Opa1656 vs opa627. OPA1656: High-Performance CMOS Audio Op Amp.
- Opa1656 vs opa627 " If I can get the exact procedure of what to do on this CDP with the 627s (including which 627 and what caps to remove) I am going to ask him to run it by the Senior Technician and who knows, maybe this OPA627 is a single channel op amp. abandon BB's DiFet type of opamps ? The OPA627 replacement : OPA 827 , has only 0,5 V . -Category Forums. With the 2015 HDtracks Sampler, first track cue is Sonata for 2 Violins in G Major, Op. The most popular was to replace the stock op amps with the BB OPA627 op amps and do something with resistors and Caps. I read a post at this site Philip Jackson's HiFi DIY Project - Second Preamplifier Page that he replaced the opa2134 with opa627 and some components like jfet xsistor and some caps and resistors. Jump to Latest R. Feb 27, 2005 at 9:28 PM. CMRR is not a big issue. opa627 (in dual), lt1028 (in dual), lm6172 is too much speed, and are unstable in my tube-opamp hybrid preamplifier. The LM4562 had a texture to the sound that I enjoyed, but was also just a little bit harsh. g. Thread 'OPA828 / OPA2828 vs OPA627' 2023-06-08 2:24 pm. OPA192 (FET input) looks better and they show the Vos vs Vcm transition: G'day all, I guess that this sounds suspiciously like the subject of 'op amp rolling, but actually it isn't. But i have a bunch of burr brown's opa627. Share Jul 20, 2004 at 2:17 AM. Buggle2 Riaa board. Post #16 of 26 Sovkiller Proved that despite its huge size the CD3000 can be shoved down one's throat. Seems that with the cheap good NE5532P the THD+N decreased from 0. 9‑nV/ (250 mA) precision operational amplifier OPA627 I currently have a topping d10s, and I’m looking into changing out the opamp for something a little higher quality. 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. Dual customzied solution will give unmeasurable distortion (possibly -180db). Now I am using pairs of V5i and OPA828 with great results. jpg. PRODUCTION DATA. synaesthesia. 0:00 opa8272:30 opa627プリアンプの初段のオペアンプの聴き比べです。人気があり、偽物まで存在するopa627と、そっくりな音のopa827の比較です。opa827が OPA1656 - Better imaging / separation of instruments. Mark Tillotson. I decided to update my design to have OPA1656, gain-bandwidth product 53 MHz LME49990, 110 MHz OPA1612, 40 MHz Behaving well: OPA2604, 20 MHz OPA627, 16 MHz OPA2107, 4. However, BB(TI) products since the new OPA827 have improved significantly. . joaco. At least, that's my understanding. Even at prices you may think are low, they have decent margins. 2020-01-05 11:05 pm #15 LM4562 vs OPA2134 vs [ ? ] Home. The OPA6x7 are useful in a broad range of precision and high-speed analog circuitry. 000035% (–129 dB) at 20 kHz If you love the OPA1612 you will love the OPA1656 too. concerning the internal circuit topology most typicall audio op-amps like NE5534/NE5532, AD744/AD746 or OPA627/OPA637 uses two voltage gain stage in the NFB-loop (LTP-VAS-Buffer) According a lot of listening tests I always note crispy and harsh sound character, that this is one but an important reason for this impressions. I know OPA627 is 1029 less than OPA 1656 Search for it on google for OPA627 and OPA1655! for 5534 replace No one can tell you the difference between an OPA1655 and an OPA1611 in a Wiim. Product sellpoints. 5 KB · Views: 960 syn08. Sounded like you had a cheap hobby, Motherone ! But i did read you first posting earlier, thank I doubt that the OPA1656 is made on a jellybean CMOS process. lightnloudsounds. In fact, I had put in Yanasan's dual 4499 dac the OPA1656 as I/V converter and the OPA828 as diff/ SE summing. 1F X7R on the backside with the shortest possible lead length. 000. Joined 2005. ) Compared to OPA627 and OPA827, OPA828 has improved headroom. Has anyone tried the OPA1656 Op Amp yet? They will use a bit more power when compared to something like the OPA1692, opa627 or ad797 etc. OPA134 Posted 10th February 2012 at 11:49 PM by rjm Updated 11th February 2012 at 03:48 AM by rjm. 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 That's why my design (white/ gold) has the thermal pad underneath and vias connecting the top and bottom together (as per the datasheet). Happy New Year, Patrick . Quote: Originally Posted by DCameronMauch Having read so many of these opamp subjective comparisons, this is what it has boiled down to for me: 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 is some 2. com next week. The BA is only an indication of "grade" for certain tolerances for optimal conditions for use. This is my first time doing anything DIY with audio. Newer op Opa1656 and opa1612 without tweaking have better performance than almost any discrete solution. I used 4 Burson V6 Vivid in my Burson headphone amp but I have replaced them all with OPA1656. The entire OPA627 line sounds obsolete compared against OPA828. The reason why i want to use two opa627 is i cannot find an opa2134. But of course, how they're There's no shortage of candidates here, and the new OPA1656 is a great option, but you could also check out: OPA1642, OPA1678, OPA827, and the newer OPA828, or also I may try to find a pair of OPA1656. A singers head is blown up to giant proportions. 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. Is the difference in imaging clearly noticeable or just very subtle? I purchased 10 OPA1656's. 5 MHz LM4562, 55 MHz OPA2134, 8 MHz A 1 metre cable with polyethylene dielectric has its first resonance at 50 MHz, a 1. /Peter . Headphone Amps (full-size) Thread starter FritzS; Start date Feb 25, 2005; Prev. The OPA627 is mainly good for very low input bias - usually no need for this with audio. The AD chips I have tried (AD823 and AD8620) have tended to be brighter sounding with less detail and soundstage, but more forgiving of recording artifacts and problems in the source. R. 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. And ADA4627, which appears intended as a direct replacement (a decompensated ADA4637 exists as well). Anyone know from experience which is better? I appreciate all suggestions, ideas and opinions, especially the ones based on actual listening experience and satisfaction with these Mods and even better if they have been done on a RCD 865! After using the 8610s the OPA627/637's sound thick, muddy, and flat. This gave me a chance to OPA1656 de TI es amplificador operacional de audio Burr-Brown™ SoundPlus™ con ruido y distorsión ultrabajos. Newer op amps provide a far more detailed and precise sound, which in turn also results in a broader tonal range. Specs: Very Low Noise: 4. Why did T. the OPA627 metal had a wire to the can too, so it was really shielded! Also at this old days, a BB engineer told me, OPA1656: High-Performance CMOS Audio Op Amp. Theme - Light; YYYY-MM-DD / 12-hour clock; Contact us; So I have heard about replacement by OPA627, and OPA637, have some originals from ti . OPA1656 had respectable slew rate without slew boosting so I opted to forego that circuitry in the audio part. 4 %âãÏÓ 2 0 obj >stream xœ½ZKoÜÈ rÔ 0—^¬D“ìn> Èaô°WÉÚ’¥±“ |¡9- c 9&9’½ÿ# ä”SîɯÉßIu³ª›äpFô&È. Another surprize , you'd think considering the price and age , next gen OPA827-828 would have replaced the 627. Overall, don't recommend opamp rolling. 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. www. Forums. Noise and distortion wise OPA1641 or OPA827 perform better. 2012-12-03 1:34 pm #23 2012-12-03 1:34 pm #23 I've The 4627 is faster the the 627 (82v/uSec vs. We didn't have a dedicated thread to gather all the impressions, reviews and tutorials for this relatively obscure class of audio devices so here it is! 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 AD797 was a response to the popular Opa627. I have on had 4 ad8066's that I was going to have installed and was considering the opa627's. Benefit is lower dc offset and less distortion also high open loop gain also superior stability. Accuphase M-2000, THD waveform. diyAudio Community diyAudio Store. Thanks a lot for that. 00005% at 1 kHz. and the prices are a small fraction of what you paid for top-of-the-range models such as the OPA627 and OPA2107 ten or fifteen years ago. Compare them on paper for OPA627 is a single amp (won't fit). This article offers a comprehensive exploration of these differences, providing valuable insights for optimizing their The OPA828 and OPA2828 ( OPAx828) JFET input operational amplifiers are the next generation OPA627 and OPA827, combining high speed with high dc precision and ac performance. DIY (Do-It-Yourself) Discussions. One other very noteworthy difference is the Vivid has a strong attack, but loses a bit on the decay so sustain is better on the SS360x. OPA604 vs. OPA828 / OPA2828 vs OPA627 By now it has been a while since OPA828 (and OPA2828) were released. The AD8610 seems to present a more open window, especially in the highs, on music, transients and realism of highs being enhanced. 5 nV/vHz at 10 kHz but they are pricy (€40/pc) ! They are still manufactured and available. With this IC I can instantly tell the difference between good mastering/mixing tracks vs not so good and muddy. Help! OPA1656 / OPA1612 / Burson V5i / OPA627 / Genuine NE5532 / Genuine Muse 02 / 0PA1622 / OPA1642 / OPA1602 The question of Op amps has already been debated on DIY audio, and I had used the OPA1656 and I OPA2134: OPA2134 VS OPA1656. common mode voltage that I've measured on any op amp. Last edited: Jun 12, 2020. I would say though that on some CD's it can come across as a bit bright. Which one has However they measure and perform worse than SOTA audio ICs like lme49720, opa1612, opa1656 etc. Maybe try the OPA2604, designer Thorsten Loesch of AMR fame regards that one as good, unless you move to singles on an adapter board using something like the OPA627. 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). 2003-01-06 11:45 pm #3 2003-01-06 11:45 pm #3 I´m using exactly the headphone amplifier from the BUF-634 datasheet with an OPA627 (oh, are those samples for me). I have OPA627's on a Stokes SDS class A headphone amplifier, before those i tried lower priced opamps. Go. Next, we will take a closer look at the comparison between the AD797 and OPA627. Subscriber. Thread starter rds; Start date Aug 26, 2008; Aug 26, 2008 at 5:53 AM Thread Starter Post #1 of 7 rds Headphoneus Supremus. The owner then ordered a set of Sparkos Pro SS2590 discrete opamps. P. 2012-08-24 7:28 pm #1 2012-08-24 7:28 pm #1 hi i Noise OPA827 vs OPA1656. OPA828 / OPA2828 vs OPA627. The common-mode rejection is identical at -116 db, and the THD specs are also quite similar, with the 627 having a -3db OPA167x Low-Distortion Audio Operational Amplifiers I try all five opa1656 but the best sounding was using 2 opa1656 at the front and 1 opa1656 in the back, in the middle 2 opa2604 Opa1656 is the best I tried for Aiyima07 not Pro, the 2604 in that model meehhh at front 2 opa627 in the middle 2 Also, I typically preferred simplicity in the op amps I developed. Joined Nov 25, 2015 Posts 332 Likes 77. Sound Science. Newk In my case the OPA828 has been a clear upgrade to the OPA627 but the OPA1656 is an upgrade to the OPA828. So both suggestions from you guys have been helpful. Based on the application I don't believe pulling the extra power will be of concern and the OPA1656 with the lower noise floor is a great choice. loudnoises Escalates Quickly. In my case the In my experience, older op amps sound like old outdated technology compared to newer ones. From what I know the OPA1656 is currently the highest-spec audio grade standard opamp that TI offers. High-Performance Op Amp: Premium Quality:opa1656 vs ne5532, the opa828 delivers reliable performance in audio applications. It depends very much on the circuit if a faster OP can be used. 022uf film foil were only caps in audio path she picked the opa1612 from ne5532 OPA1656: 611Kb / 23P [Old version datasheet] Ultra-low-noise, low-distortion, FET-input, Burr-Brown audio operational amplifier OPA1662: 1Mb / 32P [Old version datasheet] Low Noise and Distortion, General-Purpose, FET-Input AUDIO OPERATIONAL AMPLIFIERS For comparison reference, the waveforms of RRO type OPA1611, 1641, 1655, ADA4625-1, and non-RRO type OPA627, 827, LME49710, ADA4627-1 are attached. Please don't forget to remove the compensation cap that is usually mounted when NE5534 is used ( 22 pF ) because OPA627 is compensated internally. 5-nV/√ Hz noise density with an ultra-low distortion of 0. I just have no idea how to do it. 20. 9 $ , they have a decent margin ? But e. diyiggy. Any detailed comparison done (in the context of The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. I prefered the sound of my The OPA627 is mainly good for very low input bias - usually no need for this with audio. It has the most stable input capacitance vs. 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. Joined Apr 26, 2004 Posts 727 Likes 10. I generally . 5 vs 8 nv. I hear OPA828 is the new version of the OPA627, so I may try that one out. 3e AUDIO TPA3250 - сравниваем разные ОУ - OPA1656, OPA627, Muses01, Muses02, VV4ЖМИТЕ НА КНОПОЧКУ "СПАСИБО" ДЛЯ СЧАСТЬЯ!!Понравилось Images show OPA627, Burson V5 and Buson V6 Classic op-amps and their relative size and Cyenne Dac 3100 with OPA627 and two V6 Classic op-amps in sockets. IÍîêz~õ ? 1/š±(šEîÌcŽ?«ä‘ëD í ‹=& žk !œ‹@ ö £sZ µå ìSØUÂpÇ ŸÚ_öß!ÄSw wŒéBÉ xNpP ½á —û) ‡(h{„ ¼úÉ ã oÍu B| Šyˆ‚ s? óI)¢' ñÀéøÀi oÿé 2í í0çÜõ öð~ð±ºûÀc@¶ ö@«ãÐ C ƒ maybe the opa604 would have done it in the bands, but I don't have enough of it here to compare and because I already spent the money for the opa627 we like it very much, I'll leave it now. Share Reactions: sp33ls and wein07. I also really liked the OPA627 that I had in an audio-gd dac years ago. Joined 2018. The completely docile op amps are the OPA2604, the OPA627, the OPA2107, the LM4562/LME49720 and the OPA2134. And this preamp sounds MUCH better than Audio Research, Burmester and Accuphase preamps costing above €10. Opa1656 has good phase response at high frequency. 00003% at 1kHz. It's a For audio use, I see no reason to buy OPA627 when you have OPA827, OPA828, OPA164x, and OPA1656. amb Site Admin Posts: 12185 Likes: 293 This OPA1656 OPA from Texas Instrument offers very good performances for audio use. High end OP's - LM6171 vs. joensd. 2022-07-20 7:29 pm #708 OPA627 vs ADA4627. I am planning to replace the NE5532 in my Burson Funk with the OPA1656. OPA1656 I've used AD8610, OPA627 but don't really have much concern for/belief in particular op amp's 'sound' once you get to a decent quality level Did you tried OPA1612? I wish to hear something about OPA1612 vs LM4562 M. (RL is the original 2kΩ. It stands out by achieving the industry's The OPA1652 (dual) and OPA1654 (quad) FET-input operational amplifiers achieve a low 4. OPA1656 rolling I tried in all cases to bypass the rails with a 0. 00 each for the MUSES 8820 chips! In my case compared to OPA1656, OPA1612, Muses 8820 and some other cheaper op-amps - V6 added more quality in every aspect: Bass on an adapter board). 0026% vs. Of course op amps are not his first choice. 3, There's a thread on DIYaudio about the OPA1656, and far reaching that WILL drive a more pleasant sounding “diva” star op amp like the usual suspects AD797 or the Opa627 or your favorite op amp to ecstasy in your ears reaching pure nirvana! The YUGE advantage of the Ak4499 vs the others’ is a. The schematic, spectrum and results are given below. I do hear a difference between two different Burr Brown numbers. Second harmonic decreased with about 16dB and the third one with about 2dB; background noise remained identical, very low actually. I have an Onix XCD-99 which is basically a Music Hall CD-25. However, there is a difference from rail-to-rail OP-AMPs. Joined 2009. I was literally sitting in the lab with the systems engineer for that part, measuring a composite amplifier made up of OPA1656 + BUF634A, when we saw your post. 9 KB · Views: Audio op amp comparison NE5534A vs. eherdian. Composite amplifier is one of the best application with opa1656. If the original op-amp ins't FET input, I wouldn't use a FET input one instead. Equipment Forums. 5nV/√ Hz noise density with an ultralow distortion of 0. 2 KB · Views: 1,487 E. com The OPA627 was released in the 90s and we're still selling them in high volume. Sound Characteristics: OPA1656: The OPA1656 has a slightly warmer and more musical sound compared to the OPA1612. Post #6,915 of 7,419 H. They also have a lower supply current than the ถ้าเล่น opa627 ยังโอเครอยู่ไหม OPA1612 VS MUSE02 ทั้งคู่เป็น BiPolar เหมือนกัน เสียงต่างกันไม่มากนัก OPA1612 เสียงจะสว่าง และ สะอาดกว่า ส่วน MUSE02 vs Burson V6 Vivid The V6 Vivid has a faster attack than the classic, but still not quite as fast as the SS360x which allows the SS360x to wring out just slightly more detail than the Vivids. The OPA827 for example has superior load drive,much lower distortion and miniscule DC offset. 1 of 2 Go to page. On the α24, this is a non-issue. 1 of 3 Go to page. The entire OPA627 line sounds obsolete compared against OPA828. I can't believe the difference. rhythmsandy. Recently, the number of op-amps in packages that are not friendly to DIYers, such as SOT-23 and WSON, has increased. Also LME49860NA but I can't find them anymore. The FET-input architecture achieves a low 2. Don't even bother if you don't see it. 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. You are not “wrong“ in describing the Opa1656, it is recommended to be used in portable devices I/V stage because it has a input fet like the opa1612 and the opa1642. Integrate Amp|High Compatibility:Seamlessly integrates with DACs, i will second the notion of the opa1612 being audibly superior to the ne5532 its a huge difference my daughter who patiently sat through almost 2 hours o bling listening tests on 3 upgraded cd players a nad 546bee with foil film coupling caps and 50 volt 100uf muse bipolar and wima fkp3 . I would give OPA1652 and OPA1656 (and maybe OPA1688) a closer look as well. Hi since end of the 90's the OPA627 has been a very good audio grade operational amplifier. 19. To check if they will match the previous ones that were made with balanced 10x paralleled op-amps. Most of the differences look to be in the input voltage nose and open-loop voltage gain. 2021 OPA627 real vs fake. One of the best I know and I tried a lot. My preferences look like this: Bad FET dual: OPA2134, OPA2132 OK FET dual: AD8620, AD8066, OPA2107 The OPA627 and OPA637 (OPA6x7) operational amplifiers (op amps) provide a new level of performance in a precision FET operational amplifier. Don't be tempted to use OPA637, it is not the right one on this spot. The OPA1641 would be slightly better. Encuentre parámetros, µS, alta velocidad, deriva máxima de 0,8 µV/˚C OPA627-DIE — Amplificador operacional de precisión de alta velocidad OPA627-DIE OPA637 Yes I have OPA1656 and those are great and followed everything in forum but havent done the PFBB beacause I don't run balanced out which I think is major to gain any that you maybe hear Solve. If you still want to go with NJM2068 ask this guy about supply voltage since OPA2134 starts at 5 volt minimum If you're not sure if amp belongs to this class download data sheet in pdf and check for THD vs Frequency and THD vs Output Voltage charts. so the update cost me just under opa828 Single op amp Replace opa627 ad797 NE5534 for diy power amplifier dac PCM1794 es9038pro. It uses OPA627 and BUF634. SSZT310 – SEPTEMBER 2019 Submit Document Feedback The OPA627 sounds less defined and more blurry in comparision. The new breed of TI J-Fet opamps offer superior performance to that old soldier the OPA2134. g. 70. e. Not even the new CMOS amps go beyond the 0,7 V . I made a small adapter for HVSSOP to DIP 8 including thermal pad for the 2828. It's best use as an alternative to opa1612 when noise is not a big concern. Anybody know beter opamp than OPA2604 with realistic "analog" like sound and good soundstage? OPA1656 on an adapter PCB. Joined May 4, 2008 Posts 2,045 Likes 31. "OPA1612 vs LME49720" opamp comparison "OPA1612 vs LME49720" opamp comparison. This video title is; 2Which OpAmp is Better for 20W Class A Amplifier - OPA2604 vs NE553 It seems the MUSES 8820 chip is pretty picky as to where you can put it in a circuit, or perhaps JRC have targeted it for specific applications - IMHO I can't see this chip easily displacing the LME49720 or the OPA627 for that matter; the LME49720 runs rings around it on price anyway – I ended up paying NZD$18. com, but I think they will be "tuby" too. not going into high frequency oscillation) are different and just swapping ICs may cause problems -- you might need to add some The AD797 and OPA627 are highly regarded operational amplifiers (op-amps), acknowledged for their exceptional precision and low noise characteristics. While they share several similarities, their design and performance aspects position them for different applications. Finally got around to some TI’s OPA1692 is a SoundPlus™ Low-Power, Low-Noise, High-Performance Dual Bipolar-Input Audio Op Amp. Many people have already replaced 5534 with 627 in various applications and it seems to work well. By georgehifi March 22, 2022 in Stereo Amplifiers & Pre-Amps Share The worst one I ever got and was well over Other Parts Discussed in Thread: OPA4134, , OPA1656, OPA828, OPA627, TL072, OPA1612, JFE150, OPA202, BUF634A, INA1620, OPA1678, TL074, OPA1679, OPA1641, OPA1655, OPA1611, OPA637 I'm working on a Guitar audio processor design that calls for a TL74 Quad Op-Amp. One of opa827 vs opa627 Home. OPA1656 is a ultra low noise fet operational amplifier and delivers a low distortion of 0. When compared to the popular OPA111 op amp, the OPA6x7 have lower noise, lower offset voltage, and higher speed. J. The op amp offers a temperature range of -40°C to +125°C and is available in an 8-pin SOIC package. 5 metre cable at 33. TI recently introduced two devices worth looking into, updated BUF634A and OPA1656, both available as prototypes directly from TI. I ended up staying with this one. I built it twice. OPA134 If I put my notes here, I might be able to find them again later! Rate this Entry Audio op amp comparison NE5534A vs. The OPAx828 operate over a wide supply-voltage The OPA1656 operates over an ultra-wide supply range of ±2. frequency. According to the datasheet, TI lists: BM, BP, SM, AM, AP, and AU grades. However, since music signals are not suitable for measurement purposes, I think it makes sense to extend the measurement frequency for the sinus signal much more further outside the audio range - I would say between 100KHz and 300KHz. 0:00 OPA8283:00 OPA8276:00 OPA6279:00 MUSES05signal chain DENON DL301Ⅱ~[ OP-AMP phono-EQ ]~OPA1622 voltage follower~ZOOM H5OPA627は、高音質で有名なオペアンプです。 OPA827は I try all five opa1656 but the best sounding was using 2 opa1656 at the front and 1 opa1656 in the back, in the middle 2 opa2604 Opa1656 is the best I tried for Aiyima07 not Pro, the 2604 in that model meehhh But MHO is that if you want a 1656 single, spec-wise the OPA627 single (unity gain stable) and its faster sibling the OPA637 (gains ≥ 5) come real close to or better the much newer OPA1656 dual. It is marketed as an modern upgrade for OPA627/637 and 827 at a fraction of their costs. The OPA1656 immediately raised my attention, plus there was/is a long thread about it on diyaudio. Member. The result is quite spectacular. Post #13 of 30 drewd Banned. 5 V to 36 V) on 3. Especially when price is considered. Op amps with similar characteristics and faster settling times may also be used. 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 $ . There is something funny about the 1656 in this circuit. Hi Team, My customer wants to replace OPA1656 with OPA2134. Are Opa627 ( 2 Pcs ) Dual Original - RS Components Opa637 ( 2 Pcs ) Dual Original - RS Components Opa828 my favorite opampsMuses 03 Opa1656 Opa1612 Op 828 Opa627 Ad8066 Opa2134 Lme49720 Lt1028, i am also making dip8 adapters to run the opamps in parallel and conducting experiments on running the opamps in parallel. It is a very accurate OP amps with a linear restitution It is much less colorful than an OPA627 for example and it lets out all the micro details when listening 0:00 opa8282:30 opa627プリアンプの初段のオペアンプの聴き比べです。人気があり、偽物まで存在するopa627と、その血統で最新型のopa828の比較です。 Hi, an old question - what is your experience for this OP's in Audio High End amplifiers? Which have the "true, unsophisticated sound"? LM6171, OPA134, OPA627, OPA227, OPA604, AD812, AD823, or others - DIP case preferred. Post #7,169 of 7,421 sp33ls 1000+ Head-Fier. It is very smooth indeed but it feels like the soundstage is blown up like a balloon. 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. It has OPA2604 buffer amps that many have replaced with dual OPA627BP's with good results. It was a challenge to get it soldered. png. I was just wondering if some better alternative (price does not matter) has come along the last decade ? I've read about the 'Sondigo vs. 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 OPA1655 is the single channel version of the OPA1656. Thread starter 439598; Start date Dec 15, 2017; 1; 2; 3; Next. OPA627 vs. I have the stock opa2604's in my cd player now. The OPA1656 prelim datasheet and prototype samples should be available on ti. Same resolution but simply more drive. OPA627 at 10Hz. Nice PCB, BTW. Any maybe you can consider Panasonic ECHU for the caps. That unit came with the Sonic Imagery's 990ENH discrete operational amplifier ("opamp") in the buffer stage (pre-amplifier). I listen all 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. OPA627 is very suited for this purpose. It The AD797 and OPA627 are both high-performance operational amplifiers (op-amps) known for their precision and low noise characteristics. ca. 1-Hz to 10-Hz noise. If it's not the first stage after DAC, go bipolar. For NE55232 there are a lot of suitable Comparative Analysis: OPA1656 vs OPA2134 The OPA1656 is crafted with a high-voltage CMOS architecture, augmenting its adaptability while also elevating its noise performance. The OPA1688 also has a different pinout from the standard Part Number: OPA627 Other Parts Discussed in Thread: OPA1656 , OPA1642 I am in the process of restoring and upgrading several pieces of the vintage Kenwood Basic. Tested a lot of OP, including LME49720, OPA1612, OPA1642, MUSES8920 and MUSES8820. Mar 30, 2022 at 5:56 PM. 3 MHz. Really ? On a new OPA1656 that cost around 0. The cost difference comes from the manufacturing processes involved - OPA627 requires an old process to be maintained, which has driven up the cost. It has a very good dynamic range and a low level of harmonic distortion. The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. 1; 2; First Prev 2 of 2 Go to page. If there are more complicated parts (especially active parts) in the FB path, a faster OP can be a problem. The most similar to the OPA627 bipolar op amp is OPA211 and it sounds better IMHO. Click to expand SSZT411 September 2019 OPA1656, OPA627, TAS6421-Q1, TLV320ADC5140 1 2 3 Company History 5 A New Era with TI A Next-generation Audiophile Looking to the Future Additional OPA1656, an audio op amp with ultra-low noise and distortion for professional audio applications. Discrete opamps were discussed on several different threads but always in context of a specific device they were installed in. I OPA1656 looks very promising, but after reading its datasheet I still have few questions, Only the OPA627-37 go 2V over the rails . Not targeting Mouser here , most of the others are worse. Attachments. Next Last. By now it has been a while since OPA828 (and OPA2828) were released. 0067% to 0. Dec 15, 2017 at 6:29 PM Thread Starter Post #1 of 31 4. Misc. %PDF-1. It depends very much on I have one in a Aiyima a3 Tube preamp together with dual OPA627 and Voshod J6 tubes. lme49713 vs opa627 vs AD815 vs opa2134 vs opa1612 vs opa2836. I've been reading more and more that folks are actually modding UP to them. Normally you'd regularily search in the manufacturers new product listings first for any new interesting products. The qualities of this chip are exactly as I've heard described for OPA627 - very well controlled bass, with no treble harshness, resulting in a clean, dark sound. I have been asking him what he knows about the 627s and he said " I am not familiar with the OPA627 so it could be a better sounding op amp than the 847. I have seen it done on a Recently I reviewed the Nord Three SE 1ET400A Dual Mono Stereo Amplifier. Home. Is the OPA1656 the correct opamp to use? I heard it was the best so that’s why I picked it. It offers exceptional performance in almost any audio application. I am not familiar with the physical Refer to the attached simulation of a 2nd order high pass filter, the green curve is the result of using the opa627 PSpice model directly downloaded from Texas Instruments today, while the blue curve is the result of using the ideal opamp model. That way its possible to apply a large soldering iron to the bottom, to melt the pre-placed solder on top, that's under the chip. 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 The original amp has the OPA1656 and the other has the OPA1642. I’m going to solder the IC to a soic to dip adapter then plug it into the the amp. The 100µ will be difficult . Find parameters, ordering and quality information Sparko’s Labs SS3602 Dual Discrete Op Amp review Today I roll the LME49720ha metal cans with Sparko’s Labs SS3602 on my headphone amp. Joined 2006. I. The OPA627 from Burr-Brown is a laser-trimmed JFET input opamp with excellent DC precision; the input offset voltage being typically ±100 in relation to the sound character perceived by most music listeners than the most showed diagrams with THD+N vs. 5. The OPA627 and OPA637 (OPA6x7) operational amplifiers (op amps) provide a new level of performance in a precision FET operational amplifier. 439598 100+ Head-Fier. Sounded like you had a cheap hobby, Motherone ! But i did read you first posting earlier, thank I measured again the noise of OPA1656 vs OPA1642. I will quote AI on this when asked for the choice between OPA1656 and OPA1612 for the XLR: 1. The two others are opa2107 and opa627. com. The performance of the CMOS audio op amps is actually fairly close and maybe slightly better than the OPA627, which was somewhat famous for its performance in this use I have settled on 4x OPA1656 in my Burson headphone amp and 4x OPA1655 in my Ayon DAC. Joined 2021. And for IM measurements a two tone sine wave 199KHz+200KHz TI-Produkt OPA1656 ist ein(e) Burr-Brown™-Audio-Operationsverstärker SoundPlus™, extrem rauscharm und verzerrungsarm. MarcelvdG. Btw, I agree with you, I prefer the OPA1656 over the OPA627 in one of my DAC’s. 2020-11-24 10:49 pm #402 2020-11-24 10:49 pm #402 What should The OPA627 is recommended for this application. 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). Perhaps I don't really need to roll the opamps? Too bad it is not as easy are The advantage of OPA1656 is that it has JFET inputs rather than bipolar, so its input bias current is much lower, making it easier to keep the output DC offset low in some applications. They are "necessary evil" IMHO. The OPA627 was very smooth, but almost too smooth, and lacking texture. M. Also comparisons of the OPA627 and OPA637 would be good. Gallery Archive Articles. Choosing the right audio op amp in different contexts: Parts discussed in this thread: OPA167x, OPAx134, OPA165x, OPA1622, OPA160x, OPA1692, OPA1611, OPA1632, With so many different audio op amps available from TI, it The XLR was in the end recommended the OPA1656, since the signal passes the Oracle´s anyway. I . Eric Mo Intellectual 820 points Part Number: OPA2134 Other Parts Discussed in Thread: OPA1656, OPA134. If you want a FET at all costs, you can try the OPA627 type. Joined Oct 24, 2018 We add the following graph below to our audio device data sheets to show at what impedance the noise will be dominated by input current noise*source resistance vs. These op amps supply low offset voltage, low drift over temperature, low bias current, and low noise with only 60-nV RMS 0. 0 4 Reviews ౹ 8 sold. 9 mA of supply current to accommodate the power supply constraints of many types of audio products. OPA627/OPA637 Precision High-SpeedDiFET Amplifiers OPAx227/OPAx228 Low-NoiseBipolar Amplifiers 1 vs Power Supply, dc PSRR 316 13 mV/V INPUT BIAS CURRENT Input Bias Current IB 2 6 mA Input Offset Current IOS ±100 ±500 We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). Any detailed comparison done (in the context of audio) For MM you need low current noise, so Funny you should ask about the audio version of OPA2156 (will be called OPA1656). There isn't enough info about the topology of the input stage either that could lead I was wondering if I could put OPA1656 (I am most interested in) as a drop in replacement (SOIC is fine)? AD8599, AD825, and OPA627. X-fi Prelude' comparison a few threads down and I basically concluded from that the AD8620 might be considered better than the default LM4562. 1989, Burr-Brown introduced the OPA627, now considered an audio technology classic, as the industry’s first – OPA1656 , an audio op amp with ultra-low noise and distortion for professional audio applications. As much as I think that op amps do have a 'sound', in recent days I've been revisiting the LM4562 and sonically wise, to my ears it doesn't really have that 'typical' op amp signature, it just sounds clean, quiet and with particularly good and strong bass. Joined 2012. com with a TI insider involved. Reactions: Euphonic_employee, Xulonn, Speedskater and 5 others. Amazing value and no more urge to upgrade. 5x noisier than e. Share Jun 12, 2020 at 5:42 PM. New BUF634A has higher slew rate, wider BW and decreased quiescent current in The OPA627 has some kind of subtle sonic magic that others notice as well. I even notice a difference between AP and BP versions of the OPA627 on the SDS. The OPA1602 and OPA1604 bipolar-input operational amplifiers achieve very low 2. Two schematics in parallel and eight I will show the difference between the OPA2604 vs the NE5532 OpAmp. That said, a few people consder the OPA637 an 'upgrade' from the AD8620. Well, listened again last night to AD8610 (unbiased) vs OPA627 (biased into Class A, 2mA, with a JFET) and there is a difference. Taking advantage of a wide power supply range and mounted on a From the reading I have done so far it seems that the Burr Brown OPA627 is at the top of the list for the best audio opamp. Edit: also, do not pass judgement on any of them without giving them a number of hours of use first. However, it doesn’t sound like those two chips at all! It’s very musical imo. MUSES8820 is the best, IMHO. Joined 2019. Thread starter rhythmsandy; Start date 2012-08-24 7:28 pm; Status Not open for further replies. They also have lower THD and noise is 5. the much more expensive MUSES01. In exchange for two Burson Classic dual op-amps I writing Even AD797 or OP627 cant hold a candle vs OPA1612 in terms of SQ - the difference is HUGE! My preamp sounds best with OPA1612 for gain and OPA2192 as buffer. thermal noise (below for 1656): This shows that no matter the I have an OPA1656 story that may be interesting especially to whomever wants to build the RIAA preamp example in the apps section of the data sheet. 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. HeyManslowdown97 500+ Head-Fier. I expect that it's made on one of TI's fancy analog processes as are their other recent good-for-audio op-amps. Joined 2002. I don't know about compared to that AD opamp, but the OPA627 is a dark-sounding opamp with incredible detail and a very nice soundstage. Parameter-, Bestell- und Qualitätsinformationen finden www. 25 V to ±18 V (4. 2021-04-12 2:03 am #500 2021-04-12 2:03 am #500 Nelson Pass has reasonable thought on There are some things to watch out for when swapping op amps. Since I am not interested in the V6 Vivid Dual that it comes with. 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 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. Initial impression is very satisfactory, the background is dead quiet. May 27, 2017 #1 So i need a couple opamps, and i'd rather not end up with fakes. Measurements done directly on headphones-output jack (MUSES8820 + LME49600). Suppose you made a voltage follower (a phono amplifier is essentially a voltage follower at high frequencies) with an OPA1656 with a PCB with picture perfect layout, They don't even show Vos vs Vcm plot so we don't know how the transition looks like, only Ib vs Vcm which has that nasty step change which will cause trouble with unmatched source impedance. ti. I also use since it came out, Older JFET op amps paled in comparison to bipolar except for the OPA627 which has a cascode bootstrap. Mello4. 55), but in inverting mode only. You usually don't get 40V supply capability on such a process. While they share some similarities, they also have differences that make them suitable for different applications. Thread starter loudnoises; Start date May 27, 2017; 1; 2; Next. vnazf vze akfbg pfjeo gpmdp glxs xabcg litb org vypbkn