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Opa1656 vs opa1612 forum for sale
Opa1656 vs opa1612 forum for sale. It appears that the OPA1611/2 have a lower noise voltage, wider bandwidth and higher slew rate than the OPA134 and OPA2134's. Joined Nov 8, 2018 Messages 174 share a test between OPA1612 and OPA1656 . 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 Aug 3, 2024 · Forum Donor. Mar 17, 2019 · I purchased 10 OPA1656's. 25V to ±18V or (4. e. 54. Dec 10, 2021 · This is my first time doing anything DIY with audio. 5 V to 36 V) on 3. Total Noise of OPA1656 vs OPA1612. NE5532 is a very good amplifier especially for the price ($0. Jul 5, 2006 · SQ was about the same as other ESS-based dacs in that class. 7 pA/rthz) will multiply with the pickup resistance (varies quite a bit, say typical is 10 kOhm) to become the May 15, 2022 · Buggle2 Riaa board. 5 metre cable at 33. Sep 25, 2019 · The OPA165x operates over a very wide supply range of ±2. Best Regards, Chris Featherstone Dec 7, 2023 · Forum Donor. Mar 17, 2019 · Benefit is lower dc offset and less distortion also high open loop gain also superior stability. 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. Jul 4, 2021 · The article linked below isn't the be-all and end-all on op amps tests, but very informative. The different players sounded different. Mar 9, 2023 · SMSL SU-10 vs M500 MKIII vs DO300 21 vs 9 vs 11 dual op-amps OPA1612 (accoring to the spec from smsl-audio) What is the Op-amps doing in that? M500 SINAD is higher than DO300 with less op-amps. 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. Soundstage and placement felt more solid. 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 Part Number: OPA1612 Other Parts Discussed in Thread: OPA1622, OPA1688 Hello, I am considering the OPA1612 as a headphone driver replacement for JRC2114. MUSES8820 is the best, IMHO. 5V). Sep 6, 2023 · I was using opa1656 with fosi v3 ever since I got the uni. 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). The Texas Instruments OPA1656 has a specified temperature range from –40°C to +125°C and is offered in an 8-pin SOIC package. CMRR is not a big issue. Aug 3, 2024 #201 Buckeye Amps said: Sticking with the OPA1656. 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've had the Burson V5i, and the V6vivid and I have no space to put a sparkos labs opamp single or dual channel. Dual customzied solution will give unmeasurable distortion (possibly -180db). 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. It's best use as an alternative to opa1612 when noise is not a big concern. Which one has better electrical TI E2E support forums 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. It could sound pretty good, but one could get sound just as good from IC opamp designs. 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. I’m going to solder the IC to a soic to dip adapter then plug it into the the amp. File Size: 3MbKbytes. Mar 17, 2019 · We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). C $7. 3 MHz. Currently, I require opamps in the DIP package. I looked at the Slew Rate as my main Mar 17, 2019 · The Vendor's Bazaar forum is for commercial offers and transactions. Welcome to r/guitar, a community devoted to the exchange of guitar related information. Standard opamp for that has pretty much become OPA1612. 6 mA but I know I’m in the Op amp thread so I don’t want to take the thread off topic. Feb 11, 2021 · According to the TI datasheets OPA1612 has less noise than OPA1656. Jan 27, 2024 · The OPA1612 has lower noise and distortion than OPA1656. Free shipping. Dec 28, 2018 · I would like to see the OPA1656, a burr brown sound plus chip. Data for opa1692 "noise removed" version. Forum Donor. I also refurbish large format recording consoles. OPA1656 Sep 27, 2019 · The OPA1656 operates over an ultra-wide supply range of ±2. ••• 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. Mar 21, 2023 · The trade off would be noise vs stability. But that does not say anything about the SQ. Buy It Now. common mode voltage that I've measured on any op amp. Mar 17, 2019 · A quick snapshot of the OPA1656 performance specs: 2. 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. 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. 5 MHz LM4562, 55 MHz OPA2134, 8 MHz A 1 metre cable with polyethylene dielectric has its first resonance at 50 MHz, a 1. 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. Joined Dec 21, 2020 Messages 1,924 Likes 2,847. Testing 20-30 OPA's I have in stock, different types and makers, didn't find any that have this gluk. Download. You can dig on the Internet and find modern op-amp test results, but it quickly crosses over into sonic character and subjective opinion. Joined and Nord has models with discrete ones for sale — but Other Parts Discussed in Thread: OPA1612, OPA828. Regarding the tone stack, if there is enough gain in the front-end, the input-referred noise may not be impacted by the resistances. Transients are stronger, both rimshots of snare drum and big-band trumpets. 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! This OPA1656 OPA from Texas Instrument offers very good performances for audio use. BTW, last year I crippled my €4. But I would still like to see the OPA1656 tested. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety Nov 30, 2021 · Part Number: OPA2134 Other Parts Discussed in Thread: OPA1656 , OPA134 Hi Team, My customer wants to replace OPA1656 with OPA2134. 5). Composite amplifier is one of the best application with opa1656. Several reference are used on forum. 4 nV/rthz. This feature accommodates the power supply constraints of many types of audio products. 53 MHz gain bandwidth product, 24V/us slew rate. Since I am not interested in the V6 Vivid Dual that it comes with. He gives strong recommendations for some applications and also caveats about ill-informed op amp rolling. Description: OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-Brown™ Audio Operational Mar 17, 2019 · OPA1656 rolling I tried in all cases to bypass the rails with a 0. Taking advantage of a wide power supply range and mounted on a DIP8 bracket, it can replace many other models. It's a killer OpAmp, and better suited to non-inverting buffer duties than the OPA1612/2211 The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. com with a TI insider involved. I felt a great improvement overall. I had no oscillations or instability with the OPA1656. For the case of Jul 4, 2009 · Marketing 101 by having one of the engineers on the diy threads because it creates interest (especially from spec crazy diy-ers who “need” the lastest and best specs and use “word of mouth” via the audiophile threads to push cost up by popular demand) They do outsource them to official distributors ie Mouser, Digi-Key but you have to buy them in bulk (we’re talking 100s to 1000s) and 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. 9 v/µSec for a OPA1656 at isn't really that expensive for opa1656, opa1602, opa1612. 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. I don't care about listening tests or something else, just want to use the technical better one in my amp. 000 (DIY!) tube preamp with tube Part #: OPA1656. (or the 2156) The opamp has good phase margin and seems quite tolerant of sub-optimal layout. 8. OPA1656 Op Amp Ultra-Low-Noise Low-Distortion FET-Input Audio Operational Am P M. Mar 17, 2019 · The OPA1641 would be slightly better. Below, I have highlighted the components that could be adjusted if this the issue. 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. >100mA output current. I used 10 or 12 in my preamp rolling project - never a problem with Jun 24, 2013 · Sylph-D100 repeat measurements, using OPA1656, LRS-350-36 adjusted to 38V Motu Ultralite MK5 ADC, SMSL DO100 DAC (can drive the output up to 16Vrms) Needs a DAC with 5Vrms out to drive the amp into 20Vrms (100W 4ohms) Dominant 2nd harmonic due to inductor selection. It has a very good dynamic range and a low level of harmonic distortion. Are there any other Jul 3, 2019 · FYI I'm about to order an Audiophonics HPA-S400ET with OPA1612 instead of OP275. Mar 17, 2019 · OPA1656 is less noisy than the OPA827, 2. The Vendor's Bazaar forum is for commercial offers and transactions. I think it's a matter of circuit design and implementation. I prefered the sound of my DAC with the OPA1656's hands down even over the discrete op-amps. He does test the TL072 against some more modern ones, but not the OPA1612 due to there being no DIP version I think. Some people have more recently started using OPA1656, which are very good, although they are a little less authoritative in the bass. So you'd be "degrading" the performance by going that route (even though both are excellent). I read on several forum the advantage to use specific AOP for the final stage of DAC or Amplifier. 6 fa/rtHz broadband current noise. Page: 42 Pages. Dear all, aiming to keep THD+N figures constant over the audio frequency range. It offers exceptional performance in almost any audio application. 5V to 36V) on 3. The OPA1656 immediately raised my attention, plus there was/is a long thread about it on diyaudio. I also have the 1612. This is a forum where guitarists, from novice to experienced, can explore the world of guitar through a variety of media and discussion. Opa1656 has good phase response at high frequency. (OPA1612 vs OPA1656) before production Feb 11, 2021 · 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. Feb 28, 2021 · I should have done my research a bit better because because I overlooked OPA1612 which is purported to have superior performance compared to LM4562. Opens in a new window or tab. OPA1612 sounds better than any transistor preamp I've ever heard and better then my own 6N6P 2 case -no barrels hold- 36kg monster preamp with a 100% double blind test win rate. OPA1656 sounded worst, Muses 8920 sounded best. Apr 10, 2019 · I have interested in low ESR Electrolytic Capacitors to power the Opa1612. May 9, 2023 · Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. 9mA of supply current. 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 Jan 10, 2016 · He talked to me about OPA1611's versus OPA134's as well as the OPA1612's versus OPA2134's. Tried putting in opa1612 today. Brand New. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety Mar 17, 2019 · The OPA1641 would be slightly better. It could be very interesting to test their performance: - SNR - Bandwish - slew rate-. The diyaudio forum might be better suited for posing the question. 4 Calculating Voltage Noise at the Output. My understand if noise isn’t a problem the opa1656 is great alternative to the opa1612. 9nV/rtHz vs. OPA1612 is fuller sounding - especially lower midrange but also more dynamic. from China. The FET-input architecture achieves a low 2. In note slyt630. 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. Does anybody TI E2E support forums Dec 6, 2018 · I don't think you can "get into it" here, it quickly degrades to psychoacoustics and audiophoolery compared to science. I suggest the following reference - 994Enh Discret OpAmp SONIC IMAGERY LABS - SPARKOS LABS SS3606 - AOP 1612 - LM4562 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. Transparency got way better. 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, 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). If you have guitar related questions, start with the "search" field at the top of the page. It has the most stable input capacitance vs. Is the OPA1656 the correct opamp to use? I heard it was the best so that’s why I picked it. 4nV/rtHz both flat. 9 mA of supply current to accommodate the power supply constraints of many types of audio products. Other Parts Discussed in Thread: OPA1612, OPA1642, RC4136 I use these amplifiers for pro audio. I am planning to replace the NE5532 in my Burson Funk with the OPA1656. OPA1612 is very . We would like to show you a description here but the site won’t allow us. Sep 4, 2024. Audio Equipment For Sale or To Buy; Replies 5 Views 1K. Dec 11, 2019 · Normally you'd regularily search in the manufacturers new product listings first for any new interesting products. Dec 28, 2017 · There are some things to watch out for when swapping op amps. 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. 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. Dynamics felt better, bass felt more defined and the upper midrange seems to have more air. The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. IMHO the outcome was mostly decided by how the opamps responded to the RF coming out of the dac chip. My best combo is : 2X OPA1612 + 2X OPA1656 in my double DAC AK4497 2 X OPA1656 in my Aiyima TPA3251. Sylph-D400 5W 4ohms using 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, OPA1656: 3Mb / 38P [Old version datasheet] OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-Brown??Audio Operational Amplifiers DECEMBER 2021: OPA1656: 3Mb / 42P Jul 26, 2020 · I own many OP Amps. May 10, 2022 · As you can see, opa1656 exibits sharp change in RTI offset about 6-7V (powered +-12. However, I won't swap to an OPA1612 because I am sufficiently happy with the LM4562 performance. 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. pdf (sorry, pasting the address makes a huge link) you use a ~50 ohm isolation resistor. Compare the datasheets. 5Vrms signal, 80-kHz measurement bandwidth. Tested a lot of OP, including LME49720, OPA1612, OPA1642, MUSES8920 and MUSES8820. It's a virtually unknown chip as when you search on Digi-Key it doesn't come up as soundplus. Now, we run through a hand calculation to find the total noise of a simplified audio 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. Jul 4, 2009 · Here’s a great article comparing opa2156 CMO vs opa1612. May 23, 2018 · Opa1656 and opa1612 without tweaking have better performance than almost any discrete solution. -131 dB THD+N at 1kHz, 600 ohm load, 3. 9nV/rtHz broadband voltage noise. PRODUCTION DATA. 1F X7R on the backside with the shortest possible lead length. The op amp offers a temperature range of -40°C to +125°C and is available in an 8-pin SOIC package. 25 V to ±18 V (4. Feb 11, 2021 · I'll look at it if you know of one amp using OPA1612 sounding audibly better than another amp using cheaper op amp in objective listening comparison. This is just a theory. 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 OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. 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.
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