Opa1656 vs opa1612 reddit

Opa1656 vs opa1612 reddit. 1 2 > Similar Threads. I agree with you, OPA1612 is really good regarding details resolution, OPA1656 has the best of both world : ultra high definition regarding micro details and very neutral but still warm. If a transient causes the op amp inputs to be pulled apart, the differential input voltage It has the most stable input capacitance vs. Change Location. Two identical gain 11 amplifiers were tested. I prefer the opa2211 over the opa1612 (same chip but with less better specs). Goggle bill d mod carver c-1. That unit came with the Sonic Imagery's 990ENH discrete operational amplifier ("opamp") in the buffer stage (pre-amplifier). So many choices. Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. OPA627 is really bass forward but you lose details, clarity and energy. 5nV/√ Hz noise density with an ultralow distortion of 0. 9 The opamp AKM uses for AK4499 I/V is OPA1612. The Opa1612 is the audio version so they made the specs slightly Other Parts Discussed in Thread: OPA1612, OPA1642, RC4136. OPA1656: High If I could also request test of: OPA1642 ~ 2 Euro OPA1656 ~ 2. I was wondering if the OPA2604's could be replace with a dual opamp like the OPA1612 with similar or hopefully better results than the OPA627's? Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. OPA1656 also has a pole-zero pair in the open loop gain curve to boost the open loop gain at audio frequencies (hence the 53 MHz gain bandwidth product). You can use Electronics Calculators to calculate the DC offset. It appears that the OPA1611/2 have a lower noise voltage, wider bandwidth and higher slew rate than the OPA134 and OPA2134's. It sounds great too. OPA1656 sounded worst, Muses 8920 sounded best. The Texas Instruments OPA1656 has a specified temperature range from –40°C to +125°C and is offered in an 8-pin SOIC Now you are able to audition the AD746 and the LT1124 and the AD8599 and the OPA2209 and the LME49723 and the OPA1656. The OPA1656 operates over an ultra-wide supply range of ±2. It was recently re-capped and all new guts put in . The owner then ordered a set of Sparkos Pro SS2590 discrete opamps. Pin can be left floating or connected to any voltage between (V–) An OPA1612 has slightly better specs than an LM4562---less noise and distortion, faster, and more output voltage swing. Total Noise of OPA1656 vs OPA1612. Please confirm your currency selection: Mouser Electronics - Electronic Components Distributor. OPA1656 will not have the flat, 5 ohm, output impedance of the OPA1622. OPA1612 sounds better than any transistor preamp I've ever heard and better then my own 6N6P 2 case -no barrels hold- 36kg 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 Opa1656 and opa1612 without tweaking have better performance than almost any discrete solution. 9 $ , they have a decent margin ? Could someone help me, please? I would like to replace the RC4558 with the OPA1612. Facebook Twitter Reddit Pinterest Tumblr Photos: 3 amps side by side (MAX, Fosi V3, original A07), close up of front of the A07 MAX, rear panel of the MAX) This is a mini-review of the new Aiyima A07 MAX class D amplifier from my "average Joe" perspective. Dual customzied solution will give unmeasurable distortion (possibly -180db). OPA1656 had respectable slew rate without slew boosting so I opted to forego that circuitry in the audio part. This gave me a chance to I did replace OPA1612 for OPA1656, and also switched ADC input range for the 1. Standard opamp for that has pretty much become OPA1612. Low THD and Precision OPA1612-Q1 There are some things to watch out for when swapping op amps. Audio, Audio, Audio! Amplifiers, Phono preamp, DACのオペアンプを交換しました。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。SOP8パッケージの交換は面倒なので、最後にすべくOPA1612に変えちゃいました。SOP8をDIP変換で交換出来るようにとも考えましたが、安定性を考えて中止です。 The OPA169x operational amplifiers achieve a new level of performance for low-power amplifiers with a low 4. 000 (DIY!) tube preamp with ※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。 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. Compensation even with 22pF causes oscillations with or without a Zobel network, so this OPA should be used without compensation. But this time it's a bit more interesting. 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). 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. 7 pA/rthz) will multiply with the pickup resistance (varies quite a bit, say typical is 10 The OPA165x operates over a very wide supply range of ±2. Transparency got way better. I like how it sounds at the headphone outputs, yet, the inputs, have gone wrong and 1/2 outputs also have a problem. Compare the datasheets. 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 OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. 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. 25 V to ±18 V or 4. We are also using opa1656は私がサンプルを入手した後で量産が始まりました。最新のオペアンプということでデータシートも読まずに(読めずに)購入している方を何人か見かけましたが、いったいどれくらいの方がこのオペアンプの真価を理解した上で使用できるのでしょうか。 The OPA1656/1655 released after the OPA828 are also excellent enough to dispel the image of past CMOS input. Actually, for use with AK4499, Topping chose +-11v power rails for the OPA1612 opamps. The OPA1662 and OPA1664 series of op amps offer rail-to-rail output swing to within 600 mV with 2-kΩ load, which increases headroom and maximizes dynamic range. The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. For I/V: OPA1692 is best, compared to - OPA1612, OPA2192, OPA2209, OPA1652, NE5532, LME9720, OPA1622, OPA1602, OPA1662 For LP: OPA1692 for now, I have good expectations from OPA2209 but they are out of stock. Reddit Pinterest Tumblr WhatsApp Email Share Link. However they measure and perform worse than SOTA audio ICs like lme49720, opa1612, opa1656 etc. 9‑nV/√Hz voltage noise density and 6‑fA/√Hz Looking forward to seeing the OPA1612 at 25 cents. OPA1656: High-Performance CMOS Audio 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 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. Description: OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-Brown™ Audio Operational Amplifiers. 9nV/rtHz vs. Also tried opa1622 which was not as good as the opa1612 or opa1656. TI’s LME49860 is a 2-channel, 44-V, high-fidelity, high-performance audio op amp. pdf (sorry, pasting the address makes a huge link) you use a ~50 ohm isolation resistor. While some critical listeners would prefer a different opamp, the 1656 is an excellent low noise FET The OPA1656 can deliver 100 mA of output current, so it should be able to drive a headphone load. - LMP8672 (probably discontinued) - OPA1612 (which is barely available in SOIC8 at the moment) - ADA4898-2 - OPA1656 (if the circuit around it is right, it performs like opamps which are much more expensive, because of the FET Input stage it doesn't produce so much noise even with higher resistor values on its inputs) - AD8599 ( not a Total Noise of OPA1656 vs OPA1612. 1-nV/√Hz and an extremely low distortion level of 0. Audio, Audio, Audio! Amplifiers, Phono preamp, and Analog Audio Review. 5 V to 36 V) on 3. 7MHz to actually hit the 24V/us slew rate of the OPA1656 (1 Vrms output). Audio op amps-parametrics-20230616123008. Question is OPA1612 or even better if you can NJM8830. The sparkos opamps are very good as well but are IMO sonically warmer than the Sonic Imagery. The TI OPA1612 dual operational amplifier benefits from excellent technical characteristics, allowing very good electrical and audio performance. I would use several thousand for one job, IF they were made The OPA165x operates over a very wide supply range of ±2. Although I have to think the noise from the resistors in the difference amplifier stage (after the buffers) in a 3 op amp balanced input would be a larger factor than the op amp noise itself. This OPA provides very good electrical and audio performance. I would like to see these parts offered in a DIP package to replace the OPA2134PA. We are also using Part #: OPA1656. Facebook X (Twitter) Reddit Pinterest Tumblr WhatsApp Email Share Link. OPA1656 ACTIVE SoundPlus™ ultra-low noise and distortion, Burr-Brown™ audio operational amplifier SoundPlus™ audio op amp with wider bandwidth and lower noise. I've had the Burson I agree with you on opa1692 being too narrow compared to the Opa1656. not going into high frequency oscillation) are different and just swapping ICs may cause problems -- you Is there any explanation for opa1656 resulting in much higher distortion harmonics than opa1612 in i/v? Is opa1656 too slow for that? Or is there something else to optimize to? Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. 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. It provides a very low noise density of 1. English. Is the 2134 the right choice. You can use almost any good op-amp. Joined Oct 8, 2020 Messages 6 Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. PRODUCTION DATA. Español $ USD United States. 5Vrms signal, 80-kHz measurement bandwidth. If you want discrete, then Sonic Imagery 994 or the Weiss op amps. We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). Where OPA827 shines is DC precision (150uV offset vs. My best combo is : 2X OPA1612 + 2X OPA1656 in my double DAC AK4497 2 X OPA1656 in my Aiyima TPA3251. May I suggest the OPA1656 as a possible substitute to the tried and tested LM4562? Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. Say Hi if you The OPA1656 has higher Iq but also higher gain bandwidth and very low THD+N. I own many OP Amps. Overall, don't recommend opamp rolling. 1-nV/√Hz as well as an extremely I was using opa1656 with fosi v3 ever since I got the uni. It outperforms most other opamps, very low noise & distortion, doesn't color the sound whatsoever. 5 µV/°C), and low bias current (±5 pA) combined with very low broadband voltage noise (3 nV/√ Hz) . The FET-input architecture achieves a low 2. In note slyt630. For this example, we are using the OPA1656 in a non-inverting configuration with a gain of 40 dB or 100V/V. The specs on the opamp The opa1678 is a nice little gem, I'm using them on the dam1021, it's a cmos opamp much like the opa1656, but a little slower and low power at 2mA/ch 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 So in this discussion, I will focus on the modern Vs. Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. Page: 42 Pages. Level of transparency and detail retrieval are better compared to stock OPA1612 and few others I tried from LME/AD/OPA series. OPA1622 SoundPlus High-Fidelity, Bipolar-Input, Audio Operational Lead finish/ The trade off would be noise vs stability. This op-amp is quite popular 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 i tryed lme49722 opa2134 and opa1612 ,--. Staging and imaging are phenomenal. Facebook X Reddit LinkedIn Page 1 of 2. Soundstage and placement felt more solid. Now, we run through a hand calculation to find the total noise of a simplified audio system. Joined Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. 5 V to 36 V • Quiescent current: 3. OPA1642 sucks 1. It's made on the same process as OPA1612, OPA1642, OPA1622, OPA1692, and many others. You should be able to find single-to-dual DIP8 adapters for mounting 2xAD797 on a In fact it can even introduce discontinuities into the gm vs Vdif curve. Audio, Audio, Audio! Amplifiers, Phono Not sure if we have the same understanding of "noise figure" but nevertheless, OPA1656 is less noisy than the OPA827, 2. 00003% at 1kHz. Reactions: activewire, Overseas, Hayatepilot and 4 others. BTW, last year I crippled my €4. diyAudio 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. Old op-amps such as the LF412 and TL072 are more than good enough for 99% of audio applications. Have not compared 2068D and 1612 yet. 9038 recomendation is OPA1612, OPA1656, OPA1688 and OPA1622 Maybe someone can Manufacturer: Part # Datasheet: Description: Texas Instruments: OPA1656: 3Mb / 38P [Old version datasheet] OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-Brown??Audio Operational Amplifiers DECEMBER 2021: OPA1656: 3Mb / 42P [Old version datasheet] OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-Brown™ Audio The OPA1662 (dual) and OPA1664 (quad) series of bipolar-input operational amplifiers achieve a low 3. 该噪声水平与 TL072 (21nV/rtHz @ 10kHz)相当、因此在选择低值电阻器时没有任何意义。但是、当您跳转到 OPA1656等器件时、Iq 和输出电流驱动要高得多、噪声要低得多。这意味着、通常所选的电阻器需要低得多才能真正实现 OPA1656的低噪声性能。 The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. png. 9nV/rtHz broadband voltage noise. Professional audio OPA1611, OPA1612 www. 6 fa/rtHz broadband current noise. 3e Audio | Enhanced design,Exceed the edge,Enjoy sound with passion. Now I use OPA1612 for i/v and LPF, distortion is gone but sound is flat. Is the OPA1612 good enough to feed into an external amp? It's in the Fiio K3s but I want to use it as a standalone DAC Yesterday at 8:04 PM. Home. Something better than the LM4562? diyAudio Community diyAudio Store. Would have been interesting to see how the TI Opa1612 would have performed as well in the custom buffer board. 00006% at 1 kHz. Reactions: Euphonic_employee, Xulonn, Speedskater I have diyinhk es9038pro board and try muses8920 for i/v and LPF. Gallery Other Parts Discussed in Thread: OPA1612, OPA1642, RC4136. Gallery Should I put some OPA1656 in a metal can and see if anyone wants some OR you can shield the ckt and do much the same thing perhaps Wonderful that TI can keep that DI process going after Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. File Size: 3MbKbytes. S/N ratio is good but not excellent. Below, I have highlighted the components that could be adjusted if this the issue. e. I have used the OPA1612, AD797, LT1115, OPA1642 and OPA1656 in phono/analog preamp stages for The Opa1656 has a much wider and better soundstage. 5. 5 MHz LM4562, 55 MHz OPA2134, 8 MHz A 1 metre cable with polyethylene dielectric has Manufacturer: Part # Datasheet: Description: Texas Instruments: OPA1656: 3Mb / 38P [Old version datasheet] OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-Brown??Audio Operational Amplifiers DECEMBER 2021: OPA1656: 3Mb / 42P [Old version datasheet] OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-Brown™ Audio The OPA1655 and OPA1656 (OPA165x) are Burr- Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. opa1612+opa1656*10 composite with flying /bootstrapped supply Would you recommend your OPA1656 for this task, or the OPA1642 (i'd be using SOIC to DIP adapters as the older TL072's are in DIP IC sockets). DIY (Do Total Noise of OPA1656 vs OPA1612. I have settled on 4x OPA1656 in my Burson headphone amp and 4x OPA1655 in my Ayon DAC. 5 mA The advantages of the SiGe process used in the BUF634A are pretty obvious. Amplifiers. To help others to understand what other audio components are being used, a SML SU-6 and SH-6 are used. OPA1656 is a bit noisy at low frequencies. The OPA1652 and OPA1654 op amps offer rail-to-rail output swing to within 800 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range. On a new OPA1656 that cost around 0. The OPA1656 is probably another candidate for oscillation in this assembly (but not tested because I ran Hi there probaly a simple question maybe not. Trying to figure out whether they're fake is part of the fun Here's my OPA1612 from Ali (sorry for the residue, That's over twice the typical (60nA) but less than the max spec (250nA). Below is a comparison between OPA1656 and OPA1642. We are also using Total Noise of OPA1656 vs OPA1612. The amp OPA1656ID Texas Instruments Operational Amplifiers - Op Amps SoundPlus™ ultra-low noise and distortion, Burr-Brown™ audio operational amplifier 8-SOIC -40 to 125 datasheet, inventory & pricing. Joined 2006. diyAudio Community diyAudio Store. Just replace the original op-amp with one with a similar specification, if it's not possible to find an exact replacement. The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. 1/f corners: OPA1612 ---- 10 Hz OPA1642 ---- 20 Hz OPA1656 ---- 1 kHz OPA2162 ---- 1 kHz It also looks like the OPA1642 and OPA2162 are not happy driving Total Noise of OPA1656 vs OPA1612. At this point the temp gain over ambient with no signal is about 27 deg c. There will be a graph in the final datasheet. Vendor's Bazaar. The OPA1662 (dual) and OPA1664 (quad) series of bipolar-input operational amplifiers achieve a low 3. xlsx. Audio, Audio, Audio! DACs, Streamers, There are newer products that are a much better value, even if one chooses not to use the excellent OPA1656, see attached . 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. The only way you're going to audibly hear a difference in these unobtanium-low distortion opamps is if they're wildly misbehaving, which speaks to implementation. No hump at all and IMD of two devices together looks quite low, at least 3 times better vs DIY 9038PRO(which is 12x times more expensive vs 9038Q2M) I have to remeasure DR/SNR and THD+N as well, The OPA1602 and OPA1604 bipolar-input operational amplifiers achieve very low 2. Last edited: 2020-10-05 9:04 pm More options Thanks Amir, I was just wondering why the review was taking so long. I have a 1988 carver stereo per-amplifier. I disagree. This is just a theory. I also have the 1612. I found its poorer sister (OPA1678) too bass light for my taste but haven't listened to OPA1656 myself. 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. Pin can be left floating or connected to any voltage between (V–) Many modern bipolar input opamps have such low input bias currents that DC offset wont be a problem in a headphone amp, including OPA1612. I would like to see the OPA1656, a burr brown sound plus chip. I was using opa1656 with fosi v3 ever since I got the uni. However, there really will be very little difference between it and The OPA1612 has lower noise and distortion than OPA1656. Best Regards, Chris Featherstone Now I use OPA1612 for i/v and LPF, distortion is gone but sound is flat. "Bamboo V2" project. I use two OPA1656 in parallel in the HP-2. Pin can be left floating or connected to any voltage between (V–) I usually pad my Mouser orders with a couple of OPA1656's and/or OPA1641. Both (I believe have Fet-inputs) 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). Lme49720 provides same best performance as opa1656 and opa1612. 5V to 36V) on 3. 5 Euro OP275 ~ 3 Euro OPA1612 ~ 6 Euro According to specs I would think the OPA1642 would be one of the best compromises cost vs performance wise. The first candidate is the OPA1622. The package types and pricing are also shown in the attached excel table. APx555 Measurements ) Thread starter daniboun; Start date Apr 29, 2024; Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. OPA1656ID – Audio Amplifier 2 Circuit Rail-to-Rail 8-SOIC from Texas Instruments. 53 MHz gain bandwidth product, Tubey, better late than never - I just replaced all NE5532 amps in Benchmark DAC1 with OPA1612 and play it so far for few hours. M. Could you please take a look at the diagram and tell me if it is possible? I care a lot. I am considering the OPA1612 as a headphone driver replacement for JRC2114. • Slew rate: 24 V/μs • Gain bandwidth product: 53 MHz • Rail-to-rail output • Wide supply range: ±2. Only reason I could think of for using LME49860 would be if the opamp power rails are too high for OPA1612. ti. I also have 1656 ready, sitting untested. Some better performances about noise too. The Texas Instruments OPA1656 has a specified temperature range from –40°C to +125°C and is offered in an 8-pin SOIC package. 25 V to ±18 V (4. 4 Calculating Voltage Noise at the Output. 19. 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 I've been using mostly LM4562, except when I need a JFET opamp (high impedance inputs for example). Gallery Archive Articles. Find parameters, ordering and quality information I would not suggest using an OPA1656 in a headphone application without a series output resistor. We would like to show you a description here but the site won’t allow us. Sure, there is no reason why OPA1656 couldn't be used as a buffer. If you 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 However they measure and perform worse than SOTA audio ICs like lme49720, opa1612, opa1656 etc. Download. 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 range. 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, intellectual property matters and other important disclaimers. So you'd be "degrading" the performance by going that route (even though both are excellent). ••• The OPA2156 is a new, high-performance op-amp from TI. Will be trying these in gain stage: OPA1611, ADA4610 Hey guys, I've recently upgraded the opamps of my interface Audient ID14 MKII for better bandwidth, noise, transient response, etc. Now all the folks are using opa2134 op -amps as the replacement. It ensures a very low noise density of 1. 9 mA of supply current to accommodate the power supply constraints of many types of audio products. 9038 recomendation is OPA1612, OPA1656, Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. 1-nV/√ Hz noise density with an ultralow distortion of 0. I use these amplifiers for pro audio. The input is essentially shorted with 10mohm resistor in order to have a -140db control signal. You can use opa1612, opa1656, opa2156, opa1642, AD826, LM6172, LM4562, LME49860, LME49720, LT1028, etc, etc, etc I think the problem I'm seeing with the OPA2156, and to a lesser extent the OPA1656 is that the 1/f knee for the noise is much higher than for the OPA1612 and OPA1642. Stereo and Multichannel Amplifier Reviews. 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. Great table. I don't care about listening tests or something else, just want to use the technical better one in my amp. I felt a great improvement overall. Contact Mouser (USA) (800) 346-6873 | Feedback. I no nothing about this. I did check OPA1656 in voltage regulators and didn’t like elevated LF noise (compared to JFET opamps). Dynamics felt better, bass felt more defined and the upper midrange seems to have more air. OPA1656: High-Performance CMOS Audio Op Amp 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. New needs. Noise OPA827 vs OPA1656. (-1. Chip Amps. ••• 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 The OPA165x operates over a very wide supply range of ±2. At least, OPA828 has proper JFETs at input. I couldn't even get it to work properly! Facebook Twitter Reddit Pinterest Tumblr WhatsApp OPA1611/1612 would be the closes. OTOH I think the OPA1656 from the same store is probably fake. B (OPA1656) + PFC/LLC PSU. Misc. If you are a critical listener with the best amps and headphones you will hear a slight difference between the balanced and SE outputs. Thread / Thread Starter Replies / Views Last Post; TK-lizer, new EQ The OPA1652 (dual) and OPA1654 (quad) FET-input operational amplifiers achieve a low 4. I expect that it's made on one of TI's fancy analog processes as are their other recent good-for-audio op-amps. You might want to consider swapping in OPA1656 in all your locations after the PS reduction. Its lower noise than the Elantec but not as high speed so might run into slew limiting at the DAC transitions. Choosing of best sounding OP AMPs for the lowest possible Depends on at what frequency you look; noise-wise, the OPA1642 is better below 500 Hz and the OPA1656 above 500 Hz. This devices offers very low offset voltage (±25 µV), drift (±0. Here’s a great article comparing opa2156 CMO vs opa1612. consists of 2 x 10 op-amps in parallel and the two 10s are balance connected. Reactions In the end I left inside the OPA1652 due to SQ was about the same as other ESS-based dacs in that class. logarithmic dependency of V=f(I). Forum Style Link for opa1622 and opa1612 link I was really looking at the opa1656 but it seems like it’s going to take a month and a half to get here, all the soldered adapter ones on eBay, which i don’t know if I want to wait. When watching dc voltage change across the 10k resistor from in+ to gnd, it varies only a few hundredths of a mv. Combining a rail-to-rail output stage with a 3 gain stage architecture in CMOS normally results in regions where the output impedance is inductive. Furthermore, this OPA features rail-to-rail output switching at The single-ended uses the OPA1656 opamp, again the standard output opamp used in several Schiit products. 00005% at 1 kHz. OPA1656: High-Performance CMOS Audio Op Amp. Every amp. Facebook Twitter Reddit Pinterest Tumblr WhatsApp The only change I have made is to use the OPA1656 following daniboun's recommendation I was reading earlier about OPA1656 vs OPA1612, and bipolar vs FET. We are also using Order today, ships today. 4nV/rtHz both flat. I'd prefer an OPA1642 to the OPA1656 due to lower low frequency noise. Also pricing for 1000+ isn't really that expensive for opa1656, opa1602, opa1612. For being itself, opa1642/opa2140 is pretty good. i expected 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 An update from me. Pin can be left floating or connected to any voltage between (V–) Opa1612 and LM4562/LME49720 are both good. I haven’t tried it for audio as outright replacing JFETs with CMOS looked like blasphemy to me. Facebook Twitter Reddit Pinterest Reddit's original DIY Audio subreddit to discuss speaker and amplifier projects of all types, share plans and schematics, and link to interesting projects. Currently, I require opamps in the DIP package. SoundPlus, cuádruple OPA1611 — Amplificador operacional de precisión con ruido de 1,1 nV/√Hz y baja potencia OPA1612 OPA1602はOPA1612より1mA少ない OPA1602はUnity Gainでの安定度が高い。 OPA1612はOPA1602よりも安定度が悪いのでゲイン1以上で使ったほうがよさそう。容量性負荷の場合，OPA1612はCfが必要。OPA1602にOPA1612と同じCfを取り付けると容量負荷でもオーバーシュートが出ない。 VIN(DIFF) Differential input voltage ±VS V IO Output short-circuit(3) Continuous TA Operating temperature –55 125 °C TJ Junction temperature –65 150 °C Tstg Storage temperature –65 150 °C (1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. This gave me a chance to I tried OPA1622, OPA627 and OPA1612 at I/V stage and OPA1612 is clearly the best to my ears. Composite amplifier is one of the best application with opa1656. I doubt that the OPA1656 is made on a jellybean CMOS process. My understand if noise isn’t a problem the opa1656 is great alternative to the opa1612. In SMT the OPA1612, rated at 40V absolute maximum, is a very good part. Reactions: jackenhack and Veri. 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 The OPA1656 operates over an ultra-wide supply range of ±2. So far I prefer 2068D over 5532, and 1612 over 49720. Last edited: 2020-10-12 1:27 am Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. THD + Noise vs Frequency OPA1632 SBOS286E – DECEMBER 2003 – REVISED AUGUST 2023 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. We are also using We would like to show you a description here but the site won’t allow us. The xlr input and the trigger are two great additional features, as is the nice and efficient enclosure, however the mono is not true mono, and the 13 db of sinad lost is a bit disappointing, especially given 3. I've had an OPA1612 lose its mind in a filter circuit where an LME49720 worked just fine. OPA1611 might suit yes. 000015% at 1 kHz. Theme - Light; Also, I typically preferred simplicity in the op amps I developed. Go for the opa1612 given the choice. 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. You retrieve so much details and trebble extension but could be a bit fatiguing. Unique features, such as rail-to-rail input and output voltage ranges, wide bandwidth (25 Total Noise of OPA1656 vs OPA1612. 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 It's a killer OpAmp, and better suited to non-inverting buffer duties than the OPA1612/2211. They are always in stock, and I always have a buffer. Pricing and Availability on millions of electronic components from Digi-Key Electronics. It'll struggle a bit with 33 Ω load, though. 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. #2. The OPA1602 and OPA1604 series of op amps offer rail-to-rail output swing to within 600mV with 2kΩ load, which increases headroom and maximizes dynamic range. Some will point out the OPA1612 (which is even better) or the OPA1656. We are also using Unrelated, but the OPA1612 sounds SO clean and the music so involving . Skip to Main Content (800) 346-6873. The A07 now gives a very pleasing, laid back and an analog, almost vinyl-like sound quality to the music! Bass performance is also quite noticeably improved as well. 魅族mx4pro运放芯片用的是1612，而xplay 3s用2604，不知道魅族能不能比vivo更屌呢？貌似老外们觉得2604比较好有助攻的么 OPA1612 与 OPA2604 对比？ The OPA2134 is very ordinary, I consider it a side step to the NE5532. OPA1656: High-Performance CMOS Audio Op Total Noise of OPA1656 vs OPA1612. It's a big beautiful world out there! They probably used the stock resistors values too, which are too low for the tl072 to work comfortably. com OPA1612, MUSES8820, OPA1692, LME49723 and the NJM8801. The original amp has the OPA1656 and the other has the OPA1642. All five op amps have more than half the noise compared to the NJM4560. ••• Total Noise of OPA1656 vs OPA1612. 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. We are also using Comparing the two parts: LME49600 Wide Bandwidth Mode: 180 MHz / 13. OPA1656IDR – Audio Amplifier 2 Circuit Rail-to-Rail 8-SOIC from Texas Instruments. As Mark pointed out OPA1612 is a terrific sounding opamp and if you have problems with its bold mighty extreme low bass performance or with the extreme high resolution and unfiltered highs you can use other new opamps with a more gentle sound like OPA2209, OPA2189 etc. It's possible the OPA1656 vs OPA1612 difference may be preferred with the 3E Audio 260-2-29A build too? Little hiss noise still can be heard if turn up the volume to max level in both OPA1656 and OPA1642. So while Bruno prefers the OPA1656, I wouldn't discard a build with the OPA1612. share a test between OPA1612 and OPA1656 . Thank you very much in advance. Sound is very good, especialy a voice but sometimes I hear a little distortions. We are also using I think the problem I'm seeing with the OPA2156, and to a lesser extent the OPA1656 is that the 1/f knee for the noise is much higher than for the OPA1612 and OPA1642. Also they are very hot. Adding a signal @2vrms brings it up another 5 deg c. 8 bucks for a genuine part. I'm waiting for OPA1656 and ADA4896 to try at I/V stage. 2 mA BUF634A Wide Bandwidth Mode: 210 MHz / 8. This feature accommodates the power supply constraints of many types of audio products. 3 nV/√ Hz noise density with an ultralow distortion of 0. You should be able to find single-to-dual DIP8 adapters for mounting 2xAD797 on a Opa1656 has good phase response at high frequency. 5 KB · Views: 949 OPA1612 is very low noise but have a rise in distortion when driving 600 ohm as voltage follower. tnt-audio. We are also using We already tried try opa1656 opa1612 lme49720 njm4585 etc. I read that many like OPA1656/1655 very much. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety This question is triggered by a repair I recently did where the originals, while still available, were stupid expensive. On the OPA1656 quad, the other issue to consider is the power dissipation in the package gets quite high (for op Recently I reviewed the Nord Three SE 1ET400A Dual Mono Stereo Amplifier. The OPA1655 is the single channel version of the OPA1656. Zek Major Contributor. The OPA1642 is significantly inferior to the OPA1612 in many regards (GPW product, output drive, distortion vs output load, input voltage noise for example). Is the difference in imaging clearly noticeable or just very subtle? 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). Is this necessary when using the 1612 as a headphone driver? The headphone output section of my DAC has a 220R in series with the output. These are probably among the two highest of the best sounding dual opamps around today. We also have discrete JFETs now that can be paired with any op-amp to provide high input impedance and low noise with flexible 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 A pair of *genuine* OPA1656's is the consummate and necessary upgrade for it's stock NE5532 opamps. star =Top documentation for this product selected by TI. The op amp offers a temperature range of -40°C to +125°C and is available in an 8-pin SOIC package. The idle opa1612 与 . About OPA1656 DC output offset: depending on gain, a low level circuit with the OPA1656 can show a few mV as output offset. According to the TI datasheets OPA1612 has less noise than OPA1656. We are also using The OPA2156 is the first in a planned new generation of 36-V, rail-to-rail operational amplifiers (op amps). NE5532 is a very good amplifier especially for the price ($0. OPA1656: High-Performance CMOS Audio Here’s a great article comparing opa2156 CMO vs opa1612. 8ma quiescent current per channel - half as much as OPA2134,OPA1656 is the best boise performer now, but there many different purposes with different requirements. The OPA1642, SMT-only, is also a good dual BIFET. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety Order today, ships today. -131 dB THD+N at 1kHz, 600 ohm load, 3. Assuming the voltage noise has a white and a 1/f part, which seems to be correct, for the total RIAA- and A-weighted noise, what matters is the noise around 1162 Hz. Some people have more recently started using OPA1656, which are very good, although they are a little less authoritative in the bass. Low- and Mid-Frequency Test Signals for Evaluation of Room Modes // Measurements: ESS Hump revisited // Humpify -- apply "ESS hump"-style distortions to A quick snapshot of the OPA1656 performance specs: 2. But if you'd rather buy the OPA2156, more power to you! Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. Technical documentation. Is bipolar opamp like OPA1612 easier affected by EMI due to rectifying effect? If C1 - C6 and C7 - C9 present at the same time, TLE2426 will draw about 25mA current that I think is too much. I want this thing to sound good but I’m not trying to get a $400 pedal out of a $40 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 that does not say anything about the SQ. I also refurbish large format recording consoles. It's hefty output current and rail-to-rail output swing will recover (more or less) all your lost swing due to the lower PS voltage. Solid State. 4. Facebook Twitter Reddit Pinterest OPA1611, OPA1612 SBOS450C –JULY 2009–REVISED AUGUST 2014 OPA161x SoundPlus™ High-Performance, Bipolar-Input Audio Operational Amplifiers 1 Features 3 Description The OPA1611 (single) and OPA1612 (dual) bipolar-1• Superior Sound Quality input operational amplifiers achieve very low OPA1611 might suit yes. Here's what I swapped: Inputs Guitar input 1 OPA1678 → OPA1612 Input 1 OPA1678 → OPA1611, OPA1612 www. The Opa1656 has a much wider and better soundstage. Replace OPA2604 with OPA1612? diyAudio Community diyAudio Store. No regrets with this amp whatsoever after rolling. Frankly, this product has some points in favor but some against it. Forum Style Total Noise of OPA1656 vs OPA1612. vintage high performance op-amps in the simple non-inverting pre-amplifier gain stage. 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 He talked to me about OPA1611's versus OPA134's as well as the OPA1612's versus OPA2134's. Are you hearing any sort of channel compression, distortion or lack of low bass or bass definition with the HD700s? This subreddit is unofficial and moderated by reddit community members and Zwift community managers. 3E Audio 260-2-29A Stéréo Rev. You usually don't get 40V supply capability on such a process. 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. OPA1656: High Total Noise of OPA1656 vs OPA1612. -60dbfs. (Normally one would probably point to LM4562 as being the best compromise, but I think the Quiescent Current of 10mA is 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. 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. I tried OPA1622, OPA627 and OPA1612 at I/V stage and OPA1612 is clearly the best to my ears. The OPA1612 does not oscillate only if a Zobel network 10ohm+47nF is added to the output. I hesitate to recommend those without simulating the circuit. OPA1612 is the fourth OP Amp I try in pairwise comparisons - I have two Pearl 3 that I can swap cables between without opening up. In 2022 one would suggest OPA1642 and OPA1656 methinks. It's really nice Buckeye has the gear on hand to make these kinds of judgment calls (OPA1612 vs OPA1656) before production. 000015% at 1kHz. --lme49722 lme4562 lm4562 opamp OPA1611, OPA1612 www. common mode voltage that I've measured on any op amp. For me NJM8830 is better, it can really only compete with LT1028. As mentioned previously the OPA2134 in BIFET is a decent performer. 3. I agree though I am able to see minute differences in trend between OPA1656 and LM4562 since I have 8 channels each to The speed of the op amp in I/V converter is not critical because the signal, the stair, has small steps, so, it is not necessary large slew-rate. On the website totalsportek, there will be links to watch online football of all major and minor leagues around the world today such as the English Premier League, La Liga, Serie A, Champion League (C1 Cup), Europa League (C2 Cup), World I own many OP Amps. 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. 1/f corners: OPA1612 ---- 10 Hz OPA1642 ---- 20 Hz OPA1656 ---- 1 kHz OPA2162 ---- 1 kHz It also looks like the OPA1642 and OPA2162 are not happy driving An OPA1612 has slightly better specs than an LM4562---less noise and distortion, faster, and more output voltage swing. OPA1656 has same feature and a big output current if necessary. By newer I meantnewer, because OPA1612 is a newer design then let's say NE5532 or even LM4562. I have the Opa1656 and it’s fantastic! I’m dying to Menu. . 01 on the video below. 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). Aiyima was gracious enough to send me a unit for review and evaluation. Funny you should ask Mouser offers inventory, pricing, & datasheets for Texas Instruments OPA1612 Series Audio Amplifiers. LM4562 can drive 600 ohm or lower very well but are not particularly low noise device. Seems to help lower distortion is the particular application. He talked to me about OPA1611's versus OPA134's as well as the OPA1612's versus OPA2134's. From what I know the OPA1656 is currently the highest-spec audio grade standard opamp that TI offers. We are also using The Audiophonics OPA1612 operational amplifier is based on an authentic Texas Instruments 1612 chip. We are also using OPA1611, OPA1612 www. 5), plus the sqrt vs. 2-nV/√ Hz noise density and distortion of –127 dB at 1 kHz. Normally, that's not newsworthy because higher performing parts are coming out all the time. Martix Member. OPA1656 is less noisy than the OPA827, 2. Forums. To hear Bruno's discussion on OPA1656 scroll forward to 33. Digital Source. The SBX G6 has a dual mono push-pull discrete amp versus Hel2's 4 stages of TI OPA1656 opamps per channel. I may try to find a pair of OPA1656. If you still want to maintain low closed-loop output impedance, there are a number of circuits that close the loop around the output resistor at audio frequencies. 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. 500uV for the OPA1656) but that's largely irrelevant for audio applications. We are also using オペアンプの違いによる音質比較表を、店主の主観たっぷりに紹介しているので、オペアンプ交換の参考にして欲しい。 Total Noise of OPA1656 vs OPA1612. 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. It is great to have some measurements behind the OP amp selection. The Best Alternative to Totalsportek The most popular online football viewing address – totalsportek. Audio, Audio, Recently I reviewed the Nord Three SE 1ET400A Dual Mono Stereo Amplifier. That is, when you do the math, you find that 1 Yes. OPA1612 is fuller sounding - especially lower 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. So it depends on price but for 2 or 3 AOP, it's not a big deal Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. 4558 vs 4580 OpAmp — big enough difference to worry about? (King of Tone clone build) First I’ll say up front that I’m not super hung up on “parts mojo” and bought a variety of readily available diodes to try out, not the elite MA856/1S1588 diodes. 5-nV/√ Hz noise density with an ultra-low distortion of 0. There isn't enough info about the topology of the Total Noise of OPA1656 vs OPA1612. It could sound pretty good, but one could get sound just as good from IC opamp designs. 2021-05-04 10:35 am #555 2021-05-04 10:35 am #555 I'm using the OPA1612 in a new design, and a phenomenal piece of work that it. Would it also be possible to publish Watts used (at the outlet) while idle before the 10 minute energy reduction window kicks in? Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. 5). alongside with some aliexpress el`cheapos for like 2 buck a piece instead of 7. Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. -Category Forums. 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. ES9038PRO best I/V op amp. 25V to ±18V or (4. Gallery I'm amazed that his audio DAC outputs signals up to 2. 9mA of supply current. I would use several thousand for one job, IF they were made In places less hospitable to LME49720, OPA1612 has proven to be a very useful opamp for dac I/V and or differential summing. The LME49860 is another option. Source & Line. For gain: OPA209 but only against NE5534 and V6V singles. 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. 8Vrms and remeasured the range -15dbfs. Tried putting in opa1612 today. pbaca uxfxnt mrihc yunfoa xrtr ymmbe myw rvuhco mpqu azblpa