612, LME49720, OPA891. 699. If I'm not mistaken, opa1642 is a real JFET. 5 V to 36 V; Quiescent current: 3. Amplifiers. 6 mA of supply current per channel. I currently have the AD8610 still in there. 004% @20KHz The above parameters are insignificant to the audio level variations imposed by substandard audio recordings, room modes and compromised Tubey, better late than never - I just replaced all NE5532 amps in Benchmark DAC1 with OPA1612 and play it so far for few hours. People have already replaced & tested with 1. The OPA1622 includes a shutdown mode, allowing the amplifiers to be switched from normal operation to a standby Here is an example from a diyaudio member. The OPA1652 and OPA1654 op amps offer rail-to-rail output swing to within 800 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range. I was wondering if the OPA2604's could be replace with a dual opamp like the OPA1612 with similar or hopefully better results than the OPA627's Switched over to OPA1642 just because of that (that one sounds fine as well). The higher current drive of the OPA2822 would be beneficial. So for a low cost the LM4562 or OPA2134. Expand user menu Open settings menu. The OPA1622, dual, bipolar-input, SoundPlus™ audio operational amplifier achieves a very low, 2. Datasheet: Download OPA1642 Datasheet: Quote I swapped these for several different op amps including OPA1612, Burson V6 Vivid, and OPA627. alongside with some aliexpress el`cheapos for like 2 buck a piece instead of 7. Both (I believe SoundPlus high-performance, bipolar-input audio op amp from Texas Instruments. The AD8620 was my fav, i would have to tried to swap between the OPA627 in my 0404, but I was very pleased with the amount of clarity and separation i got, was definitely worth it. 1mV) give the amplifier excellent operational amplifier DC performance. Theme - Light; OPA1642 vs OPA1662-Q1 Compare result: OPA1642 ,OPA1662-Q1 . Excuse me, it's not the OPA1642, it's the TPA6120A2 vs OPA2134, which one is better for audio, which has better quality, thanks. 8-nV/√ Hz noise density with an ultralow THD+N of –119. 25 V to ±18 V or 4. 6 mA per Channel are unity-gain stable and provide excellent dynamic • Rail-to-Rail Output behavior over a wide range of load conditions. 00005% at 1 kHz. Log In / Sign Up; Advertise on Reddit; Shop Collectible Avatars The LME49860's outstanding CMRR (120dB), PSRR (120dB), and V OS (0. OPA828 / OPA2828 vs OPA627. Did anyone buy OPA1612 from Adeleparts2010? diyAudio Community Figure 5 shows single channel circuit connections for a typical PCM1704 application. 2V inside the negative rail and 2. Design & Build. I try to use a cheap component like NE5532P, no noise, with OPA2134 no noise with the OPA1612 a lot of noise. OPA2134 I was not able to find much differences vs the stock OPA1612 initially but as I spent more time with it the differences became more apparent. Details; Discussions; Posts; This discussion; 10,312 posts. 85 mA (VS = ± 5 V) • Temperature range: –40°C to +85°C 2 Applications *UPDATE* Revision 2 uploaded which adds a OPA1642 buffer between the Volume Pot and the OPA1622 *UPDATE2* First Cut at PCB added Thanks! Attachments. High performance OPA1602 + TPA6120A2 Composite Headphone Amplifier. My understand if noise isn’t a problem the opa1656 is great alternative to the opa1612. The OPA1641, OPA1642, and OPA1644 are specified from –40°C to +85°C. (The TEAC uses an OPA1642 opamp, for whatever that's worth. 25 V to ±18 V 0. The OPA1641, OPA1642, OPA1612 SoundPlus™ Audio Operational Amplifier SOIC-8 Texas Instrument. You can choose different carrier options based on the quantity of parts, including full reel, custom reel, cut tape, tube or tray. Hi there probaly a simple question maybe not. 5 V to 36 V) on 3. ) The only notable difference in sound is that the HA-250 has a lower noise floor. Skip to main content For I/V the best one would be the SS V6 (the best from above, not from the market! I find the MUSES01 as being a bit better for I/V), same applies for Low-Pass Filter. He talked to me about OPA1611's versus OPA134's as well as the OPA1612's versus OPA2134's. The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications They are referring to the OPA16 88, OPA2107). The OPA1611 and OPA1612 op amps are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions. com Open. 25 V to ±18 V TA = –40°C to +125°C(2) 0. Dynamic resistance of zener diode is lower than required resistor which should result in lower output noise. Member Areas. . The OPA1612 comes in a SOIC-8 package, and the NJM2068D is old-school DIL package, so I first used a small PCB to convert it to DIL. 5-nV/√ Hz noise density with an ultra-low distortion of 0. Great for guitar fuzz boxes. e. NE5532 is a very good amplifier especially for the price ($0. Thread Starter. Addon BalOut has placeholder for THAT1606 balanced buffer but as can be seen from the graphs this is a serious OPA137 — Single, 36-V, 1-MHz operational amplifier with rail-to-rail input to V+ OPA141 Precision Operational Amplifier OPA1612 JFET-Input Audio OpAmps OPA1641-Q1 — Single Automotive Sound-Plus High-Performance, JFET-Input Audio Op Amps OPA1642 These devices operate over a very wide supply voltage range of ±2. Analog Line Level. 4. LME49720 4. OPA1612 Opamps vs Opamps: Stock Xduoo's OPA1612 vs AD708SQ vs Burson V5i-D: Stock opamps are sounding like you hear music from a room next door. 5). Reddit's original DIY Audio subreddit to discuss speaker and amplifier projects of all types, OPA1642 sucks 1. Low- and Mid-Frequency Test Signals for Evaluation of Room Modes // Measurements: Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. The OPA1611 and OPA1612 offer rail-to-rail output swing to within 600 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range. 25 V to ±18 V, on only 3. He gives strong recommendations for some applications and also caveats about ill-informed op amp rolling. 5 V to 36 V • Dual and Quad Versions Available • Small Package Sizes: Dual: SO-8 and MSOP-8 Quad: SO-14 and TSSOP-14 2 Applications • Analog and Digital Mixers • Audio Effects Hi all, Tried few OPAMPs myself in I/V, LPF, VAS and BUFFER stages with my Essence One DAC/headamp, like: NE5532, LM4562, NJR2114, OPA1602, LME49720, MUSES8820, MUSES8920, The OPA1642 has more open at the high frequency, it is more detail but it noticeable sharp and edgy sound. which is a decent but outdated portable DAC/amp. The only device where I really noticed that an expensive opamp might make sense is the Matrix HPA-3B where the difference between SS V6 Classic and the default LME49720 was very obvious with sensitive cans (I'm only referring to background noise here; the audio quality was about the same in an A/B test). I must Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. It has the most stable input capacitance vs. The OPA1612 offers rail-to-rail output swing to within 600 mV with a 2 kΩ load, which increases headroom and maximizes dynamic range. This gave me a chance to It would most likely be +/-15V (30V total). Following industry standards, a brass shim connects an 18-inch leader and trailer on Not long after AX published Michael Steffes composite OPA1612/TPA6120A2 design in March, 2021, Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. Mouser offers inventory, pricing, & datasheets for Texas Instruments OPA1612 Series Audio Amplifiers. New Audio Op Amp The OPA1612 and OPA827 are much better than any of these but these are SOIC and you’ll need an adapter with experience soldering skills. • Professional Audio Equipment Both the OPA1611 and OPA1612 are available in Actually, the OPA1612 and OPA1688 are available in SO-8, not bad. the ne5532 looks a bit The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. 25 V to ±18 V The dual version features completely independent • Single and Dual Versions Available circuitry for lowest crosstalk and freedom from interactions between channels, even when overdriven 2 Applications or overloaded. 8ma quiescent current per channel - half as much as OPA2134,OPA1656 is the best boise performer now, but there many different purposes with different requirements. The next op-amp I am planning to try is the OPA1612 but perhaps the DAC is the limiting factor and perhaps the measurements will look very similar to the OPA2134 even if the OPA1612 is a really good op-amp. He’s optimized the distortion for the OPA1612 into the TPA6120A2 for lowest distortion and that’s not what I’m about. Goggle bill d mod carver c-1. It was recently re-capped and all new guts put in . Audio, Audio, Audio! Amplifiers, Phono preamp, I was looking at opa1642 and opa1602 Thanks. The recent swap I did was from opa1656 to opa1612 in the v3. Analogue Source. The OPA1622 is a slow device compared to the OPA1612/OPA1656. I seem to recall that the OPA1642 is newer than the OPA1612. Like Reply. 9 mA per channel; The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. i expected OPAP’s are definitely the best, then ZPAP’s, then NPAP’s. • Professional Audio Equipment Both the OPA1611 and OPA1612 are available in Hi Partner11, As @chermann (chris) mentioned, please have a look at the thread, most of the thread, deals with FX502S Pro. The NE5532 is used everywhere as its sound profile is Newer so-called audiophile op-amps have a higher bandwidth, than the traditional ones, so are more sensitive to board layout and can easily oscillate. The OPA1612-Q1 device offers rail-to-rail output swing to within 600 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range. Home. Check the spec, 4627 OPA275, OPA2604, OPA2132, OPA2134, OPA211/2211, OPA1612, OPA1642, OPA2107, OPA249, NE5532, LM6171, TL072 Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Thanks for the link. I see now, there have been other instances of noise reported as well. Digital Line Level. Find parameters, ordering and quality information. I'm not sure on the output current. It's FET, mainly specified for audio, very low distortion (especially for a FET opamp!), Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. 1-nV/√ Hz noise density with an ultralow distortion of 0. diyAudio Community I talked to a TI/B-B applications engineer today. 5V to ±22V. 0 µF-4. It made a difference in sound and I'm not gonna deny that. TL074 is easily surpassed by OPA1644, I too find that the OPA1612 and OPA1642 are fantastic upgrade/replacements in a whole lot of professional and consumer audio gear out there equipped with comparatively The quick answer to your question is: No. Digital Source. So, it is a different design and chip. Last edited: 2020-10-05 9:04 pm More options VOS Input offset voltage VS = ±15 V ±100 ±500 μV dVOS/dT VOS over temperature(2) TA = –40°C to +85°C 1 4 μV/°C PSRR Power-supply rejection ratio VS = ±2. The OPA1622 offers extremely-high ac PSRR and CMRR specifications that eliminate noise from power supplies, making the OPA1622 OPA1642 vs OPA1662 Compare result: OPA1642 ,OPA1662 . 25 V to ±18 V The dual version features completely independent More expensive doesn’t always mean better, also this is always very subjective. OPA227 has 2 diodes in series , anti-parrallel = 1,2 V pp, maybe PNP like OPA1662 ( has single anti but worse CMRR. diyAudio Community diyAudio Store. Low THD and Precision OPA1612-Q1 These devices operate over a very wide supply voltage range of ±2. OPA1642 sucks 1. It has OPA2604 buffer amps that many have replaced with dual OPA627BP's with good results. Yes, I know everyone likes to think you need GHz op-amps for I/V. Something like that. OPA1642 vs OPA1688 Compare result: OPA1642 ,OPA1688 . ( calling herself a geek chick on headphone forums :clown: ) OPA1642 might be better in noninverting use - it has very flat input Z vs Vcm while the OP275 datasheet explicitly warns of input fet-substrate C modulation if spending money, 'better' specs are the goal, then depending on application maybe OPA827 soic singles can be used with adapter boards Instead of using more common voltage divider to set output voltage I decided to use zener diodes. TI’s OPA1642-Q1 is a Dual automotive soundplus™ high-performance, JFET-input audio op amps. Also they are very hot. DIY (Do-It OPA137 — Single, 36-V, 1-MHz operational amplifier with rail-to-rail input to V+ OPA141 Precision Operational Amplifier OPA1612 JFET-Input Audio OpAmps OPA1641-Q1 — Single Automotive Sound-Plus High-Performance, JFET-Input Audio Op Amps OPA1642 In the case of my two Aiyima a04 and switching between ne5532 amp to lm4562 amplifier, the difference soundwise is clearly bigger than moving your head 30 cm in the listening room. NE5532 is a very good Here’s a great article comparing opa2156 CMO vs opa1612. OPA1612 sounds better than any transistor However it draws quite substantial current when idle. Joined Oct 29, 2015 44. It appears that the OPA1611/2 have a lower noise Now i tested opa1612 with lme49720 and 1612 is better in my opinion. The speed of the op amp in I/V converter is not critical because the signal, the stair, has small steps, so, it is not necessary large slew-rate. When driving heavy loads a larger demand is placed on the supply bypassing. But that does not say anything about the SQ. 25 V to ±18 V or (4. The NJM4560DX does not appear to be FET type, though I thought a FET type like OPA1642 would suit this circuit? or maybe OPA1612 which isnt FET like the The official unofficial subreddit for Elite Dangerous, we even have devs lurking the sub! Elite Dangerous brings gaming’s original open world adventure to the modern generation with a stunning recreation of the entire Milky Way galaxy. I had the chance to gather up a selection of opamps from my parts bin, including BB OPA2604, OPA637, AD823, LME49860, JR4556, Muses8820 and 8920, and compare them against each other along with a Burson V6 Classic (thanks to them for sending me an evaluation). Please confirm your currency selection: Mouser Electronics - Electronic Components Distributor. By default 13V zeners yields about +/- 14. Hi Dotneck, thanks for explaining. The OPA1622 op amp is unity-gain stable and provides excellent dynamic behavior over a wide range of load conditions. not going into high frequency oscillation) are different and just swapping ICs may cause problems -- you • Wide Supply Range: ±2. When I do serious listening test between them, just an A - B testing, not back and forth, I OPA1642 Datasheet. I don't care about listening tests or something else, just OPA1612 could certainly be used here, but it may be overkill in this application since noise performance of this circuit is likely to be dominated by the noise from the FET input There's no shortage of candidates here, and the new OPA1656 is a great option, but you could also check out: OPA1642, OPA1678, OPA827, and the newer OP Amp Rolling: the Philips CD753 (aka Marantz CD5000) with MUSES8820 vs OPA1692 vs LME49723 and Others - an article by Paul Hunting on TNT-Audio, Internet HiFi magazine, www. OPA1611/1612 would be the closes. OPAP’s and early NPAP’s have the same Serbian furniture, which is crappy for iron sight shooting but at least the OPAP stocks are original milsurp with serial numbers and coats of arms and stuff, while the NPAP furniture sets are newer production copies intended for civilian versions. 5V at output with less than 10mV difference between negative and positive rails. georgehifi. Forums. 8Vrms and remeasured the range -15dbfs. 3 5 µV/V INPUT BIAS CURRENT IB Input bias current VCM = 0 V(3) ±10 ±20 pA IOS Input offset current VCM = 0 V ±10 ±20 Quoting from page 10 of the June 1992 rev-A datasheet where this might have started: First, multiple bypassing is recommended in any precision application. It's a VERY good bipolar junction opamp with incredible specs. Latest reviews. Input signals that swing more than 0. I think that's doable for anyone who can afford a device to listen to music on in the first place. They were ok, very neutral, until I bought The dual and quad versions feature completely independent circuitry for lowest crosstalk and freedom from interactions between channels, even when overdriven or overloaded. Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Texas Instruments OPA1612 Series Audio Amplifiers are available at Mouser Electronics. parametric-filter Amplifiers; parametric-filter Audio; parametric-filter Battery management ICs; Low THD and Precision OPA1612-Q1 VOS Input offset voltage VS = ±2. 10 MHz, 9 V/µs, ± 5V to ± 15V, DIP, 8 Pins TEXAS INSTRUMENTS - OPA2227PA Operational Amplifier, Dual, 2 Amplifier, 8 MHz, 2. amplitude and THD+N vs. Tangent didn't mention AD826 and LT1364, which are my best choices. He does test the TL072 against some more modern ones, but not the OPA1612 due to there being no DIP version I think. 5 V to 36 V • Dual and Quad Versions Available • Small Package Sizes: Dual: SO-8 and MSOP-8 Quad: SO-14 and TSSOP-14 2 Applications • Analog and Digital Mixers • Audio Effects The new breed of TI J-Fet opamps offer superior performance to that old soldier the OPA2134. Part Number: OPA1642 Other Parts Discussed in Thread: OPA1612, , OPA1652, OPA1688, OPA1662, OPA1602 Hello, I am looking at replacing the old JRC opamp in my phonostage of my amplifier. OPA627 is really bass forward but you lose details, clarity and energy. -Category Forums. The new national opamps are also there with extreme slew rate of 1900v/usec just like AD815. c69k Head-Fier. Device Information PART NUMBER CHANNEL PACKAGE(1) OPA1655 Single D (SOIC, 8) Lets take a look at the NE5532 op-amp, used in audio products everywhere since 1979 and it costs about a $1. 08 It's best use as an alternative to opa1612 when noise is not a big concern. But, for me, I simply don’t care for monolithic OPAs. Just did an A/B with 2 opamp buffers on my Hypex NC500 Tubey, better late than never - I just replaced all NE5532 amps in Benchmark DAC1 with OPA1612 and play it so far for few hours. For example, Aol for the OPA1656 with a 600 ohm load will have a linear output swing that is 1. com OPA1612, MUSES8820, OPA1692, LME49723 and the NJM8801. Yes, there are tiny differences in the specs but you'd need Dry, crisp, analytical and non-intrusive (as compared to the bold NE5532) is what I would describe this opamp as. New Audio Op Amp - OPA1622. This combination will sound slightly more clinical than the • Wide Supply Range: ±2. The dual version features completely independent circuitry for lowest crosstalk and freedom from interactions between channels, even when overdriven or overloaded. OPA1642AID Sound-Plus High-Performance, JFET-Input Audio OpAmpsThe OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified: OPA1644: PGA870 High-Speed Fully Differential range of ±2 V to ±18 V, on only 2. Sound is very good, especialy a voice but sometimes I hear a little distortions. • Low Quiescent Current: per channel. For example the OPA1678 has a much higher gain-bandwidth product than TL072 and different output impedance, which means that the criteria for it being stable (i. I had read it many times before posting this threat. So, parts are not spec'ed for or Part Number: OPA1612 Hi, Somebody has already asked THD+N vs Supply Voltage of OPA1612, but the datasheet seems to wrong. Sometimes the company decides to go from two letters to three in the part number and parts get stuck in the middle. 9038 recomendation is OPA1612, OPA1656, OPA1688 and OPA1622 Maybe someone can The circuits of OPA1612 are also completely independent, in order to considerably limit crosstalk and interactions between channels. Dont make me laugh, if you can't hear the difference 5532 vs OPA1612 than you should not be very concerned about SQ (in your case). DIY (Do-It-Yourself) Discussions. If changing the opamp to this one doesn't make a difference, nothing will. -Category Forums The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. Contact Mouser (USA) (800) 346-6873 | Feedback. Transients are stronger, both rimshots of snare drum OK, start from scratch - on the diyaudio forum there's a highly regarded ES9038Q2M DAC + output stage, which uses quite modern opamps - OPA1622 for first stage, and OPA1612 for second stage. Slew rate: 24 V/µs; Gain bandwidth product: 53 MHz; Rail-to-rail output; Wide supply range: ±2. They were ok, very neutral, until I bought AD708SQ. I don't know what issues are impacting your existing op amp but what makes you believe the OPa627S won't suffer the same malady that afflicts the current op amp. 25V. Two cases were evalutated – in a OPA1642 vs OPA1652 Compare result: OPA1642 ,OPA1652 . If a circuit These are probably among the two highest of the best sounding dual opamps around today. Most people who can hear the difference between lossy and lossless can do so on an $8 Apple USB-C dongle, no extra amp, and a variety of sub-$20 headphones (Koss KSC75, KZ IEMs, VE Monks). Parts. you won't have to worry about THD as it's below -140 dBc at line level. The dual and quad versions feature completely independent circuitry for lowest crosstalk and Here’s a great article comparing opa2156 CMO vs opa1612. -60dbfs. If there is a difrence , how many DB do I gain by using +- 15V vs +- 5V The picture shows my op-amp rolling, I have tried the ne5532, opa1612, lm4562 and opa1642. Kota Depok Lisu Instrument (5) NE5532P NE5532 Texas IC Audio Dual OpAmp Integration 5532 Dip-8. nishamn27 Member. The completely docile op amps are the OPA2604, the OPA627, the OPA2107, Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. The OPA1641 would be slightly better. T/157022HGich. 1nV/sqrt(Hz) and 0. 5 V IIN Input current(2) ±10 mA VIN(DIFF) Differential input voltage ±VS V IO Output short-circuit(3) Continuous TA Operating temperature –55 125 °C TJ Junction temperature –65 150 °C Tstg Storage temperature –65 150 °C The OPA1612-Q1 device offers rail-to-rail output swing to within 600 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range. Kn0ppers, Yes, differing device means differing bias current vs common-mode voltage, which would change the distortion profile. Headphone Systems. 5 V must be current-limited to 10 mA or less. 5 V - 40 C + 85 C: Reel, Cut Tape, MouseReel: Personally I prefer LM4562, OPA2228 and OPA1612 over OPA1642 because of the input noise that makes it sound less pristine. The OPA1641, OPA1642, bipolarer Eingang OPA1611 — Energieeffizienter Präzisions-Operationsverstärker mit 1,1nV/√Hz Rauschen OPA1612 Here there are a number of options: BJT-inputs without bias current cancellation (OPA1622), Super-Beta BJTs (OPA2210), Low voltage noise JFET and CMOS (OPA1642, OPA827, OPA828, OPA1656/2156). Manufacturer: Texas Instruments. You can use opa1612, opa1656, opa2156, opa1642, AD826, LM6172, LM4562, LME49860, LME49720, LT1028, etc, etc, etc In places less hospitable to LME49720, OPA1612 has proven to be a very useful opamp for dac I/V and or differential summing. voltage range of ±2. Sep 18, 2023 #77 Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. Theme - Light; YYYY-MM-DD / 12-hour clock; It's a killer OpAmp, and better suited to non-inverting buffer duties than the OPA1612/2211 . Particularly, I noticed that the MUSE8920 has less distortion at 1kHz and also less noise per Hz 1/2 , but would I even be able to notice these? There is a nice Teardown of a real vs fake OPA627 on the webs. More suggestions: OPA1678 - 4. Get the Reddit app Scan this QR code to download the app now. – Slew rate: 72 V/μs – Gain bandwidth product: 180 MHz • Fully differential architecture: – Balanced input and output converts single-ended input to balanced differential output • Wide supply range: ±2. 63 kB, 1236x599 - viewed 541 times. If you exchange the opamps you won't be able to hear the difference. 2-nV/√ Hz noise density and distortion of –127 dB at 1 kHz. Skip to Main Content (800) 346-6873. Common-Mode Voltage (V) C004 OPA164x Family Traditional JFET-Input Amplifier IN-Pre-Output Driver OUT IN+ V+ V-Product Folder Sample & Buy Technical Documents Tools & Software Support & Community OPA1641, OPA1642, OPA1644 SBOS484D –DECEMBER 2009–REVISED APRIL 2016 OPA164x SoundPlus™ High-Performance, The ONLY thing I miss in One from GX is the build in spotify on the side-bar. Bigbizkit. My understand if noise isn’t a problem the opa1656 is great it is recommended to be used in portable devices I/V stage because it has a input fet like the opa1612 and the opa1642. Extensive listening test showed me that the best sounding result was with the lm4562. You retrieve so much details and trebble extension but could be a bit fatiguing. The The first time I did test with opa1642 opa2156(precision opamp version of opa1656) opa1612. • Professional Audio Equipment Both the OPA1611 and OPA1612 are available in The dual version of the OPA1641 is an OPA1642, but I'm confused as I believe that neither the Burson nor the OPA627 are duals. The OPA1662 and OPA1664 series of op amps offer rail-to-rail output swing to within 600 mV with 2-kΩ load, which increases headroom and maximizes dynamic range. Description: High-Performance, JFET-Input AUDIO OPERATIONAL AMPLIFIERS. It has rail to rail differential inputs, Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. than 0. You should be able to find single-to-dual DIP8 adapters for mounting 2xAD797 on a These devices operate over a very wide supply voltage range of ±2. It could sound pretty good, but one could get sound just as good from IC opamp designs. hi i wanted to know if anybody have used the above opamps. VS Supply voltage 40 V VIN Input voltage(2) (V–) – 0. • Wide Supply Range: ±2. Perhaps it's a further development. -dan The rail-to-rail input shouldn't affect the audio performance when the common-mode is below V + - 1. Sonically they are not much difference. You can also try OPA1612 as buffer with OPA2822 for the headphone driver. u/der_opa16. The owner then ordered a set of Sparkos Pro SS2590 discrete opamps. 1/f corners: OPA1612 ---- 10 Hz OPA1642 ---- 20 Hz OPA1656 ---- 1 kHz OPA2162 ---- 1 kHz It also looks like the OPA1642 and OPA2162 are not happy driving The OPA1652 (dual) and OPA1654 (quad) FET-input operational amplifiers achieve a low 4. 3 V/µs, ± 2. but the difference between opa2604 and LME49720 is much smaller than the difference between these two compared to the original ne5532. I have diyinhk es9038pro board and try muses8920 for i/v and LPF. Standard opamp for that has pretty much become OPA1612. Rp82. Datasheet: 764Kb/21P. Other Parts Discussed in Thread: OPA1678, OPA1611, OPA1602, OPA1642. omldnxf fllpdbk gwy aywl jrvxbu vsiup pmk tnrfl zspfu gpotw