Opa1656 vs opa1612 reddit forum. 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. 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. com) I have tested the The AIYIMA Tilear Rev 2. Sep 17, 2023 · I was using opa1656 with fosi v3 ever since I got the uni. I would tend to use the OPA1642 for buffering, filtering and EQ. 4 nV/rthz. Now, we run through a hand calculation to find the total noise of a simplified audio Jan 19, 2023 · - 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 very fast opamp but therefore it is easy to get it stable Jun 5, 2023 · After working with some OPA1612 on my recent Topping PA5 D01 Module replacement project (at ASR), a friend sent me a few OPA1612 opamps he ordered when they were in stock since i couldnt get them anywhere. LME49720 vs OPA1612 vs Muses02. Jan 3, 2023 · Sennheiser Momentum, Blon BL03, Brainwavz m2/m5, Liam Daan Swan, Rock Zircon, Tanchjim Tanya, NiceHCK DB3, KZ EDX/DQ6/ZS10 pro/ZEX, CCA C10/C12/NRA, TRN MT1/V90, QKZ VK4, CCZ Melody/Emerald, Kbear KB04, Final E1000/E4000, Smabat NCO2, Jade Audio EA1, Nicehck DB3, Tianderehne TD06, Magaosi K3 pro, Shozy Form 1. 01 on the video below. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety Jul 4, 2009 · Here’s a great article comparing opa2156 CMO vs opa1612. Currently, I require opamps in the DIP package. The Texas Instruments OPA1656 has a specified temperature range from –40°C to +125°C and is offered in an 8-pin SOIC package. Thanks in advance. Every amp. Dear all, aiming to keep THD+N figures constant over the audio frequency range. common mode voltage that I've measured on any op amp. He gives strong recommendations for some applications and also caveats about ill-informed op amp rolling. Below, I have highlighted the components that could be adjusted if this the issue. 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. I prefered the sound of my DAC with the OPA1656's hands down even over the discrete op-amps. 5V to 36V) on 3. Low output current would mean the transimpedance gain of the I/V circuit will be high, and the input current noise of the op amp will be a significant contributor. Apr 30, 2021 · Normally you'd regularily search in the manufacturers new product listings first for any new interesting products. Several reference are used on forum. I looked at the Slew Rate as my main Apr 10, 2019 · I have interested in low ESR Electrolytic Capacitors to power the Opa1612. Other cheap ones on my radar - OPA2134PA, OPA1612, LM4562NA. Description: Ultra-low-noise, low-distortion, FET-input, Burr-Brown audio operational amplifier. consists of 2 x 10 op-amps in parallel and the two 10s are balance connected. 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. Jul 5, 2006 · SQ was about the same as other ESS-based dacs in that class. OPA1656 May 15, 2022 · Site Site Announcements Forum Problems Facebook Twitter Reddit Pinterest Tumblr Amplifiers. My main attraction to them is a higher ripple current in the AC to “ power” the board onward as the opa1612 only requires low quiescent current of 3. 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. 1 with great caps and some mod (OPA1656 / inductors update) sounds really good too. alongside with some aliexpress el`cheapos for like 2 buck a piece instead of 7. Not targeting Mouser here , most of the others are worse. Mar 17, 2019 · OPA1656 rolling I tried in all cases to bypass the rails with a 0. Joined Dec 21, 2020 Messages 1,924 (OPA1612 vs OPA1656) before production. 8 bucks for a genuine part. Download. It outperforms most other opamps, very low noise & distortion, doesn't color the sound whatsoever. Page: 42 Pages. Two identical gain 11 amplifiers were tested. OPA1656 is a bit noisy at low frequencies. 4nV/rtHz both flat. Dynamics felt better, bass felt more defined and the upper midrange seems to have more air. Mar 17, 2019 · Benefit is lower dc offset and less distortion also high open loop gain also superior stability. The Opa1612 is the audio version so they made the specs slightly worse. 7 pA/rthz) will multiply with the pickup resistance (varies quite a bit, say typical is 10 kOhm) to become the Apr 8, 2021 · LEAF Dual 9038Q2M VS Gustard X16 pictures inside Application Report Understanding Op Amp Noise in Audio Circuits Tyler Noyes, Tamara Alani ABSTRACT One of the greatest design challenges when building a high fidelity audio circuit is how to reduce the total system Application Report Understanding Op Amp Noise in Audio Circuits Tyler Noyes, Tamara Alani ABSTRACT One of the greatest design challenges when building a high fidelity audio circuit is how to reduce the total system Mar 17, 2019 · blue spectrum - 2 x 8 parallel OPA1642 , green spectrum - 2 x 2 parallel OPA1642 orange spectrum - 2 x 8 parallel OPA1656 , brown spectrum - 2 x 2 parallel OPA1656 Based on these measurements I expect the noise of a single OPA1656 to be 39nV/rtHz at 10Hz. i expected them to put some AS the input stage of OPA1612 and INA1620 are constructed with the bipolar junction transistor (BJT), the input bias current and input current noise with BJT input are generally much higher than JFET (i. Application Report Understanding Op Amp Noise in Audio Circuits Tyler Noyes, Tamara Alani ABSTRACT One of the greatest design challenges when building a high fidelity audio circuit is how to reduce the total system Mar 17, 2019 · To start, OPA1656 is definitely not a replacement for OPA1622, the two parts were designed for with very different applications in mind. Sep 25, 2019 · The OPA165x operates over a very wide supply range of ±2. I don't care about listening tests or something else, just want to use the technical better one in my amp. チョイラボその8 - Choi LABO - FC2 Jul 3, 2019 · Forum Donor. Composite amplifier is one of the best application with opa1656. Regarding the tone stack, if there is enough gain in the front-end, the input-referred noise may not be impacted by the resistances. 1 is now ready with OPA1656 in DIP8 socket. This feature accommodates the power supply constraints of many types of audio products. Total Noise of OPA1656 vs OPA1612. In all, I will say the changes are noticeable, but not earth shattering. Products Precision op amps (Vos<1mV) INA1620 — High-fidelity audio operational amplifier with integrated thin-film resistors and EMI filtering OPA130 — Single, 1-MHz, 20-pA bias current, 530-µA power, FET operational amplifier OPA131 — Single, 4-MHz, 50-pA bias current, 750-µA power, FET operational amplifier OPA140 — Single-channel, 11-MHz, low-noise 36-V JFET precision operational The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. lib SYMATTR Value2 OPA1656 SYMATTR Description TI/BB Audio FET Opamp to get the same symbols as the ordenary Opamp 4. Mar 5, 2018 · I read on several forum the advantage to use specific AOP for the final stage of DAC or Amplifier. 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 · For a DAC chip with a low output current, I would suggest op amps with FET type inputs, either JFETs or CMOS. The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. 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. I’m going to solder the IC to a soic to dip adapter then plug it into the the amp. Transients are stronger, both rimshots of snare drum and big-band trumpets. 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. I repeated measurements a few times, using sets of resistors: 1). It's a virtually unknown chip as when you search on Digi-Key it doesn't come up as soundplus. OPA1656 - Better imaging / separation of instruments. Now, we run through a hand calculation to find the total noise of a simplified audio 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? Facebook Reddit Jan 10, 2016 · Forums. 9 v/µSec for a OPA1656 at isn't really that expensive for opa1656, opa1602, opa1612. I have diyinhk es9038pro board and try muses8920 for i/v and LPF. . 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 Feb 11, 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). 9mA of supply current. 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. 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. com. 25V to ±18V or (4. File Size: 3MbKbytes. Nov 28, 2022 · Part Number: OPA1656 Other Parts Discussed in Thread: OPA192 , , OPA551 , OPA547 , OPA593 Dear members: For a measuring circuit I need an operational with output TI E2E support forums Search Jun 8, 2023 · Some members in the Pass Labs forum section used my design in their First Watt clones with the same conclusion. 9nV/rtHz vs. I am planning to replace the NE5532 in my Burson Funk with the OPA1656. Copied the given . 5 metre cable at 33. PRODUCTION DATA. Feb 17, 2023 · Hello, guys. Added a new OPA1656. Dec 31, 2021 · Depends on at what frequency you look; noise-wise, the OPA1642 is better below 500 Hz and the OPA1656 above 500 Hz. 9 mA of supply current to accommodate the power supply constraints of many types of audio products. 6 mA but I know I’m in the Op amp thread so I don’t want to take the thread off topic. It has the most stable input capacitance vs. The NE5532 is used everywhere as its sound profile is designed to catch people's attention. ) and MOSFET(i. I would have no problem staying with them, but I like tinkering. Two cases were evalutated – in a Mar 17, 2019 · So to put 1 in a baggie exactly like the OPA1656 , they charge 15,69 $ !! , to put 10 in a baggie : 130 $ !!! TI does all the work and Mouser leaches more profit off from it. - Page 2 Jul 4, 2009 · I was also looking at OPA1612, AD8599, AD825, and OPA627. It could sound pretty good, but one could get sound just as good from IC opamp designs. Feb 11, 2021 · I agree about the OPA1612 for gain. Sound is very good, especialy a voice but sometimes I hear a little distortions. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety 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. Also LME49860NA but I can't find them anymore. Joined Feb 24, 2016 Messages FYI I'm about to order an Audiophonics HPA-S400ET with OPA1612 instead of OP275. Since I am not interested in the V6 Vivid Dual that it comes with. Sep 27, 2019 · The OPA1656 operates over an ultra-wide supply range of ±2. May 23, 2018 · Opa1656 and opa1612 without tweaking have better performance than almost any discrete solution. Good op-amps try not to add their own character to the sound, and the V5i sticks to that. 3 MHz. This is just a theory. May 9, 2023 · Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. Dec 7, 2023 · Forum Donor. I use two OPA1656 in parallel in the HP-2. Feb 29, 2016 · In a recent Bruno Putzeys video interview he shared a preference for the OPA1656 with the Purifi amp. 1 with the following OP amps : OPA1612 OPA627 OPA1656 Burson Audio V5I genuine Dec 6, 2018 · I don't think you can "get into it" here, it quickly degrades to psychoacoustics and audiophoolery compared to science. 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. Application Report Understanding Op Amp Noise in Audio Circuits Tyler Noyes, Tamara Alani ABSTRACT One of the greatest design challenges when building a high fidelity audio circuit is how to reduce the total system The different players sounded different. 7 of OPA1612 datasheet) Mar 17, 2019 · We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). I ended up staying with this one. It offers exceptional performance in almost any audio application. (or the 2156) The opamp has good phase margin and seems quite tolerant of sub-optimal layout. The output swing for Aol should be considered as it is different between the two devices. The diyaudio forum might be better suited for posing the question. Sep 14, 2021 · The LM4562 is an exception, but otherwise it are the fast op-amps that JRA has trouble with: Misbehaving: OPA1656, gain-bandwidth product 53 MHz LME49990, 110 MHz OPA1612, 40 MHz Behaving well: OPA2604, 20 MHz OPA627, 16 MHz OPA2107, 4. (See diyaudio. 25 V to ±18 V (4. 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. Dual customzied solution will give unmeasurable distortion (possibly -180db). Also they are very hot. 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! 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. 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. 1, Ibasso IT00, Moondrop Aria, AZ Sound Heart Mirror, Celeste Gumiho, TRI I3 Pro Apr 25, 2024 · Part Number: OPA1642 Other Parts Discussed in Thread: TLE2426, , OPA1656, JFE150, JFE2140, OPA1612, LME49720, OPA891 Dear TI E2E support, Hi there, Our team made a prototype of a phono-stage amplifier (pic. tnt-audio. One difference between the 1612 vs 1656 is the 1656 has higher output current availability. Ha ha it's funny because I'm a wide and far reached detailed and accurate fanboy and some people find too many details to be annoying. I had no oscillations or instability with the OPA1656. You can dig on the Internet and find modern op-amp test results, but it quickly crosses over into sonic character and subjective opinion. 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 600 ohms, but the Feb 28, 2021 · The best sounding op amps for audio work. It's a killer OpAmp, and better suited to non-inverting buffer duties than the OPA1612/2211 Jan 27, 2024 · OPA1656 instead of OPA1612 by thuanth » January 27th, 2024, 2:57 pm I'm thinking of building a couple of a24 boards and want to try T. Are there any other Nov 30, 2021 · Stability should be considered especially with the wider bandwidth of the OPA1656. 0000x distortion and so on). Page: 23 Pages. I suggest the following reference - 994Enh Discret OpAmp SONIC IMAGERY LABS - SPARKOS LABS SS3606 - AOP 1612 - LM4562 Mar 17, 2019 · I purchased 10 OPA1656's. My understand if noise isn’t a problem the opa1656 is great alternative to the opa1612. Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. 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. Mar 17, 2019 · It has the most stable input capacitance vs. Does anybody Jul 4, 2009 · The Opamp thread | Page 439 | Headphone Reviews and Dec 28, 2018 · I would like to see the OPA1656, a burr brown sound plus chip. It's possible the OPA1656 vs OPA1612 difference may be preferred with the 3E Audio 260-2-29A build too? Dec 28, 2017 · There are some things to watch out for when swapping op amps. OPA1622 was targeted specifically for headphone applications, while OPA1656 is a more general purpose device meant to address analog signal processing in line level audio circuits. I also refurbish large format recording consoles. OPA1612 is fuller sounding - especially lower midrange but also more dynamic. 10 Ohm - 10 kOhm, 2). 5 V to 36 V) on 3. Feb 11, 2021 · 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. OPA1642, OPA828, etc. 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). Jul 4, 2009 · Level of transparency and detail retrieval are better compared to stock OPA1612 and few others I tried from LME/AD/OPA series. 3V inside of each supply. Mar 17, 2019 · OPA1656 is less noisy than the OPA827, 2. 1 kOhm - 1 MOhm 4). asy using the ADA4627 as a template 3. IMHO the outcome was mostly decided by how the opamps responded to the RF coming out of the dac chip. Audio, Audio, Audio! We already tried try opa1656 opa1612 lme49720 njm4585 etc. Now I use OPA1612 for i/v and LPF, distortion is gone but sound is flat. 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. Soundstage and placement felt more solid. NE5532 is a very good amplifier especially for the price ($0. Mar 17, 2019 · The OPA1641 would be slightly better. 4 Calculating Voltage Noise at the Output. I felt a great improvement overall. CMRR is not a big issue. Other Parts Discussed in Thread: OPA1612, OPA1642, RC4136 I use these amplifiers for pro audio. The input is essentially shorted with 10mohm resistor in order to have a -140db control signal. 5). 9038 recomendation is OPA1612, OPA1656 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. File Size: 611Kbytes. 1F X7R on the backside with the shortest possible lead length. The Vendor's Bazaar forum is for commercial offers and transactions. 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). Great alternative to TPA325X / Hypex Ncore (this is subjective ) is the double Mono Merus amp. com with a TI insider involved. e. The NE5532 is perfectly fine. My first set of separate OpAmps, ushering my foray into the brave new world of OpAmmetryLoL Dry, crisp, analytical and non-intrusive (as compared to the bold NE5532) is what I would describe this opamp as. --lme49722 lme4562 lm4562 opamp is very good sound ,higher ratings than opa2134 -but not as Mar 17, 2019 · Hi John Yes, did it my way… 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 Oct 12, 2020 · The AIYIMA Tilear Rev 2. 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. OPA1656, OPA1678, etc. I've had the Burson V5i, and the V6vivid and I have no space to put a sparkos labs opamp single or dual channel. The op amp offers a temperature range of -40°C to +125°C and is available in an 8-pin SOIC package. 100 Ohm - 100 kOhm, 3). It could be very interesting to test their performance: - SNR - Bandwish - slew rate-. lib file into the related LTSPice folder 2. 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. Mar 17, 2019 · The Vendor's Bazaar forum is for commercial offers and transactions. diyAudio Community 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, Total Noise of OPA1656 vs OPA1612. Facebook Reddit Pinterest Tumblr Mar 21, 2023 · The trade off would be noise vs stability. Thread starter oldphaser; Start date Jan 10, 2016; oldphaser Facebook Twitter Reddit 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. 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. 5 MHz LM4562, 55 MHz OPA2134, 8 MHz A 1 metre cable with polyethylene dielectric has its first resonance at 50 MHz, a 1. So while Bruno prefers the OPA1656, I wouldn't discard a build with the OPA1612. ). 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. Opa1656 has good phase response at high frequency. Below is a comparison between OPA1656 and OPA1642. Best Regards, Chris Featherstone Dec 12, 2023 · It sounds great too. But I would still like to see the OPA1656 tested. Tried putting in opa1612 today. It is great to have some measurements behind the OP amp selection. Feb 6, 2018 · Forums. Mar 17, 2019 · We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). 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. What I am scared of is instability, I'm not sure if the P2 has bypass caps for the NE5532, and not exactly sure how bypass caps work with dip-8 sockets. So put 10 x OPA1656 in a bag to send costs 16,76 $ , to put 10 x OPA627 in a bag to send costs 130 $ . OPA1656 sounded worst, Muses 8920 sounded best. Standard opamp for that has pretty much become OPA1612. This was interesting as both the March Audio and the Buckeye Purifi amps were being built with the OPA1612. Altered text SYMATTR Value OPA1656 SYMATTR Prefix X SYMATTR SpiceModel OPA1656. He does test the TL072 against some more modern ones, but not the OPA1612 due to there being no DIP version I think. My OP1656 OpAmp Review. Aol 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. Sep 6, 2023 · I was using opa1656 with fosi v3 ever since I got the uni. It's best use as an alternative to opa1612 when noise is not a big concern. Is the OPA1656 the correct opamp to use? I heard it was the best so that’s why I picked it. Phoenix DIY Central! OPA1611 vs OPA134 or OPA1612 vs OPA2134. However, there really will be very little difference between it and other high performance opamps. Mar 28, 2022 · The OPA1656 can deliver 100 mA of output current, so it should be able to drive a headphone load. 8. At this point noise and ultra low noise supplies might be the last area I should put more effort into for this interface. OPA1612 is very Apr 6, 2020 · The OPA2134 is very ordinary, I consider it a side step to the NE5532. So many choices. May 21, 2020 · 이전에 사용했었던 opa1656에 비해 큰 개선까진 없었습니다. Best regards! Feb 11, 2021 · Yes. 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. The FET-input architecture achieves a low 2. Chip Amps. For the case of May 2, 2020 · New Purifi Buffer in V2. JFET inputs let you work with a larger range of input resistors. The idea of this group buy is to propose a full pack @fair price for a brand new Purifi Buffer : SPEC : - THD: 0,00026% @ Vin 2,5 V RMS - GAIN: 14 dB - BANDWIDTH: 2 Hz - 150 kHz - SLEW RATE: 24 V/uS - CMRR: > 100 dB @ 60 Hz - DYNAMIC RANGE: 127 dB - INPUT IMPEDANCE: 47 Kohm Part #: OPA1656. I prefer the opa2211 over the opa1612 (same chip but with less better specs). on LTSpice load, the lengthy lib update happend. 다이나믹스나 저음 깊이감 측면에서 거의 비슷하다는 느낌을 받았습니다. Aug 24, 2012 · i tryed lme49722 opa2134 and opa1612 ,--. opa1612를 받아주기엔 dk799, 아니 포터블 기기의 한계가 있지 않나 하는 생각이 들었습니다. Lme49720 provides same best performance as opa1656 and opa1612 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. 10 kOhm - 10 MOhm Set 1 produces no visual deviation at all. Great table. Next, OPA828 was evaluated as a gain or VAS section in a small A class power amplifier with extreme performance (2 MHz power bandwidth, 200 ns rise time, 0. Transparency got way better. I's latest offering, the OPA1656. Other Parts Discussed in Thread: OPA1612, OPA828. Psychic contributors here now . Some people have more recently started using OPA1656, which are very good, although they are a little less authoritative in the bass. Jul 4, 2021 · The article linked below isn't the be-all and end-all on op amps tests, but very informative. Part #: OPA1656. I think it's a matter of circuit design and implementation. To hear Bruno's discussion on OPA1656 scroll forward to 33. I used 10 or 12 in my preamp rolling project - never a problem with Application Report Understanding Op Amp Noise in Audio Circuits Tyler Noyes, Tamara Alani ABSTRACT One of the greatest design challenges when building a high fidelity audio circuit is how to reduce the total system Aug 3, 2024 · Forum Donor. Joined Nov 8, 2018 Messages 173 share a test between OPA1612 and OPA1656 . ••• I've been using mostly LM4562, except when I need a JFET opamp (high impedance inputs for example). It'll struggle a bit with 33 Ω load, though. Description: OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-Brown™ Audio Operational May 10, 2022 · You don't have to use SA, distortion level obvious on oscilloscope screen. The OPA1656 immediately raised my attention, plus there was/is a long thread about it on diyaudio. 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 Jul 4, 2009 · The Opa1656 has a much wider and better soundstage. gvooz itgakjvg wldk xces zwwwur unwk fsbn wfugrs ehiky hhbxtw