Opa1656 vs opa1612 vs opa16 reddit. Mar 17, 2019 · OPA1656 is less noisy than the OPA827, 2. 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. 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 TI OPA1612 dual operational amplifier benefits from excellent technical characteristics, allowing very good electrical and audio performance. 3V inside of each supply. OPA1612 is fuller sounding - especially lower midrange but also more dynamic. 8nV/rtHz). Two schematics in parallel and eight in parallel for both 1656 and 1642 were measured. I may try to find a pair of OPA1656. Is the difference in imaging clearly noticeable or just very subtle? Mar 17, 2019 · A quick snapshot of the OPA1656 performance specs: 2. These sound great and outshine many of the other modern high performance audio opamps out there today. I too find that the OPA1612 and OPA1642 are fantastic upgrade/replacements in a whole lot of professional and consumer audio gear out there equipped with comparatively outdated opamps. Transients are stronger, both rimshots of snare drum and big-band trumpets. It appears that the OPA1611/2 have a lower noise voltage, wider bandwidth and higher slew rate than the OPA134 and OPA2134's. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety Total Noise of OPA1656 vs OPA1612. Feb 11, 2021 · looks very similar to the eighth image from post #2 of Bel Canto's S300i/S300iu - driven by dual mono Icepower amplifier modules with switch mode power supply - go to Inside the Bel Canto S300i integrated amplifier | Audiokarma Home Audio Stereo Discussion Forums and Bel Canto e. 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. . 1-nV/√ Hz noise density with an ultralow distortion of 0. -131 dB THD+N at 1kHz, 600 ohm load, 3. e. 1-nV/√Hz as well as an extremely low distortion level of 0. He gives strong recommendations for some applications and also caveats about ill-informed op amp rolling. 4 nV/rthz. Review. It ensures a very low noise density of 1. 5 metre cable at 33. the AD797, but still worth a check for DIY-ers. 9 mA of supply current to accommodate the power supply constraints of many types of audio products. The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. I'm with Jim here. OPA1611, OPA1612 www. May 10, 2022 · You don't have to use SA, distortion level obvious on oscilloscope screen. alongside with some aliexpress el`cheapos for like 2 buck a piece instead of 7. frequency data with your expected condition, but it take some Mar 17, 2019 · Azul headphone amp (BAF 2019) uses an OPA1611 + LH0033 composite. 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. 5Vrms signal, 80-kHz measurement bandwidth. ••• Dec 11, 2019 · Normally you'd regularily search in the manufacturers new product listings first for any new interesting products. OPA1656: 3Mb / 42P [Old version datasheet] OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-Brown™ Audio Operational Amplifiers REVISED SEPTEMBER 2022: Jul 4, 2009 · The Opa1656 has a much wider and better soundstage. My OP1656 OpAmp Review. Dec 10, 2021 · This is my first time doing anything DIY with audio. 3 MHz. 5V inside of the positive rail . I's latest offering, the OPA1656. 000015% at 1kHz. I think it's a matter of circuit design and implementation. 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. Vendor Mar 17, 2019 · We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). 100 Ohm - 100 kOhm, 3). Are there any other OPA627 is a single channel op amp. I don't care about listening tests or something else, just want to use the technical better one in my amp. According to the datasheet, TI lists: BM, BP, SM, AM, AP, and AU grades. The OPA827 for example has superior load drive,much lower distortion and miniscule DC offset. Is the OPA1656 the correct opamp to use? I heard it was the best so that’s why I picked it. 25 V to ±18 V (4. I've had the Burson V5i, and the V6vivid and I have no space to put a sparkos labs opamp single or dual channel. 5). Close to zero DC mv at its output would enable removal of the dreaded electrolytic coupling caps which will definitely lower colouration and improve sound quality. Home Mar 17, 2019 · The OPA1641 would be slightly better. The OPA1612 offers rail-to-rail output swing to within 600 mV with a 2 kΩ load, which increases headroom and maximizes dynamic range. I prefer the opa2211 over the opa1612 (same chip but with less better specs). Now, we run through a hand calculation to find the total noise of a simplified audio Mar 17, 2019 · I purchased 10 OPA1656's. 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). i expected them to put some The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. com with a TI insider involved. Composite amplifier is one of the best application with opa1656. This feature accommodates the power supply constraints of many types of audio products. My understand if noise isn’t a problem the opa1656 is great alternative to the opa1612. May 15, 2022 · LME49720 vs OPA1612 vs Muses02. For the case of 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. Thread starter forami; Start date 2022-05-15 10:48 am; Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. 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. The op amp offers a temperature range of -40°C to +125°C and is available in an 8-pin SOIC package. 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. 9nV/rtHz broadband voltage noise. Taking advantage of a wide power supply range and mounted on a DIP8 bracket, it can replace many other models. 1 nV/√Hz noise density with an ultra-low distortion of 0. Dec 28, 2018 · I would like to see the OPA1656, a burr brown sound plus chip. com In no case did I have too high expectations regarding the sound 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. Mar 17, 2019 · I measured again the noise of OPA1656 vs OPA1642. 4nV/rtHz both flat. 8 bucks for a genuine part. Regarding the tone stack, if there is enough gain in the front-end, the input-referred noise may not be impacted by the resistances. Home. He does test the TL072 against some more modern ones, but not the OPA1612 due to there being no DIP version I think. One S300iu integrated amplifier | Stereophile. 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 Mar 17, 2019 · Benefit is lower dc offset and less distortion also high open loop gain also superior stability. The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. Jul 4, 2009 · Here’s a great article comparing opa2156 CMO vs opa1612. Jul 5, 2006 · SQ was about the same as other ESS-based dacs in that class. Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. The Texas Instruments OPA1656 has a specified temperature range from –40°C to +125°C and is offered in an 8-pin SOIC package. 53 MHz gain bandwidth product, 24V/us slew rate. If you need the exact apples-to-apples comparison data, we have to acquire the THD+N vs. Lot of power in there, I wonder if it will be stable inside Objective2; however, there's definitely not enough room inside, but design and implementation seems on pair with how it measures. Oct 15, 2014 · Texas Instruments' OPA1612 (dual) bipolar-input operational amplifier achieves very low 1. 2V inside the negative rail and 2. It outperforms most other opamps, very low noise & distortion, doesn't color the sound whatsoever. 000015% at 1 kHz. 1 kOhm - 1 MOhm 4). The schematic, spectrum and results are given below. Feb 28, 2021 · The new breed of TI J-Fet opamps offer superior performance to that old soldier the OPA2134. The OPA1656 immediately raised my attention, plus there was/is a long thread about it on diyaudio. It has a very good dynamic range and a low level of harmonic distortion. Aol for the OPA2134 with a 600 ohm load has an output swing that is 2. I've been using mostly LM4562, except when I need a JFET opamp (high impedance inputs for example). I repeated measurements a few times, using sets of resistors: 1). I used 10 or 12 in my preamp rolling project - never a problem with Sep 25, 2019 · The OPA165x operates over a very wide supply range of ±2. Some people have more recently started using OPA1656, which are very good, although they are a little less authoritative in the bass. 5 MHz LM4562, 55 MHz OPA2134, 8 MHz A 1 metre cable with polyethylene dielectric has its first resonance at 50 MHz, a 1. Mar 17, 2019 · OPA1656 rolling I tried in all cases to bypass the rails with a 0. I’m going to solder the IC to a soic to dip adapter then plug it into the the amp. But that does not say anything about the SQ. It offers exceptional performance in almost any audio application. I had no oscillations or instability with the OPA1656. 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. May 9, 2023 · Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. Pin can be left floating or connected to any voltage between (V–) and (V+). I looked at the Slew Rate as my main 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 6, 2018 · This question is triggered by a repair I recently did where the originals, while still available, were stupid expensive. OPA1656 Nov 30, 2021 · For example, Aol for the OPA1656 with a 600 ohm load will have a linear output swing that is 1. Standard opamp for that has pretty much become OPA1612. It's best use as an alternative to opa1612 when noise is not a big concern. 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 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. 6 fa/rtHz broadband current noise. The BA is only an indication of "grade" for certain tolerances for optimal conditions for use. 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. Mar 17, 2019 · Also pricing for 1000+ isn't really that expensive for opa1656, opa1602, opa1612. It has the most stable input capacitance vs. It could sound pretty good, but one could get sound just as good from IC opamp designs. Mar 17, 2019 · The OPA1641 would be slightly better. 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. Two cases were evalutated – in a Apr 10, 2019 · By newer I meantnewer, because OPA1612 is a newer design then let's say NE5532 or even LM4562. You should be able to find single-to-dual DIP8 adapters for mounting 2xAD797 on a DIP8 socket. frequency in 10 - 20kHz might not change in 8Vrms output condition for OPA1612/56, considering with its output impedance curve and full-power bandwidth. 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. This OPA1656 OPA from Texas Instrument offers very good performances for audio use. Jul 4, 2021 · The article linked below isn't the be-all and end-all on op amps tests, but very informative. I am planning to replace the NE5532 in my Burson Funk with the OPA1656. 5 V to 36 V) on 3. For example, at 10Hz both parts are approximately 35nV/rtHz. Not sure it worth the trouble and price difference vs. It's a killer OpAmp, and better suited to non-inverting buffer duties than the OPA1612/2211 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 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). It's a virtually unknown chip as when you search on Digi-Key it doesn't come up as soundplus. To check if they will match the previous ones that were made with balanced 10x paralleled op-amps. PRODUCTION DATA. common mode voltage that I've measured on any op amp. Feb 11, 2021 · According to the TI datasheets OPA1612 has less noise than OPA1656. CMRR is not a big issue. I prefered the sound of my DAC with the OPA1656's hands down even over the discrete op-amps. However, there really will be very little difference between it and other high performance opamps. 4 Calculating Voltage Noise at the Output. OPA1656 sounded worst, Muses 8920 sounded best. 9nV/rtHz as opposed to 3. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety Sep 27, 2019 · The OPA1656 operates over an ultra-wide supply range of ±2. 25V to ±18V or (4. 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 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 Jan 10, 2016 · He talked to me about OPA1611's versus OPA134's as well as the OPA1612's versus OPA2134's. 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. 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 . The Opa1612 is the audio version so they made the specs slightly worse. But I would still like to see the OPA1656 tested. 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. OPA1612 is very low noise but have a rise in distortion when driving 600 ohm as voltage While, I suppose the flatness of THD+N vs. Opa1656 has good phase response at high frequency. 10 Ohm - 10 kOhm, 2). IMHO the outcome was mostly decided by how the opamps responded to the RF coming out of the dac chip. Jan 28, 2018 · I had the chance to gather up a selection of opamps from my parts bin, including BB OPA2604, OPA637, AD823, LME49860, JR4556, Muses8820 and 8920, and compare them against each other along with a Burson V6 Classic (thanks to them for sending me an evaluation). 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. The knee in the OPA1656 noise curve is higher because the broadband noise of the OPA1656 is lower (2. 9mA of supply current. 9nV/rtHz vs. 10 kOhm - 10 MOhm Set 1 produces no visual deviation at all. Dec 28, 2017 · There are some things to watch out for when swapping op amps. 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. The FET-input architecture achieves a low 2. Since I am not interested in the V6 Vivid Dual that it comes with. 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. NE5532 is a very good amplifier especially for the price ($0. 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. (or the 2156) The opamp has good phase margin and seems quite tolerant of sub-optimal layout. 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. 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. Does anybody Mar 17, 2019 · We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). >100mA output current. ti. We would like to show you a description here but the site won’t allow us. 1F X7R on the backside with the shortest possible lead length. Mar 17, 2019 · If you pick a point on the 1/f portion of the noise spectral density curve you can see that the two parts are essentially identical. 5V to 36V) on 3. It'll deliver 75mA RMS into a 32 ohm load; that is 180 mW which is quite a bit greater than the rated maximum shown in post #162. 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. kbr gfuhhrt efmm xkswpr lhxw obz vxfnd dgcnbr glkf vww