Opa1656 vs opa1612 vs opa16 audiophile. 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. Now, we run through a hand calculation to find the total noise of a simplified audio OPA1611, OPA1612 www. Dual customzied solution will give unmeasurable distortion (possibly -180db). Mar 17, 2019 · The OPA1641 would be slightly better. I looked at the Slew Rate as my main Apr 10, 2019 · By newer I meantnewer, because OPA1612 is a newer design then let's say NE5532 or even LM4562. 000015% at 1 kHz. tnt-audio. Joined Sep 8, 2012 Messages 848. 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. e. 1 10 100 1000 1 10 100 1k 10k 100k 1M 10M 9ROWDJH1RLVH6SHFWUDO'HQVLW\ Q9 ¥+] Frequency (Hz) C006 Product Folder Sample & Buy Technical Documents Tools & Software 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. -131 dB THD+N at 1kHz, 600 ohm load, 3. 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. I’m going to solder the IC to a soic to dip adapter then plug it into the the amp. 5V to 36V) on 3. I think it's a matter of circuit design and implementation. Sep 27, 2019 · The OPA1656 operates over an ultra-wide supply range of ±2. Transients are stronger, both rimshots of snare drum and big-band trumpets. 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. Part #: OPA1656. My understand if noise isn’t a problem the opa1656 is great alternative to the opa1612. But $40-57 each. It's a killer OpAmp, and better suited to non-inverting buffer duties than the OPA1612/2211 Nov 30, 2021 · Stability should be considered especially with the wider bandwidth of the OPA1656. OPA1656: 3Mb / 42P [Old version datasheet] OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-Brown™ Audio Operational Amplifiers REVISED SEPTEMBER 2022: This OPA1656 OPA from Texas Instrument offers very good performances for audio use. 2-nV/√ Hz noise density and distortion of –127 dB at 1 kHz. 3nV/rtHz) and distortion (-124dB), wide bandwidth (22MHz) audio op amp. OPA1656 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). 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. 9mA of supply current. the differences aren't huge, but big enough to make a change worthwhile. --lme49722 lme4562 lm4562 opamp is very good sound ,higher ratings than opa2134 -but not as 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. but the difference between opa2604 and LME49720 is much smaller than the difference between these two compared to the original ne5532. 9nV/rtHz broadband voltage noise. Two schematics in parallel and eight in parallel for both 1656 and 1642 were measured. Nov 26, 2017 · thanks for your tips! i have tested the opa2604 and the LME49720 compared to the ne5532. The NE5532 is perfectly fine. This feature accommodates the power supply constraints of many types of audio products. 53 MHz gain bandwidth product, 24V/us slew rate. Is the OPA1656 the correct opamp to use? I heard it was the best so that’s why I picked it. (or the 2156) The opamp has good phase margin and seems quite tolerant of sub-optimal layout. It has a very good dynamic range and a low level of harmonic distortion. Feb 11, 2021 · According to the TI datasheets OPA1612 has less noise than OPA1656. Thread starter oldphaser; Start date Jan 10, 2016; oldphaser Chief Journeyman. In all, I will say the changes are noticeable, but not earth shattering. IMHO the outcome was mostly decided by how the opamps responded to the RF coming out of the dac chip. These sound great and outshine many of the other modern high performance audio opamps out there today. Since I am not interested in the V6 Vivid Dual that it comes with. Pin can be left floating or connected to any voltage between (V–) and (V+). Jan 27, 2024 · The OPA1612 has lower noise and distortion than OPA1656. 25 V to ±18 V (4. File Size: 3MbKbytes. Feb 11, 2021 · 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. Are there any other May 15, 2022 · LME49720 vs OPA1612 vs Muses02. 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. It has the most stable input capacitance vs. 2022-05-15 10:48 am #1 Total Noise of OPA1656 vs OPA1612. Parameter-, Bestell- und Qualitätsinformationen finden 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, Jul 4, 2009 · Here’s a great article comparing opa2156 CMO vs opa1612. 9 nV/√Hz at 10 kHz 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. Aug 24, 2012 · i tryed lme49722 opa2134 and opa1612 ,--. OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-Brown™ Audio Operational Amplifiers 1 Features • Ultra-low noise: – Voltage noise: 2. 1-nV/√ Hz noise density with an ultralow distortion of 0. 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 ran 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. forami. Regarding the tone stack, if there is enough gain in the front-end, the input-referred noise may not be impacted by the resistances. 5Vrms signal, 80-kHz measurement bandwidth. I used 10 or 12 in my preamp rolling project - never a problem with . 3V inside of each supply. 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. r/audiophile is a subreddit for the pursuit of quality audio reproduction of all forms, budgets, and sizes of speakers. OPA1612 is fuller sounding - especially lower midrange but also more dynamic. We would like to show you a description here but the site won’t allow us. 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 10, 2021 · This is my first time doing anything DIY with audio. I ended up staying with this one. The FET-input architecture achieves a low 2. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety 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). The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. I am planning to replace the NE5532 in my Burson Funk with the OPA1656. OPA1611, OPA1612 www. Download. 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. Find parameters, ordering and quality information 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). common mode voltage that I've measured on any op amp. com Sep 25, 2019 · The OPA165x operates over a very wide supply range of ±2. . May 9, 2023 · Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. Mar 17, 2019 · A quick snapshot of the OPA1656 performance specs: 2. 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. the ne5532 looks a bit harder, narrower and more direct, the other two a bit more relaxed and ※在庫数欄の表記が『おひとり様 点まで』となっている商品は、現時点で、おひとり様（1団体様）あたりのご提供数量を表記の数量へ制限させていただいている商品です。 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. 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. CMRR is not a big issue. Composite amplifier is one of the best application with opa1656. com In no case did I have too high expectations regarding the sound Oct 2, 2020 · I want to drive a non-inverting OPA1656 from the wiper of a volume pot -- which means a range of source resistance for the OPA1656 from 0 to <del>Rpot/2<del> Rpot/4. Does anybody 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. 6 fa/rtHz broadband current noise. I don't care about listening tests or something else, just want to use the technical better one in my amp. 9 mA of supply current to accommodate the power supply constraints of many types of audio products. Our primary goal is insightful discussion of home audio equipment, sources, music, and concepts. One S300iu integrated amplifier | Stereophile. . 0:00 OPA1656(EQ) OPA2211( voltage follower)1:56 OPA2211 OPA1656オペアンプ回路のノイズ特性として、信号源の抵抗が大きい場合は、FET入力タイプが推奨されると 1 10 100 1000 1 10 100 1k 10k 100k 1M 10M 9ROWDJH1RLVH6SHFWUDO'HQVLW\ Q9 ¥+] Frequency (Hz) C006 Product Folder Sample & Buy Technical Documents Tools & Software 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 I'm with Jim here. The output swing for Aol should be considered as it is different between the two devices. For the case of OPA1656 ACTIVE SoundPlus™ ultra-low noise and Bipolar-Input Audio Op Amp OPA1611 — 1. Member. I prefered the sound of my DAC with the OPA1656's hands down even over the discrete op-amps. To check if they will match the previous ones that were made with balanced 10x paralleled op-amps. The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. Two cases were evalutated – in a 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. The schematic, spectrum and results are given below. 25V to ±18V or (4. May 23, 2018 · Opa1656 and opa1612 without tweaking have better performance than almost any discrete solution. For example, Aol for the OPA1656 with a 600 ohm load will have a linear output swing that is 1. 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 TI-Produkt OPA1656 ist ein(e) Burr-Brown™-Audio-Operationsverstärker SoundPlus™, extrem rauscharm und verzerrungsarm. ti. 4 nV/rthz. Taking advantage of a wide power supply range and mounted on a DIP8 bracket, it can replace many other models. TI has characterized the THD vs Rs for a lot of its recent devices, but alas not the OPA1656 (at least that I could find). 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). Description: OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-Brown™ Audio Operational TI’s OPA1662 is a Dual SoundPlus™ low noise (3. PRODUCTION DATA. >100mA output current. Mar 17, 2019 · We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). I would have no problem staying with them, but I like tinkering. 1F X7R on the backside with the shortest possible lead length. I would recommend OPA2134 or OPA134 and if you have money the OPA627 or OPA637. Thread starter forami; Start date 2022-05-15 10:48 am; Jump to Latest F. NE5532 is a very good amplifier especially for the price ($0. 4 Calculating Voltage Noise at the Output. The Texas Instruments OPA1656 has a specified temperature range from –40°C to +125°C and is offered in an 8-pin SOIC package. 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. Mar 17, 2019 · OPA1656 rolling I tried in all cases to bypass the rails with a 0. 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. You should be able to find single-to-dual DIP8 adapters for mounting 2xAD797 on a DIP8 socket. 5RQ Balanced Power - Tascam CD200 - Oppo 93 - Auvio HD Radio Tuner- MiniDSP OpenDRC-DI DSP, 2x4HD - AcourateDRC - UMIK-1 - ECM8000 - REW - Behringer DEQ2496 - Behringer UMC202HD and Focusrite 4Pre USB - Benchmark DAC2 HGC - Krell KCT pre and FPB 350mcx monoblocks - Sennheiser HD650 - MartinLogan reQuest 15" x 48" electrostatic hybrid with 12" sealed woofer 180Hz cross Mar 17, 2019 · I measured again the noise of OPA1656 vs OPA1642. Dec 6, 2018 · Tone controls? DAC reconstruction filter? The better FET-input op-amps are expensive because they are laser-trimmed and prices can be crazy. I had no oscillations or instability with the OPA1656. 5 V to 36 V) on 3. Page: 42 Pages. Opa1656 has good phase response at high frequency. Jan 10, 2016 · OPA1611 vs OPA134 or OPA1612 vs OPA2134. It's best use as an alternative to opa1612 when noise is not a big concern. Other cheap ones on my radar - OPA2134PA, OPA1612, LM4562NA. Compare the datasheets. It offers exceptional performance in almost any audio application. 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 Mar 17, 2019 · Benefit is lower dc offset and less distortion also high open loop gain also superior stability. Joined 2022. The op amp offers a temperature range of -40°C to +125°C and is available in an 8-pin SOIC package. Aol 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 • audio·phile: a person with love for, affinity towards or obsession with high-quality playback of sound and music. But that does not say anything about the SQ. 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. 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 OPA1656 - Better imaging / separation of instruments. Dec 28, 2017 · There are some things to watch out for when swapping op amps. 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! The OPA169x operational amplifiers achieve a new level of performance for low-power amplifiers with a low 4. The OPA1656 immediately raised my attention, plus there was/is a long thread about it on diyaudio. 1nV/√Hz Noise, Low Power, Precision Operational Amplifier OPA1612 System: Equitech 1. Mar 17, 2019 · I purchased 10 OPA1656's. com with a TI insider involved. 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 Dec 11, 2019 · Normally you'd regularily search in the manufacturers new product listings first for any new interesting products. OPA1656 sounded worst, Muses 8920 sounded best. The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. 5). THD+N vs Frequency (2-k Ω Load) OPA1677 , OPA1678 , OPA1679 SBOS855E – JANUARY 2017 – REVISED DECEMBER 2022 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 best sounding is OPA1612 ,not for driving headphones -low output current drive ,3ma current consumption ---then opa2134 the best all around as preamplifier it can be used at high gain 6-10 times,very good sounding and Musical,good for biassing in class A. 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