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Opa1656 vs opa1612 vs opa16 forum

  1. Opa1656 vs opa1612 vs opa16 forum. Sep 14, 2021 · This leads me to believe there could be an issue caused by the back-to-back diodes across the inputs of bipolar (LME49990, OPA1612) and CMOS op amps (OPA1656). Are there any other Other Parts Discussed in Thread: OPA1612, OPA828. isn't really that expensive for opa1656 With that being said, there will not be a huge noise performance difference between OPA1656 (~4nV/rthz) vs OPA1678 (~5nV/rthz) when the thermal noise is already 11. Feb 11, 2021 · According to the TI datasheets OPA1612 has less noise than OPA1656. Jan 27, 2024 · The OPA1612 has lower noise and distortion than OPA1656. Dual customzied solution will give unmeasurable distortion (possibly -180db). May 9, 2023 · Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. 3V inside of each supply. The different players sounded different. But this is audio science forum. 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 · I purchased 10 OPA1656's. Welcome to r/guitar, a community devoted to the exchange of guitar related information. the ne5532 looks a bit harder, narrower and more direct, the other two a bit more relaxed and May 10, 2022 · You don't have to use SA, distortion level obvious on oscilloscope screen. Several reference are used on forum. 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, Dec 28, 2017 · There are some things to watch out for when swapping op amps. Hi Ervin, Yes those devices are very popular, unfortunately I don't have any way to know for sure when they are back in stock. But I would still like to see the OPA1656 tested. 8 bucks for a genuine part. Dec 9, 2019 · Technically speaking, it's really hard to beat opamps like AD797, AD8599, OPA1612, OPA1656, so it might be safer to use one of these over the "exotic" ones, unless swapping opamps is really fun for you and you have enough money to spend on this hobby. Sep 25, 2019 · The OPA165x operates over a very wide supply range of ±2. 25V to ±18V or (4. 5V to 36V) on 3. e. I had no oscillations or instability with the OPA1656. I suggest the following reference - 994Enh Discret OpAmp SONIC IMAGERY LABS - SPARKOS LABS SS3606 - AOP 1612 - LM4562 Mar 17, 2019 · We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). com SBOS450C –JULY 2009–REVISED AUGUST 2014 5 Pin Configuration and Functions D Package OPA1611, SOIC-8 D Package (Top View) OPA1612, SOIC-8 (Top View) DRG Package OPA1612, SON-8 (Top View) (1) NC denotes no internal connection. 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, Mar 17, 2019 · OPA1656 rolling I tried in all cases to bypass the rails with a 0. not going into high frequency oscillation) are different and just swapping ICs may cause problems -- you might need to add some compensation for the OPA1678, depending on Sep 6, 2023 · I was using opa1656 with fosi v3 ever since I got the uni. Transients are stronger, both rimshots of snare drum and big-band trumpets. It has a very good dynamic range and a low level of harmonic distortion. PRODUCTION DATA. com In no case did I have too high expectations regarding the sound Mar 17, 2019 · We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). My main attraction to them is a higher ripple current in the AC to “ power” the board onward as the opa1612 only requires low quiescent current of 3. From what I know the OPA1656 is currently the highest-spec audio grade standard opamp that TI offers. This feature accommodates the power supply constraints of many types of audio products. It appears that the OPA1611/2 have a lower noise voltage, wider bandwidth and higher slew rate than the OPA134 and OPA2134's. the differences aren't huge, but big enough to make a change worthwhile. ti. 4 nV/rthz. You can dig on the Internet and find modern op-amp test results, but it quickly crosses over into sonic character and subjective opinion. Since I am not interested in the V6 Vivid Dual that it comes with. Is the 2134 the right choice. Standard opamp for that has pretty much become OPA1612. Pin can be left floating or connected to any voltage between (V–) and (V+). I am planning to replace the NE5532 in my Burson Funk with the OPA1656. 10 kOhm - 10 MOhm Set 1 produces no visual deviation at all. I used 10 or 12 in my preamp rolling project - never a problem with Nov 26, 2017 · thanks for your tips! i have tested the opa2604 and the LME49720 compared to the ne5532. Nov 30, 2021 · Stability should be considered especially with the wider bandwidth of the OPA1656. He does test the TL072 against some more modern ones, but not the OPA1612 due to there being no DIP version I think. Lme49720 provides same best performance as opa1656 and opa1612. OPA1656 Mar 22, 2022 · OPA1612 (soic on dil adapter board), bi-polar from input to output, again a very good opamp, which to me "sounds more balanced" top to bottom than the LME, it is just as dynamic, but just a little less obvious in the bass leading edge because the mid-range seems a little more fleshed out rich and full bodied, highs are just as good as the LME. Transparency got way better. 9nV/rtHz broadband voltage noise. Close to zero DC mv at its output would enable removal of the dreaded electrolytic coupling caps which will definitely lower colouration and improve sound quality. He gives strong recommendations for some applications and also caveats about ill-informed op amp rolling. I looked at the Slew Rate as my main Dec 30, 2023 · Part Number: OPA1612 Other Parts Discussed in Thread: OPA1656 I'm up to, to design a 3rd or 4th order 20 Hz high pass filter with ultra low distortion. 5Vrms signal, 80-kHz measurement bandwidth. Compare the datasheets. OPA1612 is very . If a transient causes the op amp inputs to be pulled apart, the differential input voltage forward-biases those diodes causing a large input bias current. It has the most stable input capacitance vs. 53 MHz gain bandwidth product, 24V/us slew rate. 1-nV/√ Hz noise density with an ultralow distortion of 0. Now they seems to have changed again to opa1612 in many places - maybe a suggestion to try ? I have tried ne5532, opa2604, lm4562 and opa1612 and I prefered LM 4562 in both Aiyima a07 and the tpa3251-based Aiyima a04. Dynamics felt better, bass felt more defined and the upper midrange seems to have more air. Jul 4, 2009 · Marketing 101 by having one of the engineers on the diy threads because it creates interest (especially from spec crazy diy-ers who “need” the lastest and best specs and use “word of mouth” via the audiophile threads to push cost up by popular demand) They do outsource them to official distributors ie Mouser, Digi-Key but you have to buy them in bulk (we’re talking 100s to 1000s) and This OPA1656 OPA from Texas Instrument offers very good performances for audio use. Mar 17, 2019 · The OPA1641 would be slightly better. I used though the better TIs in output stages of middle class DACs as these benefitted from a more round /warm presentation with less details, as that masked their weaknesses and in fact Dec 28, 2018 · I would like to see the OPA1656, a burr brown sound plus chip. 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. It's a virtually unknown chip as when you search on Digi-Key it doesn't come up as soundplus. 5). I don't care about listening tests or something else, just want to use the technical better one in my amp. IMHO the outcome was mostly decided by how the opamps responded to the RF coming out of the dac chip. 1 kOhm - 1 MOhm 4). 1F X7R on the backside with the shortest possible lead length. And this preamp sounds MUCH better than Audio Research, Burmester and Accuphase preamps costing above €10. Dec 11, 2019 · Normally you'd regularily search in the manufacturers new product listings first for any new interesting products. (or the 2156) The opamp has good phase margin and seems quite tolerant of sub-optimal layout. Feb 11, 2021 · looks very similar to the eighth image from post #2 of Bel Canto's S300i/S300iu - driven by dual mono Icepower amplifier modules with switch mode power supply - go to Inside the Bel Canto S300i integrated amplifier | Audiokarma Home Audio Stereo Discussion Forums and Bel Canto e. ••• 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, Mar 9, 2023 · SMSL SU-10 vs M500 MKIII vs DO300 21 vs 9 vs 11 dual op-amps OPA1612 (accoring to the spec from smsl-audio) What is the Op-amps doing in that? M500 SINAD is higher than DO300 with less op-amps. It could sound pretty good, but one could get sound just as good from IC opamp designs. Hi there probaly a simple question maybe not. 5 V to 36 V) on 3. As per datasheet Fig 7, OPA1656 achieves this pretty well with loads of 2k (or more) @ output voltage 3V(rms) OPA1612 achieves this flatness of THD+N curve , eg in inverting mode G=-1 (Fig. Tried putting in opa1612 today. Feb 6, 2018 · We already tried try opa1656 opa1612 lme49720 njm4585 etc. 4nV/rtHz both flat. One S300iu integrated amplifier | Stereophile. Some people have more recently started using OPA1656, which are very good, although they are a little less authoritative in the bass. 4 Calculating Voltage Noise at the Output. OPA1612 is a great amplifier, however, it is bipolar (input type) and when used immediately at the front-end of a guitar input, the input current noise (1. So you'd be "degrading" the performance by going that route (even though both are excellent). but the difference between opa2604 and LME49720 is much smaller than the difference between these two compared to the original ne5532. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety Jan 10, 2016 · He talked to me about OPA1611's versus OPA134's as well as the OPA1612's versus OPA2134's. I've had the Burson V5i, and the V6vivid and I have no space to put a sparkos labs opamp single or dual channel. The op amp offers a temperature range of -40°C to +125°C and is available in an 8-pin SOIC package. For example, Aol for the OPA1656 with a 600 ohm load will have a linear output swing that is 1. 6 mA but I know I’m in the Op amp thread so I don’t want to take the thread off topic. 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. Mar 17, 2019 · It has the most stable input capacitance vs. Jun 5, 2023 · 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. But that does not say anything about the SQ. Now all the folks are using opa2134 op -amps as the replacement. 6 fa/rtHz broadband current noise. 7 pA/rthz) will multiply with the pickup resistance (varies quite a bit, say typical is 10 kOhm) to become the 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. 5 metre cable at 33. Does anybody I read on several forum the advantage to use specific AOP for the final stage of DAC or Amplifier. NE5532 is a very good amplifier especially for the price ($0. 7 of OPA1612 datasheet) Feb 28, 2021 · The new breed of TI J-Fet opamps offer superior performance to that old soldier the OPA2134. The OPA827 for example has superior load drive,much lower distortion and miniscule DC offset. CMRR is not a big issue. If you Mar 17, 2019 · OPA1656 is less noisy than the OPA827, 2. May 15, 2022 · Buggle2 Riaa board. I did an A/B comparison to LME47920 (metal cans), burson V5i, V6 and also the Sparkos Pro discrete op-amps on one of my DAC's. Taking advantage of a wide power supply range and mounted on a DIP8 bracket, it can replace many other models. The OPA1642 is “one step down” but still very highly rated, and it is JFET-input which should give a low enough DC-offset to be used directly in this kind of application. Aol 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. I prefered the sound of my DAC with the OPA1656's hands down even over the discrete op-amps. The Texas Instruments OPA1656 has a specified temperature range from –40°C to +125°C and is offered in an 8-pin SOIC package. Two cases were evalutated – in a 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. common mode voltage that I've measured on any op amp. 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. >100mA output current. If you have guitar related questions, start with the "search" field at the top of the page. Mar 17, 2019 · Here is a copy paste of the result for OPA1656 OPA1656 In the past I have to say I prefered widely the AD precise sound vs the softer traditional TI sound. These sound great and outshine many of the other modern high performance audio opamps out there today. Tested a lot of OP, including LME49720, OPA1612, OPA1642, MUSES8920 and MUSES8820. alongside with some aliexpress el`cheapos for like 2 buck a piece instead of 7. OPA1612 sounds better than any transistor preamp I've ever heard and better then my own 6N6P 2 case -no barrels hold- 36kg monster preamp with a 100% double blind test win rate. Dear all, aiming to keep THD+N figures constant over the audio frequency range. Now, we run through a hand calculation to find the total noise of a simplified audio 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 outdated opamps. I no nothing about this. For the case of Apr 6, 2020 · The OPA2134 is very ordinary, I consider it a side step to the NE5532. It's best use as an alternative to opa1612 when noise is not a big concern. Mar 14, 2010 · Tubey, better late than never - I just replaced all NE5532 amps in Benchmark DAC1 with OPA1612 and play it so far for few hours. This is a forum where guitarists, from novice to experienced, can explore the world of guitar through a variety of media and discussion. OPA1656 sounded worst, Muses 8920 sounded best. The output swing for Aol should be considered as it is different between the two devices. I have a 1988 carver stereo per-amplifier. 10 Ohm - 10 kOhm, 2). 000. 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 Apr 10, 2019 · I have interested in low ESR Electrolytic Capacitors to power the Opa1612. 3 MHz. 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. com with a TI insider involved. May 23, 2018 · Opa1656 and opa1612 without tweaking have better performance than almost any discrete solution. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety Dec 10, 2021 · This is my first time doing anything DIY with audio. Total Noise of OPA1656 vs OPA1612. I felt a great improvement overall. . discontinuities into the gm vs Vdif curve. It could be very interesting to test their performance: - SNR - Bandwish - slew rate-. The Vendor's Bazaar forum is for commercial offers and transactions. The amp Apr 5, 2021 · The original amp has the OPA1656 and the other has the OPA1642. Jan 28, 2018 · 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). Composite amplifier is one of the best application with opa1656. MUSES8820 is the best, IMHO. Is the OPA1656 the correct opamp to use? I heard it was the best so that’s why I picked it. Mar 17, 2019 · Benefit is lower dc offset and less distortion also high open loop gain also superior stability. Jul 4, 2021 · The article linked below isn't the be-all and end-all on op amps tests, but very informative. 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. Jul 5, 2006 · SQ was about the same as other ESS-based dacs in that class. Mar 17, 2019 · A quick snapshot of the OPA1656 performance specs: 2. 000015% at 1 kHz. Sep 27, 2019 · The OPA1656 operates over an ultra-wide supply range of ±2. 9nV/rtHz vs. I think it's a matter of circuit design and implementation. OPA1612 is fuller sounding - especially lower midrange but also more dynamic. The OPA1656 immediately raised my attention, plus there was/is a long thread about it on diyaudio. I repeated measurements a few times, using sets of resistors: 1). 9 mA of supply current to accommodate the power supply constraints of many types of audio products. i expected them to put some The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. It offers exceptional performance in almost any audio application. OPA1611, OPA1612 www. Regarding the tone stack, if there is enough gain in the front-end, the input-referred noise may not be impacted by the resistances. 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 FET-input architecture achieves a low 2. Mar 17, 2019 · The Vendor's Bazaar forum is for commercial offers and transactions. 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 Dec 6, 2018 · The diyaudio forum might be better suited for posing the question. 100 Ohm - 100 kOhm, 3). Soundstage and placement felt more solid. It was recently re-capped and all new guts put in . I’m going to solder the IC to a soic to dip adapter then plug it into the the amp. -131 dB THD+N at 1kHz, 600 ohm load, 3. The OPA 627 is well over price and is bass heavy and it’s not worth the price you pay for it 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. Opa1656 has good phase response at high frequency. 25 V to ±18 V (4. 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. Goggle bill d mod carver c-1. It's a killer OpAmp, and better suited to non-inverting buffer duties than the OPA1612/2211 Products Precision op amps (Vos<1mV) INA1620 — High-fidelity audio operational amplifier with integrated thin-film resistors and EMI filtering OPA130 — Single, 1-MHz, 20-pA bias current, 530-µA power, FET operational amplifier OPA131 — Single, 4-MHz, 50-pA bias current, 750-µA power, FET operational amplifier OPA140 — Single-channel, 11-MHz, low-noise 36-V JFET precision operational The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. 9mA of supply current. xpb zsxgz ebiyy ceze ailr dhsk qgdy maoy pywzvc sqmslfd
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