Opa1656 vs opa1612. We are also using Tubey, better late than never - I just replaced all NE5532 amps in Benchmark DAC1 with OPA1612 and play it so far for few hours. CMRR is not a big issue. According to the TI datasheets OPA1612 has less noise than OPA1656. MUSES8820 is the best, IMHO. The OPA827 for example has superior load drive,much lower distortion and miniscule DC offset. 다이나믹스나 저음 깊이감 측면에서 거의 비슷하다는 느낌을 받았습니다. Joined Mar 5, 2019 Messages 155 Likes 252. Now, we run through a hand calculation to find the total noise of a simplified audio system. Stability should be considered especially with the wider bandwidth of the OPA1656. 25 V to ±18 V (4. • audio·phile: a person with love for, affinity towards or obsession with high-quality playback of sound and music. TI recently introduced two devices worth looking into, updated BUF634A and OPA1656, both available as 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 This question is triggered by a repair I recently did where the originals, while still available, were stupid expensive. 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. From what I know the OPA1656 is currently the highest-spec audio grade standard opamp that TI offers. The OPA1612 has lower noise and distortion than OPA1656. I'll look at it if you know of one amp using OPA1612 sounding audibly better than another amp using cheaper op amp in objective listening comparison. All five op amps have more than half the noise compared to the NJM4560. It's best use as an alternative to opa1612 when noise is not a big concern. 1-nV/√ Hz noise density with an ultralow distortion of 0. 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 The OPA1656 immediately raised my attention, plus there was/is a long thread about it on diyaudio. It's a killer OpAmp, and better suited to non-inverting buffer duties than the OPA1612/2211. For this example, we are using the OPA1656 in a non-inverting configuration with a gain of 40 dB or 100V/V. My understand if noise isn’t a problem the opa1656 is great alternative to the opa1612. Dec 27, 2019 #7 restorer-john said: It's the The OPA1641 would be slightly better. 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 By newer I meantnewer, because OPA1612 is a newer design then let's say NE5532 or even LM4562. 9 mA of supply current to accommodate the power supply constraints of many types of audio products. Forums. But that does not say anything about the SQ. I's latest offering, the OPA1656. I'm up to, to design a 3rd or 4th order 20 Hz high pass filter with ultra low distortion. I would like to see these parts offered in a DIP package to replace the OPA2134PA. Heard it all here with different LS and The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. Compare the datasheets. I prefered the sound of my DAC with the OPA1656's hands down The OPA1656 operates over an ultra-wide supply range of ±2. Per-Anders Sjöström Prodigy 250 points Part Number: OPA1612 Other Parts Discussed in Thread: OPA1656. 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. Transients are stronger, both rimshots of snare drum OPA1611 vs OPA134 or OPA1612 vs OPA2134. 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). 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. Close to zero DC mv at its output would enable removal of the dreaded electrolytic coupling caps which will definitely lower colouration and The Opa1656 has a much wider and better soundstage. I also refurbish large format recording consoles. And this preamp sounds MUCH better than Audio Research, Burmester and Accuphase preamps costing above €10. The OPA1656 immediately raised my attention, plus there was/is a long thread about it The OPA1641 would be slightly better. I would use several thousand for one job, IF they were made However they measure and perform worse than SOTA audio ICs like lme49720, opa1612, opa1656 etc. Thread starter oldphaser; Start date Jan 10, 2016; oldphaser Chief Journeyman. 1nV/root Hz at 1kHz with a 10Hz 1/f corner and will cheerfully drive 600 ohms. V6 and also the Sparkos Pro discrete op-amps on one of my DAC's. . com with a TI insider involved. com OPA1612, MUSES8820, OPA1692, LME49723 and the NJM8801. Head Gear. 5 V to 36 V) on 3. Does anybody know design advantages of I'm using the OPA1612 dual opamp in a commercial design. Opa1656 has good phase response at high frequency. Aol 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. OPA1656 instead of OPA1612 by thuanth » January 27th, 2024, 2:57 pm I'm thinking of building a couple of a24 boards and want to try T. tnt-audio. 000015% at 1 kHz. New posts Search forums. Dual customzied solution will give unmeasurable distortion (possibly -180db). It has the most stable input capacitance vs. OPA1612 is one the most low-noise opamps ever built, so Menu. It offers exceptional performance in almost any audio application. NE5532 is a very good amplifier especially for the price ($0. Ha ha it's funny because I'm a wide and far reached detailed and accurate fanboy and some people find too many details to be annoying. I use these amplifiers for pro audio. who builds large PA speaker systems. The new breed of TI J-Fet opamps offer superior performance to that old soldier the OPA2134. opa1612는 오히려 기대한 것보다는 좋은 성능을 내주진 못했습니다. I don't care about listening tests or something else, just want to use the technical better one in my amp. Normally you'd regularily search in the manufacturers new product listings first for any new interesting products. The original amp has the OPA1656 and the other has the OPA1642. Benefit is lower dc offset and less distortion also high open loop gain also superior stability. Total Noise of OPA1656 vs OPA1612. 5). According to the TI datasheets OPA1612 has less noise than OPA1656. Jan 10, 2016 #1. ••• The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. Currently, I require opamps in the DIP package. 이전에 사용했었던 opa1656에 비해 큰 개선까진 없었습니다. Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. I talked yesterday to my buddy Greg B. The output swing for Aol should be considered as it is different between the two devices. Home. 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. OPA1656, and most modern CMOS op amps with rail-to-rail output stages, use a biasing scheme often referred as a Monticelli bias, named after Dennis Monticelli who published the topology while at National Semiconductor. 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. 15ppm, intermodulation way below that, 1. Opa1656 and opa1612 without tweaking have better performance than almost any discrete solution. Here’s a great article comparing opa2156 CMO vs opa1612. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety OPA1612: Filter topology for high end audio high pass filter (20 Hz) OPA1612 OPA1656. I prefer the opa2211 over the opa1612 (same chip but with less better specs). The Opa1612 is the audio version so they made the specs slightly The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. So you'd be "degrading" the performance by going that route (even though both are excellent). Harmonic distortion <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 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. OPA1612 is fuller sounding - especially lower midrange but also more dynamic. common mode voltage that I've measured on any op amp. 000. 3V inside of each supply. Reactions: Euphonic_employee, Xulonn, Speedskater and 5 others. Overall, don't recommend opamp rolling. 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. For example, Aol for the OPA1656 with a 600 ohm load will have a linear output swing that is 1. 4 Calculating Voltage Noise at the Output. Joined Sep 8, 2012 Messages 848. Buggle2 Riaa board. r/audiophile is a subreddit for the pursuit of quality audio reproduction of all forms, budgets, and sizes of speakers. The FET-input architecture achieves a low 2. Both (I believe have Fet-inputs) There’s also 2189 CMOS audio op amp has impressive specs of an impressive was designed for MUX friendly DACs and multichannel dacs! According to the TI datasheets OPA1612 has less noise than OPA1656. Composite amplifier is one of the best application with opa1656. Newk Yuler Active Member. The op amp offers a temperature range of -40°C to +125°C and is available in an 8-pin SOIC package. Tested a lot of OP, including LME49720, OPA1612, OPA1642, MUSES8920 and MUSES8820. opa1612를 받아주기엔 dk799, Other Parts Discussed in Thread: OPA1612, OPA1642, RC4136. fgjdmwehbmmhbehnpytqnqoubfjgsdposyfkikzknlraizaoo