Opa1656 vs lm4562 forum. Sep 26, 2019 · 1 - About replace the the op amp chip: i have a Sanskrit 6th gen, modded with a D8066AR for buffer and 2 x 2 LM4562 for output. hence, once you have a LM4562/LME49720 or a OPA1612 I would not worry, the Oct 10, 2020 · Aiyima a04 with LM4562 is more dynamic, goes deeper in the bass and sound clearer. common mode voltage that I've measured on any op amp. The low offset would make the reduction in swing before clipping at the output of the second stage due to the DC gain of about 1000 for MC essentially Given these characteristics, there is a solid use case for my bedtime music sound profile (which can take quite few hours of listening each night)! 1656 is in my newly designated relaxation & sleeping tube preamp which I can just swap in anytime. 1) Can I replace the LME49710 / LM4562 referred to in the report with the OPA1656 without changing any of the values in the circuit design in 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. Though I use it only occasionally mostly for tests, and it has not operated more than a couple of hours summed, the right channel started to emit high frequency hiss noise time after time, without any special reason, even if nothing is connected to the input. Aug 22, 2007 · Before I got an AP I used a Boonton 1120 -- same story -- the NE5534 in the oscillator couldn't be beat. 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. Are there any other 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. Talking about AIYIMA A07, it will end up in a dustbin soon. 1mV vs +/- 0. The OPA1656 has lower typical settling time than the LM4562 (800nS to 0. They are "better' ones you can try - LM4562 is always a good candidate just check the supply voltage fist. This is just a theory. The price for the new LM4562 also dropped significantly at the beginning of 2019. I use meanwell power supply 30 V, 6 A for my a04. I have compared with much more expensive amplifiers and my a04 is sounding better. 5 MHz LM4562, 55 MHz OPA2134, 8 MHz A 1 metre cable with polyethylene dielectric has its first resonance at 50 MHz, a 1. The data clearly indicates that the NCx500 exhibits optimal performance when paired with the Sonic Imagery 994 or OPA1656, whereas its integration with the LM4562 resulted in a bit worse measurements. I have tried muse02, muse 8920 didnt feel they were worth the hype or price. . Two identical gain 11 amplifiers were tested. the ne5532 looks a bit harder, narrower and more direct, the other two a bit more relaxed and 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. It's a killer OpAmp, and better suited to I read on several forum the advantage to use specific AOP for the final stage of DAC or Amplifier. 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, The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. Jan 7, 2021 · I have ordered Mean Well RS-100-24 SMPS power supply, 24V/4. I suggest the following reference - 994Enh Discret OpAmp SONIC IMAGERY LABS - SPARKOS LABS SS3606 - AOP 1612 - LM4562 Nov 25, 2015 · Ive compared the NE5532, NJM4556 and LM4562 so far. Having LM4562 in both amplifiers and they start to sound the same. LM is the best overall, it sounds the most balanced, very natural/smooth/clean, doesnt exaggerate anything but can sound lacking in impact. 3 MHz. 7 nF//500 pF 47 nF//33 nF LM4562 www. 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 · We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). I am using a old MUSE EX2 pushing a Energy C-3, and my music source is Tidal. Joined Feb 24, 2016 Messages 10,260 Likes 16,337 Location uk, taunton. 3nV/rtHz @ 1kHz). 5mV). 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. The LM4562 has lower typical input offset voltage than the OPA1656 (+/- 0. May 19, 2017 · maybe modern production 3886 are all above average? the designs seem to take the 'typical' GBW spec as the effective minimum My guesstimate puts the safe with production variation margin local closed loop gain corner as low as 100kHz for LM3886 with a greater than 4:1 range designing for stable extra loop gain from the nice input op amp really doesn't give much 20 kHz added safe composite loop The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. Mar 17, 2019 · The OPA1641 would be slightly better. And this preamp sounds MUCH better than Audio Research, Burmester and Accuphase preamps costing above €10. The output swing for Aol should be considered as it is different between the two devices. Mar 21, 2023 · The trade off would be noise vs stability. 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。 Jul 3, 2019 · Forum Donor. Tested a lot of OP, including LME49720, OPA1612, OPA1642, MUSES8920 and MUSES8820. Those are fine. In 2022 one would suggest OPA1642 and OPA1656 methinks. Mar 17, 2019 · blue spectrum - 2 x 8 parallel OPA1642 , green spectrum - 2 x 2 parallel OPA1642 orange spectrum - 2 x 8 parallel OPA1656 , brown spectrum - 2 x 2 parallel OPA1656 Based on these measurements I expect the noise of a single OPA1656 to be 39nV/rtHz at 10Hz. Nothing really magic about the sound or performance of the V3, but it is a good inexpensive class D amp particularly good for lower volumes and where the small form factor works. 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 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. In the meantime we will wait for the customers feedback on the component values in order to check the stability of each op amp below using the OPA1656. Mar 17, 2019 · For a DAC chip with a low output current, I would suggest op amps with FET type inputs, either JFETs or CMOS. Dec 10, 2021 · This is my first time doing anything DIY with audio. Best Regards, Chris Featherstone LM4562-+ LM4562 10pF + + INPUT OUTPUT 47 k : 150 : 3320: 909 : 26. So, how it will influence replacing the amp chip for a OPA1656? Because the Aiyima 04 is coming with the LM4562 now. May 7, 2018 · 2. I didn't investigate further, and I didn't have the OPA1656 nor the 1642 to try. consists of 2 x 10 op-amps in parallel and the two 10s are balance connected. X-fi Prelude' comparison a few threads down and I basically concluded from that the AD8620 might be considered better than the default 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 $ . Dual customzied solution will give unmeasurable distortion (possibly -180db). 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. The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. Here are the measurements of the dual mono and with different op amps (Sonic Imagery 994, OPA1656, LM4562). To help others to understand what other audio components are being used, a SML SU-6 and SH-6 are used. The diyaudio forum might be better suited for posing the question. Even the tpa 3116/3118 is really good. The OPA1220 would be quieter than either of them for MC, still not quiet though, and would definitely be better than the LM4562 for MM. strangely its probably the most boring sounding one when paired with 400i but the best sounding with hd600 Nov 30, 2021 · Stability should be considered especially with the wider bandwidth of the OPA1656. Each part has its specific specs tailored for the application. 5A. Question is OPA1612 or even better if you can NJM8830. OPA1622 was targeted specifically for headphone applications, while OPA1656 is a more general purpose device meant to address analog signal processing in line level audio circuits. MUSES8820 is the best, IMHO. May 23, 2018 · Opa1656 and opa1612 without tweaking have better performance than almost any discrete solution. the differences aren't huge, but big enough to make a change worthwhile. Aug 20, 2023 · The ones I subbed were LM4562's, which work fine with the Aiyimas. Thanks in Sep 14, 2021 · Of the op amps in my collection the massive misbehavers are the OPA1656, the LME49990 and the OPA1612. The FET-input architecture achieves a low 2. 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. Aug 1, 2024 · And when I was making a Whammy headamp, I got by far the best sound with the Muses 02. 83 k : 100 : 150 : 22 nF//4. Aug 26, 2020 · I have two of a04. I’m going to solder the IC to a soic to dip adapter then plug it into the the amp. Below, I have highlighted the components that could be adjusted if this the issue. Several reference are used on forum. ti. Probably the circuit is better than the first one or something went wrong or I was just imaging all of those. Nov 8, 2022 · The OPA1656 noise for MM would likely be a bit better. I am planning to replace the NE5532 in my Burson Funk with the OPA1656. 5V to ±17V. but the difference between opa2604 and LME49720 is much smaller than the difference between these two compared to the original ne5532. Tried the LM 4562NA OP amps vs the original 5532. But no perceptible sound difference from the stock 5532's. You are right, OPA1656 is interesting part, but as anything in engineering field it depends on user case and circuit environment. May 15, 2022 · Buggle2 Riaa board. I can't really hear difference this time. It has the most stable input capacitance vs. Is the OPA1656 the correct opamp to use? I heard it was the best so that’s why I picked it. 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. Both with lm4562. That said, a few people consder the OPA637 an 'upgrade' from the AD8620. I had no oscillations or instability with the OPA1656. Every amp. Wider sound stage with original 5532 and a little more firm bass from the subwoofer. I used 10 or 12 in my preamp rolling project - never a problem with 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. It is sooo tooo solid Jan 27, 2024 · The advantage of OPA1656 is that it has JFET inputs rather than bipolar, so its input bias current is much lower, making it easier to keep the output DC offset low in some applications. Mar 22, 2022 · These are probably among the two highest of the best sounding dual opamps around today. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety May 9, 2023 · Hello together, i want to put one of the mentioned OP Amps in my amp. (or the 2156) The opamp has good phase margin and seems quite tolerant of sub-optimal layout. For example, Aol for the OPA1656 with a 600 ohm load will have a linear output swing that is 1. Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. It offers exceptional performance in almost any audio application. 2uS to 0. On the α24, this is a non-issue. Any way, it is also 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 rolling I tried in all cases to bypass the rails with a 0. For the case of The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. Since I am not interested in the V6 Vivid Dual that it comes with. For the case of Nov 26, 2017 · thanks for your tips! i have tested the opa2604 and the LME49720 compared to the ne5532. I cannot recommend a 48V power supply because of the A07 internal temperature with the 48V PSU, in case I 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. Texas instruments have done a really good job with the tpa serie. The completely docile op amps are the OPA2604, the OPA627, the OPA2107, the LM4562/LME49720 and the OPA2134. OPA1656 sounded worst, Muses 8920 sounded best. com and all are unity gain stable. ••• Dec 11, 2019 · Normally you'd regularily search in the manufacturers new product listings first for any new interesting products. Maratnz likes to drive 5532s with the full swing of +/-22V which is too much for most of the stock replacements. It is important to use the OPA1656 in both the first and second stages. I can't say for sure. Jun 2, 2019 · Of course. Just did an A/B with 2 opamp buffers on my Hypex NC500 monoblocks, which I normally use with no buffer, as the dac has enough gain to drive the NC500 modules direct. The opa1656 this time is smoother than the opa2156 in previous test and opa1612 has better bass than previous. Any chance you have some measurements of the OPA1612 compared to the Sparkos SS2590 for the regular dual mono? I was also curious how many of the SS2590 opamps are Mar 17, 2019 · To start, OPA1656 is definitely not a replacement for OPA1622, the two parts were designed for with very different applications in mind. Apr 6, 2020 · They are not bad opamps at all. IMHO the outcome was mostly decided by how the opamps responded to the RF coming out of the dac chip. The LM4562 has a wide supply range of ±2. PRODUCTION DATA. It could be very interesting to test their performance: - SNR - Bandwish - slew rate-. Except opa1656 rest of opamps are available on rsdelivers. 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. OPA1656 Dec 6, 2018 · I don't think you can "get into it" here, it quickly degrades to psychoacoustics and audiophoolery compared to science. 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 . Using a bipolar opamp or a TL072 in the second stage would make the second stage noise dominant (even for a low noise bipolar like the LM4562, due to the current noise) Feb 11, 2021 · For a fun datasheet exercise compare the LM4562 and Ti OPA1611/1612 current noise versus the NE5534 and OPA228 current noise. Help! Feb 4, 2014 · Avoid LM4562/LME49720 and OPA2134/2604 if you do not want to re-engineering circuitry to make it stable. 01%, 10V step vs 1. Apr 10, 2019 · TI recently introduced two devices worth looking into, updated BUF634A and OPA1656, both available as prototypes directly from TI. The cost is about $30 in a local store. 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. The OPA1656 immediately raised my attention, plus there was/is a long thread about it on diyaudio. Feb 11, 2021 · Below is a comparison between OPA1656 and OPA1642. New BUF634A has higher slew rate, wider BW and decreased quiescent current in wide-BW mode, and is cheaper than original 634 Feb 20, 2021 · The BJT input LM4562 has lower typical input voltage noise (2. Dec 9, 2019 · Home: RME ADI-2 Pro FS R BE—Neumann KH80 DSP, Arendal Sound 1723 1S Work from Home: JDS Labs Atom—Etymotic ER4SR, AKG K371, Sennheiser HD820 Measurement: Earthworks M30 (Reed R8090)—Earthworks ZDT 1021 — RME ADI-2 Pro FS R BE — REW Jan 15, 2023 · Specifically, I've utilized three distinct op-amps: Sonic Imagery 994, OPA1656 and LM4562. Not targeting Mouser here , most of the others are worse. Mar 17, 2019 · We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). It really depends how much work is involved. Also comparisons of the OPA627 and OPA637 would be good. 5 metre cable at 33. Very nice presentation in the link! Thank you. Can I please ask two questions. 3V inside of each supply. 1F X7R on the backside with the shortest possible lead length. I will measure the A07 output power and spectrum cleanliness with this power supply. The only thing better with the LM4562 NA OP amps was that the voices had a little more three dimensional effect and the voice and music was pushed forward a bit towards the listening position. 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 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 Feb 4, 2014 · The thread was started in 2014. For me NJM8830 is better, it can really only compete with LT1028. 000. Low output current would mean the transimpedance gain of the I/V circuit will be high, and the input current noise of the op amp will be a significant contributor. The LM4562 is unity gain stable. com with a TI insider involved. 7nV/rtHz @ 1kHz vs 4. 1 k : 3. Aol 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. Part Number: OPA1656 Other Parts Discussed in Thread: LM4562, Hello, I am designing a phono pre-amp and found application report SNAA046A–July 2007–Revised May 2013. May 23, 2018 · The second time I did test with opa1656 and opa1612. You can dig on the Internet and find modern op-amp test results, but it quickly crosses over into sonic character and subjective opinion. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety Feb 29, 2008 · I've read about the 'Sondigo vs. 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. I don't care about listening tests or something else, just want to use the technical better one in my amp. 1%, 10V step). kwr jpm skynkc msazkk myneb oqhnnaw vqmwwm qzihx pqfu quv