Opa1656 vs opa1612 forum

Opa1656 vs opa1612 forum. I use one amp and I don't have any imbalance and it provides more power than what I need. and industrial applications, where maintaining signal. In my case the OPA828 has been a clear upgrade to the OPA627 but the OPA1656 is an upgrade to the OPA828. 08 @ Mouser). the differences aren't huge, but big enough to make a change worthwhile. Sep 25, 2019 · The OPA165x operates over a very wide supply range of ±2. I must test muses now. common mode voltage that I've measured on any op amp. Dec 10, 2021 · DIY Audio. Normally, that's not newsworthy because higher performing parts are coming out all the time. Actually it isn't even that. In Objective2 gain-stage I prefer the SS V5, with the hybrid V5i or with SS V6 there's a hiss noise when moving the volume knob and also the thump noise when switching the gain is higher. Mouser offers inventory, pricing, & datasheets for Texas Instruments OPA1612 Series Audio Amplifiers. 이번에는 OPA1612, AD8620을 들어보고, 원래 끼워져있던 MUSES8820과 비교를 해보게 됐습니다. It could sound pretty good, but one could get sound just as good from IC opamp designs. You will probably get lower distortion and will adversely affect dac sound quality. 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. £4. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. 線が少し細くなりましたが、小音量で全体のバランスが良くなり高域のクリア感が増しました。. The OPA2156 is a new, high-performance op-amp from TI. Feb 9, 2019 · Opa2156 is really not that noisy. The OP1656 will swing within 0. who builds large PA speaker systems. Markw4 said: We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). I talked yesterday to my buddy Greg B. Jun 5, 2023 · 5 units - 4 Rupees (5 US cents or so) each. Some work was also done to reduce common-mode distortion in the OPA1656 when the impedances at the inputs are mismatched. Joined 2009. 9‑nV/√Hz voltage noise density and 6‑fA/√Hz. But of course, how they're implemented and how they interact with the sound system as a whole makes all the difference. 5V/us even with a factor of 4 for safety. 25 V to ±18 V or 4. The OPA169x operational amplifiers achieve a new level of performance for low-power amplifiers with a low 4. 2K unbalanced and 4. 5 V to 36 V. Apr 6, 2020 · The NE5532 supports a max supply voltage of +/-22Vdc and a nominal supply of +/-15Vdc. 2-kΩ load, which increases headroom and maximizes dynamic range. We would like to show you a description here but the site won’t allow us. Standard opamp for that has pretty much become OPA1612. 611. OPA1656 Download. 25 V to ±18 V (4. Now i tested opa1612 with lme49720 and 1612 is better in my opinion. 25V to ±18V or (4. Buck cap change to 1500uF/80V/Nichicon due to 1800uF/63V/Rubycon not able to purchase. May 23, 2016 · Re: Q: (better) alternative for OPA627 ? The Analog Devices ADA4627 is essentially a second source version of the OPA627. My favorites at the moment opa1642 and this one opa1656. Hi Brian, OPA2134 is probably a good choice in general. Feb 2, 2024 · In a recent Bruno Putzeys video interview he shared a preference for the OPA1656 with the Purifi amp. I'm waiting for OPA1656 and ADA4896 to try at I/V stage. Amazing value and no more urge to upgrade. Jan 7, 2021 · The different players sounded different. 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 Mar 17, 2019 · The OPA1641 would be slightly better. Gain bandwidth product: 53 MHz. It was founded in 1930 and is headquartered in Dallas, Texas. The OPA827 for example has superior load drive,much lower distortion and miniscule DC offset. Copied the given . The op amp offers a temperature range of -40°C to +125°C and is available in an 8-pin SOIC package. 5V to 36V) on 3. With a FET input op amp input current noise is lower, but the input voltage noise is higher. It is a very accurate OP amps with a linear restitution It is much less colorful than an OPA627 for example and it lets out all the micro details when listening Feb 11, 2021 · The next op-amp I am planning to try is the OPA1612 but perhaps the DAC is the limiting factor and perhaps the measurements will look very similar to the OPA2134 even if the OPA1612 is a really good op-amp. And this preamp sounds MUCH better than Audio Research, Burmester and Accuphase preamps costing above €10. Mar 17, 2019 · Rolling opa1642, opa1612, muses8920, 2xopa627bp, lme49720na, opa2134. share a test between OPA1612 and OPA1656. This is just a theory. But I really like the FET's in that position. 9 nV/Hz and a current noise density of 6 fA/Hz, enabling extremely low noise performance in a wide range of circuits. Generally a FET input has a higher 1/f noise corner than a BJT input. OPA1656 has about 6 dB more open loop gain at audio frequencies, so distortion is potentially lower. Psychic contributors here now . As compared with the OPA1656 which is 24V/us. Oct 2, 2020 · Member. You can check up and compare prices in your area. This is my first time doing anything DIY with audio. #701. #1. Now, we run through a hand calculation to find the total noise of a simplified audio system. Mar 17, 2019 · It has the most stable input capacitance vs. It is designed for low noise for its application, but is still ~12 nV/rtHz compared to other low-noise audio op-amps, e. Mar 20, 2018 · Aug 18, 2019. May 23, 2018 · May 28, 2018. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety 主题中讨论的其他器件：opa1612、 buf634a、 opa1656、 buf634、 ths6012、 tpa6120a2. Soundstage and placement felt more solid. 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 Sep 6, 2023 · I was using opa1656 with fosi v3 ever since I got the uni. 25V of the rails, so for +/-18V it will do 17. Sep 6, 2023 · I was using opa1656 with fosi v3 ever since I got the uni. Not exactly universally compatible with all preamps. #29. 9 mA per channel. Apr 5, 2021 · The original amp has the OPA1656 and the other has the OPA1642. 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. by site admin February 07, 2019. I would add a little capacitance (10-22 pF) across R2. At this point noise and ultra low noise supplies might be the last area I should put more effort into for this interface. 95 board. 000015% at 1 kHz. DACのオペアンプを交換しました。. 7 of OPA1612 datasheet) Sep 27, 2019 · The OPA1656 operates over an ultra-wide supply range of ±2. Depending on the actual application circuit, there are alternatives with better noise performance. 4 mA per opamp section, which is significantly less than the 5532. 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. It appears that the OPA1611/2 have a lower noise voltage Mar 17, 2019 · If the impedance is high (10k ohm or higher), then a FET input op amp may be better. 1-nV/√ Hz noise density with an ultralow distortion of 0. The OPA1642, however, is also LESS expensive ($2. If a bipolar-input amplifier can be used, then you might OPA1656 Datasheet (PDF) - Texas Instruments. Texas Instruments (TI) is a publicly traded company that designs and manufactures semiconductor and computer technology products. The specs on the opamp are really good, almost as good as the OPA1612 (and better in some ways that Dec 7, 2023 · Input Opamp Change to OPA1556,this is due to part unified that we found it perform the same as OPA1612 in another project. Mar 28, 2022 · I use two OPA1656 in parallel in the HP-2. Tried putting in opa1612 today. 相手となるデフォのLME49720は輪郭がはっきりして線が太めで、耳 Mar 17, 2019 · We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). I used 4 Burson V6 Vivid in my Burson headphone amp but I have replaced them all with OPA1656. You retrieve so much details and trebble extension but could be a bit fatiguing. Nov 26, 2017 · thanks for your tips! i have tested the opa2604 and the LME49720 compared to the ne5532. 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. With a gain of 10 V/V (20 dB) that phase wobble will result in low-ish phase margin. Prodigy 230 points. on LTSpice load, the lengthy lib update happend. And when you parallel it the voltage noise will drop further. Transparency got way better. It's possible the OPA1656 vs OPA1612 difference may be preferred with the 3E Audio 260-2-29A build too? Apr 8, 2021 · I tried OPA1622, OPA627 and OPA1612 at I/V stage and OPA1612 is clearly the best to my ears. 4K balanced. 5V inside of the positive rail . From what I know the OPA1656 is currently the highest-spec audio grade standard opamp that TI offers. It is a very accurate OP amps with a linear restitution It is much less colorful than an OPA627 for example and it lets out all the micro details when listening The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. Jul 4, 2009 · New BUF634A has higher slew rate, wider BW and decreased quiescent current in wide-BW mode, and is cheaper than original 634. 3V inside of each supply. Joined 2015. OPA627 is really bass forward but you lose details, clarity and energy. I was able to test the following BURSON op-amps: SS V5, V5i, SS V6 Classic, SS V6 Vivid. lib SYMATTR Value2 OPA1656 SYMATTR Description TI/BB Audio FET Opamp to get the same symbols as the ordenary Opamp 4. Alex The OPA1612 does not seem to have the process contamination of the LM497X0 that produces rocky-sounding noise. 75V. 1편을 보고 오시는 게 이해가 편합니다. Quiescent current: 3. Dynamics felt better, bass felt more defined and the upper midrange seems to have more air. ) He talked to me about OPA1611's versus OPA134's as well as the OPA1612's versus OPA2134's. Since I am not interested in the V6 Vivid Dual that it comes with. However some manufactures (eg, NAD 3150) went for +/-18. Voltage Noise Contribution (OPA1612) Figure 3-4. To hear Bruno's discussion on OPA1656 scroll forward to 33. 5 V to 36 V) on 3. Aol for the OPA2134 with a 600 ohm load has an output swing that is 2. So far I don't hear any harsh sibilants (very clean) but it is virtue of my speakers. 그 동안 수많은 Jul 23, 2022 · オーディオ. Download. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety Mar 14, 2010 · NE5532 is very flat and even sounding but is no comparison to OPA1612. Sep 26, 2019 · OPA1656 is a ultra low noise fet operational amplifier and delivers a low distortion of 0. Part #. 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. File Size. So while Bruno prefers the OPA1656, I wouldn't discard a build with the OPA1612. We are also using OPA2210: Audio applications. 2010-06-10 8:32 am. 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. 20+ units - 2. Texas Instruments OPA1612 Series Audio Amplifiers are available at Mouser Electronics. #49. 5 US cents each. 1N4007, 80 for 1 US $, and just $0. The data sheet is very handy for audio designers working with 600Ω loads, but also presents 感谢您考虑为您的设计使用我们的音频放大器。 我没有你提到的书,但我有一本书叫小信号音频设计道格拉斯自我。 他在这本书中讨论了 Sallen 和 Key 高通滤波器、以及失真。 OPA1656具有很好的 THD + N。无底插头我刚刚在最新的应用手册中突出显示了 OPA1656。 The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. Sound is more "color", and "massive". This was interesting as both the March Audio and the Buckeye Purifi amps were being built with the OPA1612. Jonah Strauss. Mar 17, 2019 · 2022-07-15 7:58 pm. . 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise May 21, 2020 · 결과보고가 아니라 중간보고 2로 찾아왔습니다. #6. Nov 30, 2021 · The output swing for Aol should be considered as it is different between the two devices. Overall balance with new amp is a little darker but with better transients. the ne5532 looks a bit harder, narrower and more direct, the other two a bit more relaxed and Mar 21, 2023 · The trade off would be noise vs stability. TI is a global leader in the production of analog and digital signal processing (DSP) integrated circuits, as well as embedded processors and other OPA1612 ก็เสียงดีนะ ซื้อมาลองเเล้ว ถือว่าเป็น OP-AMP รุ่นใหม่ที่ถูกพัฒนามาเเทนเบอร์ดังๆ ในอดีต พวกเเอมป์ราคาเเพงๆ นิยมใช้ OPA1612 VS MUSE02 Mar 17, 2019 · So your final number is too high by a factor of two. OPA2156: HiFi in CMOS. DK799 OPAMP를 바꿔보았다 - 중간보고. Description for the OPA1656. 在功率 放大器、尤其是耳机放大器中使用复合设计、在音频行业中最近变得越来越流行。 在许多情况下、超高性能音频运算放大器(例如 opa1612)后跟高电流放大器(例如 opa564)。 Feb 11, 2021 · The JFET input devices give their best noise performance at medium impedances, in the range 1 kΩ–10 kΩ. 4 nV/rthz. 41 Kbytes. Jan 15, 2023 · The pages for the "Hypex NCx500 DM Lux Dual Mono Amplifier" & the "Hypex NCx500 ST Lux Stereo Amplifier" state that they use the OPA1656, but the "OP Amplifier Selection" drop list has the OPA1612 (and the Sonic Imagery and Sparkos options), while the page for the "Hypex NCx500 ST Stereo Amplifier" only mentions the OPA1612. For this example, we are using the OPA1656 in a non-inverting configuration with a gain of 40 dB or 100V/V. 000. Sep 28, 2023 · 2. Mar 17, 2019 · 2019-04-21 2:49 pm. SOP8パッケージの交換は面倒なので、最後にすべくOPA1612に変え Slew rate: 24 V/µs. Great table. We are also using Other Parts Discussed in Thread: OPA1612, OPA828. #2. If you like, you can use two opamps in the package with some extra r c components to make a super opamp which will give unmeasurable distortion. But this time it's a bit more interesting. Audiophonics uses TI-LM4562 by default, which on paper has slightly lesser specs than the OPA1612 and OPA1656 which are used in the other custom implementations (EVAL, VTV, Neurochrome, BoXem etc). 3. Mar 17, 2019 · Hi John Yes, did it my way… 1. kozzyosko December 10, 2021, 10:34am 1. + + 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. Jan 10, 2016 · Jan 10, 2016. This feature accommodates the power supply constraints of many types of audio products. Using OPA1612 that are more tolerant of RF is a good start. R. OPA1612 is open sounding but is a little warmer possibly because of the lower midrange roundness. It's a big beautiful world out there! Oct 11, 2021 · The OPA1656 is an operational amplifier (op-amp) designed for audio and industrial applications where signal integrity is critical. 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 Jun 29, 2021 · THS4631, OPA1656, LME49990, LME49722. OPA1656. I am planning to replace the NE5532 in my Burson Funk with the OPA1656. Altered text SYMATTR Value OPA1656 SYMATTR Prefix X SYMATTR SpiceModel OPA1656. HAL9000 said: If this is a real D10 schematic - the OPA1612AID opamps would be more suitable for both I / V and differential summing positions. Total Noise of OPA1656 vs OPA1612. The Texas Instruments OPA1656 has a specified temperature range from –40°C to +125°C and is offered in an 8-pin SOIC package. The OPA1655 and OPA1656 (OPA165x) are Burr-. And of course, the price on the OPA1656 is lower. Pardon if any of the following has been covered. It would be interesting to know what the input impedances are for the Sparkos and Sonic Imagery opamps. add a optional 12V connector (not populated) for some people that need for power LEDs,etc. So many choices. Any futher recommendations? my favs 1642/1656, 1612, lme49720na 2xopa627bp, ••• Mar 17, 2019 · 2019-07-04 11:22 pm. 9 mA of supply current to accommodate the power supply constraints of many types of audio products. 01 on the video below. OPA1656 sounded worst, Muses 8920 sounded best. OPA1656 is positioned for audio applications: low noise and really good THD (-131dB) and high output current (100mA), but still needs a series resistor to drive capacitive loads unfortunately. DK799를 산 지 꽤 오래 됐습니다. 1. SMSL DAC M300MarkII 改造7 オペアンプ交換 LM4562→OPA1612. I have not tested the OPA1612 with high value bias resistors to see if it has the latch-up/bias current correction start-up issues of the LME49720. 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. ah so much other untested opa's 1678 still on my list ina1620. Click here to check the latest version. In terms of noise performance in the real world the OPA1612 beats the LME49720. 2-nV/√ Hz noise density and distortion of –127 dB at 1 kHz. engie490 said: I noticed in Purifi's specs that the input impedance is 2. If a FET-input amplifier is required for low bias current (such as for a phono preamp), you might consider the OPA1642 or OPA1678. current noise density, allowing for very-low noise. try modding with better FET input opamp, like OPA2107 or OPA2111. Jul 4, 2009 · The entire OPA627 line sounds obsolete compared against OPA828. OPA2604 is FET input opamp. May 23, 2018 · Problem is, i don't buy into the discrete opamps anymore. Added a new OPA1656. but the difference between opa2604 and LME49720 is much smaller than the difference between these two compared to the original ne5532. Jan 2, 2021 · OPA1656 / OPA1612 / Burson V5i / OPA627 / Genuine NE5532 / Genuine Muse 02 / 0PA1622 / OPA1642 / OPA1602 The question of Op amps has already been debated on DIY audio, and I had used the OPA1656 and I think the opinions are unanimous, these Op amps are very good and seem to work the best with those amps. #47. The FET-input architecture achieves a low voltage noise density of 2. It has the most stable input capacitance vs. There are four adapters on each $2. The OPA1656, OPA1612 (the ones I'm currently using) or a low noise NE5532AP (if you really like the sound from the stock opamps). a low 2. The FET-input architecture achieves. 2V inside the negative rail and 2. Part Number: OPA2210. It has a modest power consumption at typically 1. Jul 22, 2020 · JohnYang1997 said: Only opamps that I would remotely recommend are opa1612, opa1656. The OPA1611 and OPA1612 offer rail-to-rail output swing to within 600 mV with a. Jan 21, 2022 · You have answered another one of my questions before I ask - input impedance - I was reading earlier about OPA1656 vs OPA1612, and bipolar vs FET. 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. Rail-to-rail output. OPA1612 is bipolar input opamp. Dec 12, 2023 · It sounds great too. Bottom line, check the supply voltages, pin 4 and 8. 000035% (–129 dB) at 20 kHz If you love the OPA1612 you will love the OPA1656 too. So your equation should give 8. Many opamps have a max supply of +/-18Vdc, so simply rolling opamp into such amps would cause them to smoke. Jan 6, 2019 · I have to say that this opamp has a very well input stage symmetry which is better than opa1612, opa2156, opa1656, ADA4898, and many-many other opamps 3-4x more expensive. #1,608. The TL072 is a dual opamp. 005 each in 1000 quantity. TOPPING DX7 Pro のオペアンプを交換し、組み合わせを試し、理想の音質へ近づけました。. opa1612 opa1656($3) have thd performance better than -140db. I also recommend just leave it as stock. From the data sheet, in comparison to the OPA1642, I see that the OPA1656 has slightly less voltage noise but also slightly more current noise; slightly faster and less THD, but worse CMRR. One difference between the 1612 vs 1656 is the 1656 has higher output current availability. Whether it is that noisy for you depends upon your application. The effective input noise depends on both the input current noise & input voltage noise. Jul 4, 2009 · The OPA1655 is the single channel version of the OPA1656. May 15, 2022 · Member. Newer op amps provide a far more detailed and precise sound, which in turn also results in a broader tonal range. 1-nV/√Hz noise density with an ultralow distortion of 0. LME49720 sound is boringand too light. 4 Calculating Voltage Noise at the Output. Feb 28, 2021 · The new breed of TI J-Fet opamps offer superior performance to that old soldier the OPA2134. There are many cheap opamps to try. 2020-10-02 10:56 pm. Question 1: yes, positive L and positive R are the right terminals for mono. 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. It can be replaced but you'll get diferent sound character. The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. Some people have more recently started using OPA1656, which are very good, although they are a little less authoritative in the bass. Feb 6, 2018 · 最近オペアンプ交換が楽しくて色々試してみました。個人のメモを兼ねてレビューしてみます。環境は、CD取り込みからハイレゾ化まで手軽にできるCurioSoundを使用してCDから取り込んだデータを96kHz 24bitのflac形式で保存。 "安いのにすごいSHANLING M2sを買いました"で紹介したM2sからラインアウト Dec 11, 2019 · São Paulo, Brazil. MUSES01は前記事にも書きましたが、最初に聴いたときは美音が衝撃的でした。. g. The FET-input architecture achieves a low 2. Dear all, aiming to keep THD+N figures constant over the audio frequency range. Other Parts Discussed in Thread: LM4562, , INA1620, OPA1622, OPA1656, OPA828, OPA1642, OPA1678, OPA1612, BUF634A. Best Regards, Chris Featherstone Jul 4, 2021 · I recommend you buy five of (these) boards to assist with the experiments. 50 Rupees, or about 3. 9mA of supply current. Regarding the tone stack, if there is enough gain in the front-end, the input-referred noise may not be impacted by the resistances. Mar 5, 2020 · In principle all variants should sound transparent, but you have the option to change the Audiophonics OP amp if you want. I strongly recomend to change LME49720 to OPA1612, I listen my D10S with this OPAMP (Also have LME49860), OPA1612 have better bass (mutch deeper) and softler treable with same detal level. The slew rate is higher than for the 5532, at 13 V/μs against 9 V/μs. 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. We are also using Jan 6, 2010 · Member. Brown™ op amps designed specifically for audio. Mar 17, 2019 · The OPA1641 would be slightly better. 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 Sep 26, 2019 · OPA1656 is a ultra low noise fet operational amplifier and delivers a low distortion of 0. 5Vdc. (NOTE: We once owned a recording studio together back in the late 1970's through the early 1980's. asy using the ADA4627 as a template 3. Now you are able to audition the AD746 and the LT1124 and the AD8599 and the OPA2209 and the LME49723 and the OPA1656. 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. lib file into the related LTSPice folder 2. the OPA1612 at ~1 nV/rtHz. Nov 30, 2020. OPA1656 Dual D (SOIC, (8) (1) For all available packages, see the package option addendum at the end of the data sheet. The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low. fidelity is crucial. IMHO the outcome was mostly decided by how the opamps responded to the RF coming out of the dac chip. Wide supply range: ±2. 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). 60/40 solder, I paid 70 Rupees, or about 90 US cents, for a 50 gram reel a few days back. Note that while the OPA1656 is unity gain stable, it does have an internal compensation circuit that causes a phase wobble in the 1-10 MHz region. It is great to have some measurements behind the OP amp selection. Jul 5, 2006 · SQ was about the same as other ESS-based dacs in that class. Dec 14, 2015 · Technical support for the OPA1622 is available in the TI E2E™ Community Precision Amplifiers forum, where engineers can search for solutions, get help, share knowledge and solve problems with 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. For example, Aol for the OPA1656 with a 600 ohm load will have a linear output swing that is 1. 64 GBP / €7,06 one off from RS. I felt a great improvement overall. This is a rarely needed parameter as I guess but some of the measurement tasks require that kind of symmetry, and I just bought 1K pcs of RT6863S to use that in the Cosmos Jan 4, 2022 · In a recent Bruno Putzeys video interview he shared a preference for the OPA1656 with the Purifi amp. wi bd lf qb hi wx bc wh no xr