Opa1656 vs lm4562 reddit. 5V to ±17V. May 19, 2017 · OPA1656 24v/uSec slew rate; LME49720 (same as LM4562) 20v/uSec slew rate: 1656 is a LITTLE bit faster. 000. To check if they will match the previous ones that were made with balanced 10x paralleled op-amps. 2uS to 0. Eric Mo Intellectual 775 points Part Number: OPA2134 Other Parts Discussed in Thread: OPA1656, OPA134. The LM4562 is unity gain stable. I think I used TL072 in my KOT clone. opa1655 , opa1656 SBOS901C – MARCH 2019 – REVISED SEPTEMBER 2022 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, May 19, 2017 · Compare using a fet opamp, opa1656 vs a opa2134, I see little reason why one would choose a opa2134 for a new design, maybe that's why TI asks so much because they want you to use the new tech, but it's probably the cost of the mfg process for that tech vs the new processes. Tested a lot of OP, including LME49720, OPA1612, OPA1642, MUSES8920 and MUSES8820. May 23, 2018 · The second time I did test with opa1656 and opa1612. LM is the best overall, it sounds the most balanced, very natural/smooth/clean, doesnt exaggerate anything but can sound lacking in impact. The LM4562 A07 does work really well if you feed it with a good preamp like the Aiyima T6 Pro which also is flexible when it comes to op amps. Except opa1656 rest of opamps are available on rsdelivers. You have to try it yourself to hear the difference, because the measurement advantage is very small, so it should be non-audible , but it is not. You see the opa2604 has quite a thick sound, easy to listen to, not bright or analytical in any way and the LM4562 leans in the opposite direction, not too much mind but enough to liven up the opa2604 and put some sparkle in there while the opa2064 beefs up the low end of the LM4562 quite nicely and the end result is a fuller rich and detailed I find the A07 to be adequate in it's stock form but mine really improved when I swapped the NE5532 OpAmps for the LM4562. Main caps are already real Nichicons and other components can't be easily replaced. May 9, 2023 · Hello together, i want to put one of the mentioned OP Amps in my amp. In 2022 one would suggest OPA1642 and OPA1656 methinks. Jan 19, 2023 · The LM4562 is an excellent op amp for audio applications and is one of the more reasonably priced. The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. Both with lm4562. So put 10 x OPA1656 in a bag to send costs 16,76 $ , to put 10 x OPA627 in a bag to send costs 130 $ . Question is OPA1612 or even better if you can NJM8830. 8nV/rtHz). The schematic, spectrum and results are given below. Are you just interested in trying something different? Reactions: 1 user Feb 11, 2021 · Below is a comparison between OPA1656 and OPA1642. 000196% I recently learned that an OP-AMP called OPA837 was released. To help others to understand what other audio components are being used, a SML SU-6 and SH-6 are used. Or some other op amp, because their IC socket supports op amp rolling and you can order it with a different op amp if you prefer. Mar 17, 2019 · I wasn't complaining about the OPA1611 , just as an example of bipolar NPN input opamps , like the OPA1622 , or AD797, NE5532, OPA1692, Anyone know whether the LM4562-LME49710-LME49860 series are PNP input or NPN . OPA1656 1/2 OPA1656 Input Output Pad Product Folder Order Now Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. The sound difference after using NE5532P to this LM4562 is somehow so much different. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety Mar 17, 2019 · The OPA1641 would be slightly better. 144dBc=0. ••• The combination of OPA1656 as U1 and LM4562 as U2 gave the lowest measured noise, but there was a negligible audible difference when the LM4562 was replaced by a NE5532. The circuit with the values shown in the linked article (but without the High and Low resistors and without the 1K input resistor): I may try to find a pair of OPA1656. 5 metre cable at 33. To my ear that upgrade took the device from being good for the price to just plain good. The completely docile op amps are the OPA2604, the OPA627, the OPA2107, the LM4562/LME49720 and the OPA2134. The cost is about $30 in a local store. I had no oscillations or instability with the OPA1656. Jul 30, 2021 · If I could also request test of: OPA1642 ~ 2 Euro OPA1656 ~ 2. Apr 16, 2011 · I recently did a series of mods to my diy Gigawork big dac and they all improved the sonics. 7nV/rtHz @ 1kHz vs 4. common mode voltage that I've measured on any op amp. Jul 4, 2009 · - highs (over 10-12khz or so) not as "sparkling" as with opa1656 (but at the same time more sibilant, not overly sibilant but with the opa1656 sibilant nearly "vanishes" while the opa627 brings them a bit up again, it doesnt "shoot" sibilance in your face, its just a bit more audible) Mar 17, 2019 · OPA1656 is less noisy than the OPA827, 2. Aiyima have confirmed they are the same analog linear potentiometer as the V3 but the sensitivity of the A07 MAX is twice that of V3, so while the A07MAX volume is nicer than previous Aiyima Amps but IMO the volume on the V3 is slightly nicer and it is very subtle with lower Mar 17, 2019 · I measured again the noise of OPA1656 vs OPA1642. Jun 29, 2021 · これが使えるならば、さらにデータ上は上位のths4651がいけるのでは？と思い、交換してみたところバッチリでした。解像度、空気感、柔らかさがmuses01、lme49990よりも良く、好みの音です。opa1656が最新でスペックの高さが評判でしたので、最初は期待し Mar 17, 2019 · That's interesting, because in my little opamps rolling experiment it did not do very well. Two identical gain 11 amplifiers were tested. LM4562-+ LM4562 10pF + + INPUT OUTPUT 47 k : 150 : 3320: 909 : 26. Feb 11, 2021 · Even AD797 or OP627 cant hold a candle vs OPA1612 in terms of SQ - the difference is HUGE! My preamp sounds best with OPA1612 for gain and OPA2192 as buffer. Also comparisons of the OPA627 and OPA637 would be good. The bass was less muddy and overbearing while the midrange and treble clarity improved greatly. consists of 2 x 10 op-amps in parallel and the two 10s are balance connected. Digikey seems to have the OPA1656 (for a bit over €2 each, which is great, though shipping might be quite a bit more than that), unfortunately they only seem to have it with SOIC mount and not DIP. Jul 11, 2022 · Found a few interesting opamps on TI website: OPA1612 - bipolar input transistors, 0. Use a socket and try a few out. The FET-input architecture achieves a low 2. It occurred to me that a more modern & higher performing part must exist at a lower price - a win-win scenario if ever there was one. Feb 10, 2020 · And I've tried many Opamps as well: the stock 5532, some directly purchased from TI 5532P and 5532AP, LME47920, LM4562 and finally some OPA1656 and OPA1612 on adapters. Every amp. Thanks in Jan 7, 2021 · I have ordered Mean Well RS-100-24 SMPS power supply, 24V/4. 5 Euro OP275 ~ 3 Euro OPA1612 ~ 6 Euro According to specs I would think the OPA1642 would be one of the best compromises cost vs performance wise. Load was 1k but I'm planning on changing that to something easier like 2k and retesting NE5532 just for fun. 5 MHz LM4562, 55 MHz OPA2134, 8 MHz A 1 metre cable with polyethylene dielectric has its first resonance at 50 MHz, a 1. Nov 25, 2015 · Ive compared the NE5532, NJM4556 and LM4562 so far. I will measure the A07 output power and spectrum cleanliness with this power supply. The final mod was to swap NE5532 for LM4562 and this turns out to be the icing on the cake. It's a killer OpAmp, and better suited to non-inverting buffer duties than the OPA1612/2211 Aug 26, 2020 · I have two of a04. 3nV/rtHz @ 1kHz). Op amps are super cheap. The OPA1656 immediately raised my attention, plus there was/is a long thread about it on diyaudio. LM4562 can drive 600 ohm or lower very well but are not particularly low noise device Aug 22, 2007 · Before I got an AP I used a Boonton 1120 -- same story -- the NE5534 in the oscillator couldn't be beat. Hi Team, My customer wants to Apr 6, 2020 · They are not bad opamps at all. I use meanwell power supply 30 V, 6 A for my a04. That said, a few people consder the OPA637 an 'upgrade' from the AD8620. 01%, 10V step vs 1. I used 10 or 12 in my preamp rolling project - never a problem with The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. 7 nF//500 pF 47 nF//33 nF LM4562 www. Choosing between the LM4562 and NE5532 depends on your specific application requirements and priorities. I don't care about listening tests or something else, just want to use the technical better one in my amp. But the only REAL advantage of an FET 1656 over the bipolar 4562 is much less CURRENT noise---so any application with a source impedance of ≥3KΩ will have lower noise with the 1656. OPA1655 THD=-114. Jun 19, 2021 · The latest op-amp that I am still using until now is LM4562. The OPA1656 has lower typical settling time than the LM4562 (800nS to 0. OPA1656 Apr 10, 2019 · TI recently introduced two devices worth looking into, updated BUF634A and OPA1656, both available as prototypes directly from TI. Not targeting Mouser here , most of the others are worse. 5mV). Oct 8, 2023 · The advantages of the V3 compared to the MAX: 1. Having LM4562 in both amplifiers and they start to sound the same. ••• May 15, 2022 · Buggle2 Riaa board. 1 k : 3. no mincing words, there was an immediate improvement in all respects - dynamics, soundstaging, bass, detail, transparency. You're better off getting a higher end amp at that point. I listened to OPA2134, LM4562, and NE5532, and OPA2134 sounded the best. The knee in the OPA1656 noise curve is higher because the broadband noise of the OPA1656 is lower (2. ••• Jul 3, 2019 · If you find a review, it could be for an OP275 buffer (they changed the build spec to LM4562 just 2 days ago). 1mV vs +/- 0. 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 OPA1652 and OPA1688) hunting for sources of input capacitance variation. The opa1656 this time is smoother than the opa2156 in previous test and opa1612 has better bass than previous. 83 k : 100 : 150 : 22 nF//4. ••• Dec 6, 2018 · This question is triggered by a repair I recently did where the originals, while still available, were stupid expensive. ti. I can't say for sure. 1F X7R on the backside with the shortest possible lead length. My first set of separate OpAmps, ushering my foray into the brave new world of OpAmmetryLoL Dry, crisp, analytical and non-intrusive (as compared to the bold NE5532) is what I would describe this opamp as. OPA1656 sounded worst, Muses 8920 sounded best. Review. The low voltage noise combined with the low current noise make this device great for low and high impedance applications such as a high gain microphone pre-amplifier. Jun 8, 2023 · The OPA1656/1655 released after the OPA828 are also excellent enough to dispel the image of past CMOS input. I have tried muse02, muse 8920 didnt feel they were worth the hype or price. The price for the new LM4562 also dropped significantly at the beginning of 2019. . 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety Aug 28, 2023 · 2. 5A. The LM4562 has a wide supply range of ±2. Oct 10, 2020 · Aiyima a04 with LM4562 is more dynamic, goes deeper in the bass and sound clearer. Feb 29, 2008 · I've read about the 'Sondigo vs. Mar 17, 2019 · So to put 1 in a baggie exactly like the OPA1656 , they charge 15,69 $ !! , to put 10 in a baggie : 130 $ !!! TI does all the work and Mouser leaches more profit off from it. strangely its probably the most boring sounding one when paired with 400i but the best sounding with hd600 一个意外的结果是、ne5532在第一级中的使用有多安静、在第一级中肯定比 lm4562安静得多。 这可能是由于与 lm4562相比、ne5532中的电流噪声明显降低。 opa1656作为 u1、 lm4562作为 u2的组合提供 了最低的测量噪声、但当 lm4562替换为 ne5532时、可闻差异可以忽略不计。 Sep 14, 2021 · The LM4562 is an exception, but otherwise it are the fast op-amps that JRA has trouble with: Misbehaving: OPA1656, gain-bandwidth product 53 MHz LME49990, 110 MHz OPA1612, 40 MHz Behaving well: OPA2604, 20 MHz OPA627, 16 MHz OPA2107, 4. Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. X-fi Prelude' comparison a few threads down and I basically concluded from that the AD8620 might be considered better than the default LM4562. com with a TI insider involved. 9nV/rtHz vs. It really depends how much work is involved. Mar 17, 2019 · The OPA1641 would be slightly better. Probably the circuit is better than the first one or something went wrong or I was just imaging all of those. PRODUCTION DATA. In that case, for example, the Sparkos SS3602 sounded very sharp, the OPA1612 oscillated like crazy, and the OPA2604 and TL072 were very dark sounding. Minor improvement to SNR, cleaner highs according to some. And this preamp sounds MUCH better than Audio Research, Burmester and Accuphase preamps costing above €10. For me NJM8830 is better, it can really only compete with LT1028. Feb 4, 2014 · Avoid LM4562/LME49720 and OPA2134/2604 if you do not want to re-engineering circuitry to make it stable. I didn't investigate further, and I didn't have the OPA1656 nor the 1642 to try. Help! Feb 20, 2021 · The BJT input LM4562 has lower typical input voltage noise (2. How to choose between lm4562 vs ne5532. 4nV/rtHz both flat. #1 Choose the LM4562 (LM4562 vs NE5532): High-End Audio Quality: If your application demands the highest audio quality, low distortion, and minimal noise interference, the LM4562 is a better choice Nov 30, 2021 · OPA2134: OPA2134 VS OPA1656. 00003 THD, Voffset = 1mV - I'm thinking to use this one for servo. (or the 2156) The opamp has good phase margin and seems quite tolerant of sub-optimal layout. The successor process, which is on 300 mm, was not ready at the time I was working on OPA1656. 9nV/rtHz as opposed to 3. Sep 14, 2021 · Of the op amps in my collection the massive misbehavers are the OPA1656, the LME49990 and the OPA1612. For example, at 10Hz both parts are approximately 35nV/rtHz. Regardless, OPA1656 is on a fairly mature process that has been around for over a decade. Mar 17, 2019 · OPA1656 rolling I tried in all cases to bypass the rails with a 0. It has the most stable input capacitance vs. My OP1656 OpAmp Review. Wow moment. MUSES8820 is the best, IMHO. com and all are unity gain stable. Some say it is the same as LME49720, but anyway this LM4562 is lot cheaper. Those are fine. Feb 4, 2014 · The thread was started in 2014. May 19, 2017 · An OPA1612 has slightly better specs than an LM4562---less noise and distortion, faster, and more output voltage swing. Volume control on the V3 is more subtle control over lower volumes. I'm still waiting for OPA1656 in the mail. IMO, use with the stock 32V/5A adapter and replace the Opamps, but don't go linear. 3 MHz. IMHO the outcome was mostly decided by how the opamps responded to the RF coming out of the dac chip. May 13, 2015 · NE5532 is dual channel opamp, so you can try few of these: opa2134, LM4562, opa1642, opa1656 without burning too much money on rolling opmaps. New BUF634A has higher slew rate, wider BW and decreased quiescent current in wide-BW mode, and is cheaper than original 634 Mar 17, 2019 · If you pick a point on the 1/f portion of the noise spectral density curve you can see that the two parts are essentially identical. Which chip should I pick for Aiyima A07? Is the LM4562 OP Chip worth the extra $$ ? Should I ignore it and take the 4th option? Setting this amp for KEF Q350 with SMSL SU-6 DAC. LM4562 op amps. I cannot recommend a 48V power supply because of the A07 internal temperature with the 48V PSU, in case I The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. Any way, it is also Feb 11, 2021 · Not all analog processes have moved to 300mm (12 inch) wafers. Is the difference in imaging clearly noticeable or just very subtle? Aug 22, 2007 · What was omitted from the LM4562/LME49720 history is that the part was cancelled, because the 6" wafer line it was sourced from went way, and then resurrected on a new 8" wafer line. I'd be curious if the new-er opa1656 doesn't beat the NE5534 in almost every one its edge cases (namely, it's rather nice output stage) -- the low distortion oscillator thread makes a case Mar 17, 2019 · We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). Not bad for a $4 part. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety Dec 11, 2019 · Normally you'd regularily search in the manufacturers new product listings first for any new interesting products. Each part has its specific specs tailored for the application. My guess is that you won’t notice a difference. 1%, 10V step). Very nice presentation in the link! Thank you. $10 so no downside. Over this supply range the LM4562’s input circuitry maintains excellent common-mode and power supply rejection, as well as maintaining its low input bias current. They are "better' ones you can try - LM4562 is always a good candidate just check the supply voltage fist. Texas instruments have done a really good job with the tpa serie. I tested a few in both units and the best combination to my ears at least is the opa2604 in the output stage of the T6 Pro and the LM4562 in the A07. com SNAS326K –AUGUST 2006–REVISED DECEMBER 2013 LM4562 Dual High-Performance, High-Fidelity Audio Operational Amplifier Check for Samples: LM4562 1FEATURES DESCRIPTION The LM4562 is part of the ultra Aug 1, 2024 · And when I was making a Whammy headamp, I got by far the best sound with the Muses 02. I have compared with much more expensive amplifiers and my a04 is sounding better. Even the tpa 3116/3118 is really good. Especially on the sound-stage and overall music presentation is more forward with this LM4562. The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. It offers exceptional performance in almost any audio application. I can't really hear difference this time. Opamps LM4562 vs LM4562na Hi there, Im currently fiddling with a pair of Aiyima A07 max amplifiers implemented as mini mono blocks and I'm curious play with different op ampsI've read that the LM4562 is a good option to start with. Maratnz likes to drive 5532s with the full swing of +/-22V which is too much for most of the stock replacements. Thanks! Most of these opamps don't seem easy to find in Europe (at least not on my usual electronics suppliers). You are right, OPA1656 is interesting part, but as anything in engineering field it depends on user case and circuit environment. 000015% THD, even lower than LM4562 OPA1656 - FET input transistors, 0. The LM4562 has lower typical input offset voltage than the OPA1656 (+/- 0. Two schematics in parallel and eight in parallel for both 1656 and 1642 were measured. huva chmlr jmidz kzfka nwyb titop zladn xfx ljfkhtq wmrrzi