Opa1612 vs opa1642 forum. DSD LPF used OPA1602 which is an ultra-low noise OPA.

Opa1612 vs opa1642 forum Thanks, Sherlon Kauffman. Hello. Joined Sep 4, 2021 Messages 10,167 Likes 17,922 Location UK/Cheshire. In I/V stage: - MUSES8920 is very like: NE5532, LM4562, NJR2114, OPA1602, LME49720, MUSES8820, MUSES8920, OPA2604, OPA1642, OPA2132PA, AD8672, AD8599, MUSES01, MUSES02. Opa1642 4. The dual version of the OPA1641 is an OPA1642, but I'm confused as I believe that neither the Burson nor the OPA627 are duals. 25 V to ±18 V TA = –40°C to +125°C(2) 0. 00003% at 1kHz. Featured Although specifications of OPA1612 (bipolar) indicate they are superior to that of OPA1642 (JFET inputs) in practice OPA1642 performs TI-Produkt OPA1612 ist ein(e) SoundPlus™ Audio-Operationsverstärker mit 1,1nV/√Hz Rauschen, niedrigem THD und Präzision. TI E2E™ forums with technical support 2. OPA1612 PDF,OPA1612TI. For OPA1642, the Switching to the OPA1612 and the OPA1642 doesn't appreciably change the measurements of the MC stage. opa1612 is a nice unity gain stable opamp that does reasonably well as a buffer as well as in the VAS, reasonably priced etc. I try to use a cheap component like NE5532P, no noise, with OPA2134 no noise with the OPA1612 a lot of noise. Only unmoderated members can post here. English. Trying to declutter and am clearing out a bunch of DIY related things. OPA1612 OPA1642 AD8022 AD8066 LT1361 LT1364 Eliminated for various issues LT1469 - rather thin, very clean AD8599 - too thin, very clean, excellent high treble The Vendor's Bazaar forum is for commercial offers and transactions. The OPA1612 is considered to be better than the OPA1642 and is in many of the top DACs measured up here (including the Z8). Audio, Audio, Audio! Amplifiers, Phono preamp, and Analog Audio Review. . Dear TI E2E support, Hi there, Our team made a prototype of a phono-stage amplifier (pic. 1) Ian Canada McFIFO / McDual XO - $150 shipped Originally purchased for use as a clock buffer for a miniSHARC based 8 channel DSP AES output project. DSD LPF used OPA1602 which is an ultra-low noise OPA. I'm seeing something unexpected with regard to the bias voltage. Please return to Audiogon. OPA1612-Q1: 1Mb / 31P [Old version datasheet] SoundPlus High-Performance, Bipolar-Input Audio Operational Amplifier Burr-Brown (TI) OPA134_071: 403Kb / 14P: High Performance AUDIO OPERATIONAL AMPLIFIERS OPA134: We have several very low noise audio op amps that would be good replacements for the JRC devices. OPA1641, OPA1642, OPA1644 SBOS484D –DECEMBER 2009–REVISED APRIL 2016 OPA164x SoundPlus™ High-Performance, JFET-Input Audio Operational Amplifiers 1 1 Features 1• Superior Sound Quality • True JFET Input Operational Amplifier With Low Input Bias Current • Low Noise: 5. Forums. Opa1612 ( sounded almost as good as lm4562, very small difference ) 3. The OPA1642 is also Now i tested opa1612 with lme49720 and 1612 is better in my opinion. To answer your first question: the difference between the OPA1611 and OPA1612 is that the OPA1611 has 1 amplifier in the package, while the OPA1612 has two. Part Number: OPA1642 Other Parts Discussed in Thread: OPA2140 , OPA827 , , OPA140 OPA827, OPA2140 & OPA1642 source impedance and distortion issue. These three Op-Amps sounds great. The LME49860 has a wide supply range of ±2. Авито доставка не включена в стоимость (+5%). Re: OPA1656 instead of OPA1612. For example, Aol for the OPA1656 with a 600 ohm These devices operate over a very wide supply voltage range of ±2. 1mV) give the amplifier excellent operational amplifier DC performance. Tangent didn't mention AD826 and LT1364, which are my best choices. pdf (sorry, pasting the address makes a huge link) you use a ~50 ohm isolation resistor. The output swing for Aol should be considered as it is different between the two devices. Jul Tubey, better late than never - I just replaced all NE5532 amps in Benchmark DAC1 with OPA1612 and play it so far for few hours. Andrea: Member. The NE5532 is used everywhere as its sound profile is designed to catch people's attention. равномерное звучание всего спектра, ничего не «завалено» и не шумит-гудит. Remember voltage outputs are low impedance outputs and I do not known how connecting the like DAC voltage outputs in parallel will affect performance, noise and distortion compared to a single DAC output driving the OPA1612 inputs. Jan 14, 2023 #7 fpitas Yes it is, but for that plenty of other options are available. try modding with I also have both the OPA1642 (FET-input) and the OPA1612 (bipolar input) in stock and I think these would be interesting candidates as well. Did you tried OPA1612? I wish to hear something about OPA1612 vs LM4562 M. Find parameters, ordering and quality information I can see that a lot of hobby builders tend to use the discrete solution, but I can also see that some of the high-end Op-Amps are hitting distortion and noise figures that i would think is hard to beat like the OPA1612 with its 1. 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. more specific, the Standard Edition is supposed to have the OPA1642 while the Master Edition the OPA1612. This is about the same experience with op swapping I have with both a07 and two Aiyima a04, a very similar amplifier to the a07, but with tpa3251. The OPA1622 is a slow device compared to the OPA1612/OPA1656. It can be replaced but you'll get diferent sound character. Yes, it's a very subjective question, so what I am looking is the highest class of sound -- In my opinion, also as said by Tangent, the openness and the cleaness of OPA627/37 put them into a higher league that OPA2604 and The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications. There is a sound difference when switching from the stock ne5532 . Thread starter rhythmsandy; Start date 2012-08-24 7:28 pm; Status Not open for further replies. 000015% THD or the OPA1642 if JFET is the way to go. I've done this with older parts for years (LM833, TL072, etc. I no nothing about this. были заменены на muses8920 все 4 операционника — слушателям понравилось звучание. lme49713 vs opa627 vs AD815 vs opa2134 vs opa1612 vs opa2836. Stability should be considered especially with the wider bandwidth of the OPA1656. OPA1642 ~ 2 Euro OPA1656 ~ 2. The OPA1602 and OPA1604 series of op amps offer rail-to-rail output swing to within 600mV with 2kΩ load, which increases headroom and maximizes dynamic range. I have interested in low ESR Electrolytic Capacitors to power the Opa1612. Что куда лучше Here’s a great article comparing opa2156 CMO vs opa1612. Transients are stronger, both rimshots of snare drum and big-band trumpets. 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. AudioFans Member. 25 V to ±18 V ±0. 25 V to ±18 V, on only 3. But I'm suspicious that they are fakes, someone TI E2E support forums I should have done my research a bit better because because I overlooked OPA1612 which is purported to have superior performance compared to LM4562. I suggest the following reference - 994Enh Discret Part Number: OPA1642 Other Parts Discussed in Thread: TLE2426, , OPA1656, JFE150, JFE2140, OPA1612, LME49720, OPA891. Oct 2, 2021 #24 audio2design said: ( the others I tried: opa1642 opa2134 and opa1612 ) Last edited: Oct 2, 2021. 🙄 Additionally the OPA1642 sounds fine to me with the PCM1793 chip. In addition, the OPA1612's circuits are totally independent, to considerably limit crosstalk and interactions between channels. OPA Chips – OPA1612 with ultra-low noise and low distortion 1KHz LM4562, LME49710, LME49720 Start-up Behavior - Pro Audio Design Forum In SMT the OPA1612, rated at 40V absolute maximum, is a very good part. The OPA1602 and OPA1604 bipolar-input operational amplifiers achieve very low 2. It was recently re-capped and all new guts put in . Tfive. These devices operate over a very wide supply voltage range of ±2. The amp But according to re-sellers like audiophonics. PA Op Amp PME VOS Input offset voltage VS = ±2. g. I must test muses now. I suppose that is what you will learn when you try the connection and make the measurements. 1 nV/√Hz at 1 kHz Not to sure whether its still available, you can register with Brown Burr on the Texas Instrument site and provided you are doing R&D not for military purposes, you can order the OPA1612, OPA1642 on SOIC devices free as SAMPLE for R&D and place them on an adaptor that converts from SOIC to dip 8. com OPA1612, MUSES8820, OPA1692, LME49723 and the NJM8801. Hi there probaly a simple question maybe not. Reactions: Bonsai. For the EQ I would suggest OPA2132 or (slightly worse) OPA2134. OPA1612 is bipolar input opamp. During testing, OPA2134 and OPA1612 came out good. I used opa1642 in Part Number: OPA1612 Hi, Somebody has already asked THD+N vs Supply Voltage of OPA1612, but the datasheet seems to wrong. One good example is XU09 portable headphone amplifier. The performance specifications are identical, the OPA1612 is just meant for Part Number: OPA1642 Tool/software: Dear Texas customer support, We have used component OPA1642AIDR a few times in our production. Please confirm your currency selection: Mouser Electronics - Electronic Components Distributor. My phono preamp, bye the way, uses OPA1611/1612 and OPA1641/1642s- amongst others. Find parameters, ordering and quality information opa1612 — звук почти что точный и ровный с небольшим уклоном в басовый регистр, opa2141 — по звучанию схожи с opa1642. Now all the folks are using opa2134 op -amps as the replacement. Attachments. Part Number: OPA1612 Hi I am designing a IV stage and summing using opa1612. Details; Discussions; Posts; This discussion; You must have a verified phone number and physical address in order to post in the Audiogon Forums. Joined Feb 29, 2016 Messages 10,805 Likes 15,984 Location London. Clock System – Accusilion Femtosecond oscillators with noise reduction and improved jitter VS high precision crystal oscillators on the standard DMP-A6 3. These are all well recommended: OPA1642 The OPA1641 would be slightly better. Marketplace Home. try the OPA1612 (if input current isn't a big problem). opa2211 — звучание нейтральное, I've read good things about the OPA1642 in the super long CNC thread. We tried OPA1612, OPA1656, NE5532, Forum Home Amplifiers Solid State Pass Labs Tubes / Valves Chip Amps Class D Power Supplies Headphone Systems. OPA1642 was clearly beat by OPA1612 being more "rocky" and forward. Мне видится в i\v OPA1612, а в lpf OPA1652. DMP-A6 MASTER EDITION: DMP-A6: Appearence: Some gold details on the case: Silver: 2 high precision crystal oscillators: OPA Chips: OPA1612 with ultra-low noise and low distortion 1 KHz 0. OPA2209 does reproduce sub bass as deep or deeper than OPA1612 but the latter has a pretty significant Знатоки - подскажите, в хочу попробовать в своем PCM1704 ОУ из линейки SoundPLUS. With any of them the V-DAC goes up a level and becomes competitive with more mid-price DACs at a bargain used price. diyAudio provides this forum for the convenience of our members, but makes no warranty nor assumes any responsibility. Technically the full-scale input should be about 1. tnt-audio. Forum Donor. Contact Mouser (USA) (800) 346-6873 | Feedback. 540B1536-57EA-4D11-A9B2-BD108CBD6A76. I know well the opa1612 in the output stage of DAC and while it is good I prefer the sound of AD4898-2 for that application. The AD opamp is more expensive though than the OPA1612. 000. Noise should be kept to the minimum possible. 1nV/√Hz Noise, Low THD and Precision. OPA2228 and OPA1612 over OPA1642 because of the input noise that makes it sound less pristine. Plus they come standard in the 8-pin DIP package. Joined Sep 4, 2021 Messages 9,773 Likes 17,053 Location UK/Cheshire. It's best use as an alternative to opa1612 when noise is not a big concern. 6 mA but I know I’m in the Op amp thread so I don’t want to take the thread off topic. 25 v до ±18 v : 0. TI’s OPA1692 is a SoundPlus™ Low-Power, Low-Noise, High-Performance Dual Bipolar-Input Audio Op Amp. 5 V to ±15 V • Shutdown current: 0. Hi, can I use OPA1612 as input buffer for audio application? I'm trying to understand if the input diodes can cause some problem to the audio signal. по отзывам ОУ: opa1612 + opa1642 — не понравился всем слушателям. It accepts multichannel I2S and will buffer / reclock input data using oscillators on the McDual XO. Output Current characteristic curves seem to behave in opposite manners. The OPA1642 is significantly inferior to the OPA1612 in many regards (GPW product, output drive, distortion vs output load, input voltage noise for example). Marketplace. The Audiophonics OPA1612 is mounted on a DIP8 bracket and can therefore be easily installed on a PCB with a OPA1642). The OPA1641, OPA1642, TI E2E™ forums with technical support from TI engineers View all topics. " but I think that is not the case As the title says: What are the good general purpose audio op-amps these days? Last time I did anything audio-related I would've reached for the NE5532 & friends, but I assume better devices have appeared in the last 20+ years I'm toying with the idea of building a couple of custom small audio mixers for basic sound reinforcement / recording use by a local non-profit TI’s OPA1612 is a SoundPlus™ Audio Operational Amplifier with 1. I want to know the mechanism of failure. The OPA1612 has lower noise and distortion After working with some OPA1612 on my recent Topping PA5 D01 Module replacement Site Site Announcements Forum Problems & Feedback Terms and Rules. I tried opa1612, opa1642 , opa2134 and LM4562 and did extensive listening tests during some days, long term listening . TL072 is not in the same league, I replaced those decades ago already for better performing types. (800) 346-6873. The OPA1642 for instance has a diff input voltage max to the supplies. Another interesting thing is that the power consumption is lower – in fact so low that without the LED my lab supply is showing a consumption on 0. Hello everybody, I read on several forum the advantage to use specific AOP for the final stage of DAC or Amplifier. It has the most stable input capacitance vs. Goggle bill d mod carver c-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 6. Mouser offers inventory, pricing, & datasheets for Texas Instruments OPA1612 Series Audio Amplifiers. VerticalScope Inc. The GBW is a little small but who know, maybe it sound very good, why not. 00A for both rails (it’s not very sensitive). Two identical gain 11 amplifiers were tested. Joined 2018. 5V to ±22V. 2nV/rtHz), the OPA1642 which is a FET input op amp and then the newest part that is currently in development is the OPA1602. 000 руб. I had read it many times before posting this threat. Which is slightly lower performance than the OPA1612 bipolar op amp. 25 V to ±18 V. Extensive listening test showed me that the best sounding result was with the lm4562. OPA1652 Vcm Range: You can see below that if I have 2. These devices also have a high output drive capability of ±30 mA. the lower the noise the more 'air' in the soundstage so I would recommend OPA1642 its noise is way lower than OPA2604. The OP1656 is the exact opposite, while still being detailed. Svadim79, if you have some DC voltage between the inputs of the I/V converter, maybe opa1642 is better. 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. 5 Euro OP275 ~ 3 Euro OPA1612 ~ 6 Euro According to specs I would think the OPA1642 would be one of the best compromises cost vs performance wise. 25 V to ±18 V 0. DIY (Do-It-Yourself) Compared to OPA1612 however it's a toss. 08 I guess if you're in the "I-have-so-much-money-that-it-don't-matter gang", the 627 and 827 are viable options. com and various reviewers, they have different OP amps (Operational Amplifiers). Misc. Featured Vendors OPA1612 on paper has lower voltage noise but whether its lower noise in practice depends on the circuit impedances. The OPA1612 is generally used as IV stage for ESS DACs. pdf Site Site Announcements Forum Problems & Feedback Terms and Rules. Since I am a novice, I am assuming that the current specification is for unity gain applications? Forum Donor. In the original OP 275, such trouble has never occurred. When I do serious listening test between them, just an A - B testing, not back and forth, I found the OPA1642 creates more noise at upper frequency because of those high frequency details. OPA1642 on adapter, make sure to check decoupling and make sure to check for oscillation. However, I won't swap to an OPA1612 because I am sufficiently happy with the LM4562 performance. OPA2134 is basic hi quality Op-Amp and all rounder Op-Amp with great sound. These are SOIC8 size, but you can buy OPA1612 opamps on eBay pre-soldered on a SOIC to DIP adapter. Rolling opa1642, opa1612, muses8920, 2xopa627bp, lme49720na, opa2134. Other Parts Discussed in Thread: OPA1612 just bought at the local parts store, some units of the OPA1612. The single of the OPA1612 is the OPA1611. The Vendor's Bazaar forum is for commercial offers and transactions. Other Parts Discussed in Thread: LM4562, OPA2604, OPA1652, OPA1642, OPA1612, PCM56 Hello, I have a Technics SL-P990 CD player with a few opamps. try the new OPA1642. Opa1656 has good phase response at high frequency. The OPA1641, OPA1642, Precision Operational Amplifier OPA1612 TI E2E™ forums with technical support from TI engineers. Several reference are used on forum. It could be very interesting to test their performance: - SNR - Bandwish - slew rate -. OPA1612 has proven to be a very useful opamp for dac I/V and or differential summing. 2020-01-05 11:05 pm #15 2020-01-05 11:05 pm Other Parts Discussed in Thread: LM4562 , OPA2134 , OPA1612 , OPA1602 , OPA1642 Hello, I would like to upgrade the phono equalizer in my Technics SU-V8 amplifer TI E2E support forums Search These devices operate over a very wide supply voltage range of ±2. It offers exceptional performance in almost any audio application. Opa1642 sounds a bit smoother and silky at top end but a little bit fat in the mids. Joined Jun 16, 2020 Messages 11,546 Likes 20,690 Location Netherlands. 00005 : 10 В/мкс : 114 дБ : opa1662 : Звук точный и ровный с небольшим уклоном в басовый регистр, с ультра-низкими гармоническими искажениями. thuanth Posts: 5 Likes: 1 post Liked in: 0 post Joined: February 16th, 2018, 3:27 am Location: California Country: Top. Is the 2134 the right choice. Vivement conseillé ! (0) (0) This review has been posted for AUDIOPHONICS OPA1612 Dual OPA DIP8 EVERSOLO DMP-A6 MASTER EDITION VS DMP-A6. My own conclusions with MUSES: The LME49860's outstanding CMRR (120dB), PSRR (120dB), and V OS (0. Thank you! Better choices include LME49720, OPA2211, AD8599, OPA1642, AD8512, OPA1612, etc. Member. Other Parts Discussed in Thread: OPA1652, OPA1602, , BUF634, TINA-TI, OPA1612, OPA1656, OPA1642, I'm surfing the 'net to find some suggestion to improve the I/V converter, but I mainly find DIY'ers forums discussing about discrete components, no feedback designs which might be ok, OPA1641, OPA1642, OPA1644 SBOS484D –DECEMBER 2009–REVISED APRIL 2016 OPA164x SoundPlus™ High-Performance, JFET-Input Audio Operational Amplifiers 1 1 Features 1• Superior Sound Quality • True JFET Input Operational Amplifier With Low Input Bias Current • Low Noise: 5. OPA Chips – OPA1612 with ultra-low noise and low distortion 1KHz Other Parts Discussed in Thread: OPA1642, OPA1612, LME49860. I've just started working with the OPA1642A, and I want to use it in a basic audio buffer circuit. However, I Part Number: OPA1642 Other Parts Discussed in Thread: OPA1612, , OPA1652, OPA1688, OPA1662, OPA1602 Hello, I am looking at replacing the old JRC opamp in my phonostage of my amplifier. 1 nV/√Hz at 1 kHz TI’s OPA1656 is a SoundPlus™ ultra-low noise and distortion, Burr-Brown™ audio operational amplifier. These devices operate over a very wide supply range of ±2. In the previous orders we TI E2E support forums opa1612 : Звук opa1642 opa1644 : от ±2. Joined 2009. by amb » January 27th, 2024, 10:37 pm . And bias current vs common-mode voltage has a slope that adds distortion (H2) when source impedance isn't super low and well balanced while OPA2156 doesn't have that problem (but may have nonlinear capacitance vs CM voltage unless the input stage is bootstrapped like Forum Home Amplifiers Solid State Pass Labs Tubes / Valves Chip Amps Class D Power Supplies Headphone Systems. OPA1612 datasheet, cross reference, circuit and application notes in pdf format. My first tests were with an OPA1612 (equivalent to OPA2211) in the instrumentation stage, but I didn't manage to get the circuit ringing free under all circumstances due to sloppy wiring, decoupling and grounding. OPA1642 Vcm Range: The OPA1652 Vcm range is Vcc-2V. of a low order (inaudible up to around 1-2%) and those of a very high order, which always occur even with extremely low THD+N levels are still audible - go to fig. Part Number: OPA2210 Other Parts Discussed in Thread: LM4562, , INA1620, OPA1622, OPA1656, OPA828, OPA1642, OPA1678, OPA1612, BUF634A Pardon if any of the following has been covered. And what about low voltage applications? Old op-amps such as the NE5532 and LF353 are marginal for even 9V applications, let alone V or 3V, then there's the really crappy LM358 with horrific crossover distortion. ). Что куда лучше поставить, какой ОУ в lpf какой в i\v. The outcome was no great surprise Part Number: OPA1612 Other Parts Discussed in Thread: OPA1622, OPA1688 Hello, I am considering the OPA1612 as a headphone driver replacement for JRC2114. Should I expect any improvement from the OPA1612? Thanks. Oct 2, 2021 #7 Here The OPA1642 has more open at the high frequency, it is more detail but it noticeable sharp and edgy sound. 5V of common mode on the OPA1642 with a supply voltage of 5V then this violates the specified common mode voltage range and the inputs are pulled apart as shown with V- and V+ markers below. I am not sure which opamps to change in my Technics SL-P990 cd player. 5 ±1 mV dVOS/dT Input offset voltage drift VS = ±2. But for MC phono pre-amps a low noise bipolar input op amp like the OPA1612 would give the best noise performance. А именно: OPA1612, OPA1642 и OPA1656, OPA1612. Unfortunately, user feedbacks of DSD output are not good as PCM from another forum. common mode voltage that I've measured on any op amp. The OPA1642, SMT-only, is also a AMB Laboratories DIY Audio Forums. 1 nV/√Hz at 1 kHz 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. Знатоки - подскажите, в хочу попробовать в своем PCM1704 ОУ из линейки SoundPLUS. All five op amps have more than half the noise compared to the NJM4560. Last edited (for leaded packages at least) can be improved by placing output between +/- VS pins giving smaller loop area for output current I've also seen soic types with I have also tried opa1642, 1612 and 2134, but they are all slightly inferior to lm4562 soundwise in Aiyima a04. not going into high frequency oscillation) are different and just swapping ICs may cause problems -- you might need to add some I've seen people use OPA1642/1644 a replacements for Site Site Announcements Forum Problems & Feedback Terms and Rules. 2024-01-31 6:39 pm #627 2024-01 Sometime I use OPA1612, OPA1642 and OPA1622. 1nV/sqrt(Hz) and 0. cant really remember ad815, but plenty of experience with opa1612 and opa1632. Thomas helped me with choosing a suitable opamp, thanks again the – Slew rate: 72 V/μs – Gain bandwidth product: 180 MHz • Fully differential architecture: – Balanced input and output converts single-ended input to balanced differential output • Wide supply range: ±2. the datasheet says that in "G = 1 circuit a fast ramping input signal can forward bias the diodes because the output of the amplifier cannot respond rapidly enough on the input ramp. 15 V peak but in order to avoid damaging the ADC it must be kept under 3 V peak. DIY (Do-It-Yourself) Here’s a great article comparing opa2156 CMO vs opa1612. CMRR is not a big issue. Musician and DIY builder Expert in loudspeaker installation for optimal pace, rythm and dynamics. The NJM4560DX does not Part Number: OPA1642 Other Parts Discussed in Thread: OPA1652. So for a low cost the LM4562 or OPA2134. There are also some things replaced by LME 49720, but this has never been broken. 36-V, 1-MHz operational amplifier with rail-to-rail input to V+ OPA141 JFET-Input Audio Op Amps OPA1642 Forum Home Amplifiers Solid State Pass Labs Tubes / Valves Chip Amps Class D Power Supplies Headphone Systems. Reactions: TheWalkman. A. This is using the V-PSU, V-Link and SPDIF. 5). For some reason I refuse to use it as often as I can though, being CMOS. Parameter-, Bestell- und Qualitätsinformationen finden The Vendor's Bazaar forum is for commercial offers Do you have a microscope? Actually, the OPA1612 and OPA1688 are available in SO-8, not bad. It's FET, mainly specified for audio, very low distortion Forum Home Amplifiers Solid State Pass Labs Tubes / Valves Chip Amps Class D Power Supplies Headphone Systems. The OPA2134, in comparison to OPA1612, is more detailed but perhpas shrowded. The OPA1642 is the best choice that you can make other than incredibly expensive ones that provide very, very, slightly less noise and higher distortion. 1) base on the circuit in OPA1642's datasheet. 2 ma total. Unfortunatly with the new OPA1612 I have obtained a lot of noise on the output channel. 3 2 µV/°C PSRR Power-supply rejection ratio VS = ±2. 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. e. OPA1612 is fuller sounding - especially lower midrange but also more dynamic. DanielT The picture shows my op-amp rolling, I have tried the ne5532, opa1612, lm4562 and opa1642. NE5532 is a very good amplifier especially for the price ($0. 995,00 kr. At least it is my preference when associated with an AK-449x DAC. In note slyt630. 6V) and short to GND? There is no specific microphone spec currently. OPA1656 (CMOS) on an adapter is a winner too. Part Number: OPA1642-Q1 Other Parts Discussed in Thread: OPA1642. — Усилители: Opa1612, Opa1642, Opa926. georgehifi. Not quite ready to post my listening impressions of these two ICs yet, but it’s been quite OPA1612 otoh has the best sub bass performance I have heard. Thanks for the link. You can also try OPA1612 as buffer with OPA2822 for the headphone driver. Jim Williams Audio Upgrades Share Reply Quote. 72; OPA1642 = $2. Both (I believe have Fet-inputs) I should have done my research a bit better because because I overlooked OPA1612 which is purported to have superior performance compared to LM4562. The data sheet claims each OPA1612 uses 7. OP . The OPA1641, OPA1642, and OPA1644 rail-to-rail output swing allows increased headroom, making these devices ideal for use in any audio circuit. consists of 2 x 10 op-amps in parallel and the two 10s are 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. 1 nV/√Hz at 1 kHz 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 There are some things to watch out for when swapping op amps. 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. 500руб. Forum Home Amplifiers Solid State Pass Labs Tubes / Valves Chip Amps Class D Power Supplies Headphone Systems. 3 v caps, Service manaul Mega File Upload - hfe_technics_sl-pg440a_service. 6 Electrical Characteristics: VS = ±15 V at TA = 25°C, RL = 2 kΩ, and VCM = VOUT = midsupply, unless otherwise noted PARAMETER TEST CONDITIONS MIN TYP MAX UNIT AUDIO PERFORMANCE THD + N Total harmonic distortion + noise 0. 85 mA (VS = ± 5 V) • Temperature range: –40°C to +85°C 2 Applications Very many interesting notes. I'd like something between OPA637 and OPA1642. My question is (I cannot see it in the datesheet Forum Home Amplifiers Solid State Pass Labs Tubes / Valves Chip Amps Class D Power Supplies Headphone Systems. My understand if noise isn’t a problem the opa1656 is great alternative to the opa1612. The OPA1641, OPA1642, /√Hz Rauschen OPA1612 — SoundPlus™ Audio-Operationsverstärker mit 1,1nV/√Hz Rauschen, niedrigem THD und Präzision OPA1612-Q1 OPA1641, OPA1642, OPA1644 SBOS484D –DECEMBER 2009–REVISED APRIL 2016 OPA164x SoundPlus™ High-Performance, JFET-Input Audio Operational Amplifiers 1 1 Features 1• Superior Sound Quality • True JFET Input Operational Amplifier With Low Input Bias Current • Low Noise: 5. 6 mA of supply current per channel. OPA1612, OPA1642 and good old NE5532/5534A will do everything you ever need - perhaps not what you think you need, but perform well above human perception limits. Joined Nov OPA1612/2211 has excellent CMRR but PSRR isn't stellar and strictly follows OLG. Jump to Latest The OPA2134 is very ordinary, I consider it a side step to the NE5532. OPA1612 OPA1642 AD8022 AD8066 LT1361 LT1364 Eliminated for various issues LT1469 - rather thin, very clean AD8599 - too thin, very clean, excellent high treble Opa1612 review audiophile forum My configuration is PCM1704 to twice first-order inverting amp with series R and R||C feedback. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Manage Consent. Español $ USD United States. Valid comparisons between amplifiers can only be made by a double blind test. Might bench slightly better with OPA1612, but not likely to be audibly better. I have some further op-amps to try which require SOIC to DIP8 adapters which I haven't soldered yet. 1nV/√Hz noise density with an ultra-low distortion of 0. 5nV/√ Hz noise density with an ultralow distortion of 0. For a complete stereo setup, I will be using 30 OPA1612's with unity gain for the active crossover network and 8 OPA1612's for the parametric equalizer circuit which will have a 12 dB cut and gain. OPA227 has 2 diodes in series , anti-parrallel = 1,2 V pp, maybe PNP like OPA1662 ( has single anti-parrallel diodes) . I have no argument against the NE5532 other than it's a product of it's time. Dear Sir/Madam, While reviewing the datasheet OPA1642 OPA1612 OP Amp; TI TPS7A30/49 Voltage Regulators; Low, Med, High Gain settings; Clipping Indication (via Front Power LED) The Fora platform includes forum software by XenForo. However default 2134 is already pretty good and well-balanced - well-defined bass, good forwarded mids and non-fatigue highs. Фирменный чехол для fiio M11s — 1. Change Location. Analog output side, there is 6 sets of LM317/337 as power supply to offer R2R board/ DSD circuit / buffer circuit. But again, will the OPA1642 be audibly worse than the OPA1612 in this design? Probably not. Maybe not. The biggest disadvantage of all these considerations is that all exist distortions (THD+N) are lumped together in the diagrams and no distinction is made between THD components e. OK, start from scratch - on the diyaudio forum there's a highly regarded ES9038Q2M DAC + output stage, which uses quite modern opamps - OPA1622 for first stage, and OPA1612 for second stage. OPA1611, OPA1612 SBOS450C –JULY 2009–REVISED AUGUST 2014 OPA161x SoundPlus™ High-Performance, Bipolar-Input Audio Operational Amplifiers 1 Features 3 Description The OPA1611 (single) and OPA1612 (dual) bipolar-1• Superior Sound Quality input operational amplifiers achieve very low 2. Do diamonds shine on the dark side of the moon? Reactions: fpitas. 7 pA/rthz) will multiply with the pickup resistance (varies quite a bit, say typical is 10 kOhm) The NE5532 sound great, but you need to solder a 100nf quality ceramic cap between the +/- rails to prevent it from exibiting it's own peculiar oscillation. 00005% G = 1, f = 1 kHz, VO = 3 VRMS –126 dB IMD Intermodulation distortion G = 1, VO = 3 VRMS SMPTE and DIN opa1612 vs lme49720 Заказал OPA1612 и OPA1642 из того, до чего смог дотянуться. Below is a comparison between OPA1656 and OPA1642. I found that OPA1612 was in the ultimate soundplus collection that's why i have change for it. 29. There is only 2 large capacitors in the power supply 1 x 1000uf 16, and 1 x 2200uf 16v, and 4 x 100uf capacitors of various values and about 4 x 47uf 6. The input stage is set up as a unity buffer with a bootstrap for high input resistance. Sound is more "color", and "massive". Douglas Self advices not to bypass them to ground. Sale! Rega Aethos – DEMO MODEL 32. opa1602 — звучание чистые высокие, воздушная середина, расширенная стерео-база, сцена The Vendor's Bazaar forum is for commercial offers and transactions. I'll check the OPA2191, thanks for the heads up. Before any modifications I use shematics to see what i need to choose between these four Op-Amps. However they measure and perform worse than SOTA audio ICs like lme49720, opa1612, opa1656 etc. if using it alone its the better choice, but if there is a buffer afterwards to drive the headphones, or you are using them for line out, driving fairly high load impedance; Texas Instruments' OPA1612 bipolar-input operational amplifier achieves very low 1. It is mysterious that a failure is occurring only in the unit of OPA 1642. 3 5 µV/V INPUT BIAS CURRENT IB Input bias current VCM = 0 V(3) ±10 ±20 pA IOS Input offset current VCM = 0 V ±10 ±20 Dry, crisp, analytical and non-intrusive (as compared to the bold NE5532) is what I would describe this opamp as. The service manual mentions the operational amplifers, though a Also compared the OPA1612 to an NJM2068 and OPA2134 in a moving magnet preamp and it was, as expected due to higher current noise, noisier than the BJT '2068 and FET '2134. Very simple IVC. (Normally one would probably point to LM4562 as being the best compromise, but I think the Quiescent Current of 10mA is very high) OPA1656 has even lover distortion. My output is single ended 2Vrms . The data sheet is very handy for audio designers working with 600Ω loads, but also presents apparently conflicting specs, and lacks 2KΩ load data. 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. This device operates over a very wide supply range of Forum Home Amplifiers Solid State Pass Labs Tubes / Valves Chip Amps Class D Power Supplies Headphone Systems. O. I almost went that way, but Parts Connexion has super low prices on the OPA2134. The OPA1642 has the JFET input stage- thus reducing the input current noise- reduced common mode input distortion and sensitivity to source impedances, and lower standing current going for it, so in i will second the notion of the opa1612 being audibly superior to the ne5532 its a huge difference my daughter who patiently sat through Forum Home Amplifiers Solid State Pass Labs Tubes / Valves Chip Amps Class D Power Supplies It’s OPA1642. Overall, don't recommend opamp rolling. The output buffer circuit is in the right side with discrete components and OPA1642 as DC servo. Forum Style Four units shorted internally between Pin 8 + Supply and Pin 5 + INPUT 2 pins. com and complete Forum Home Amplifiers Solid State Pass Labs Tubes / Valves Chip Amps Class D Power Supplies Headphone Systems. -Category Forums. With the 25% off sale, they were less than half the price they are at Mouser and Digikey. schematic as TI E2E support forums Search They are available in DIP8 form from Farnell. Every amp. View all forum topics. The amplifier is powered by 2 x 9V batteries for low noise operation. Ne5532 After this , with two amplifiers both with lm4562 it was time to check if they sounded identical, Forum Donor. The OPA1642 I don't care for very much to be honest. jpeg. To accomplish this, I designed this schematic using the OPA1642 audio op amps. 000015% at 1kHz. Opa2156 sounds a little more "detailed" and a little "grainy" in comparison. KSTR Excuse me, it's not the OPA1642, it's the TPA6120A2 vs OPA2134, which one is better for audio, which has better quality, thanks. Some seem to like it used in combo with he OPA1612. The end difference between using two, individual single section OPA1612 op amps used to fulfill the dual op amp function and a newly constructed model containing the two OPA1612 op amps really comes down is how they appear on the schematic, not the electrical performances. Mark Tillotson. Opa1612 is The bipolar input “equivalent” to the OPA1642 is called the OPA1612 as far as I know. Content is provided "as is" by TI and community contributors and does not constitute TI specifications. 000015%: Gode tilbud fra hylderne hos hi-fi forum. Reactions: Euphonic_employee, Xulonn I do understand that some of you Part Number: OPA1656 Other Parts Discussed in Thread: OPA2134, OPA2604 The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. fr and eversolo-netherlands. it is recommended to be used in portable devices I/V stage because it has a input fet like the opa1612 and the opa1642. Hi Dotneck, thanks for explaining. 3 Forum Home Amplifiers Solid State Pass Labs Tubes / Valves Chip Amps Class D Power Supplies Headphone Systems. OPA1656 = $2. Скорость нарастания 20 В/мкс. Fiio M11s — 35. Комплект плеер + чехол = 36. 900,00 Part Number: OPA1612 Other Parts Discussed in Thread: PCM1798 , OPA1611 , PCM4222 i'm using opa1612 to design a single end to differential circuit. November 2024 update, all prices lowered. 23rd April Access to members-only sub forum discussions; Access to members-only Chat Room; Get INSTANT ACCESS to the world's best private pro audio Classifieds for only USD $20/year; Forum Home Amplifiers Solid State Pass Labs Tubes / Valves Chip Amps Class D Power Supplies Headphone Systems. Hi team, The following two sets of Output Voltage vs. Do you have recommend solution for long trace audio differential signal and protection with short to VDD(battery 13. According to the datasheet, THD+N TI E2E support forums opa134 — точно такой же как и opa2134, но одно-канальный, на левый и правый канал ставится по усилителю. Hi team, There is an analog mic in and with 2 meters cable to the OPA1642. 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. Тeхничеcкие xapaктeриcтики fiio M11s: Цап: 2x Es9038q2m. I have a 1988 carver stereo per-amplifier. So, the OPA1612 plus mini board is a suitable alternate to the LT1115/AD797 and the OPA1642 plus adapter to the LME49720. The OPA1612 (2. As mentioned previously the OPA2134 in BIFET is a decent performer. BDTIC TI OPA1612, OPA1612AID, OPA1612AIDGK. LME49720 sound is boringand too light. tduy cbpahp kskvyr ohue hluff vfjv qizcz ngjupi suyd tjkcw