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Lm4562 vs opa2604 specs
Lm4562 vs opa2604 specs. The LM4562's outstanding CMRR (120dB), PSRR • High-PerformanceLine Receivers (120dB), and V OS (0. 400 - Rs. The LM4562 A07 does work really well if you feed it with a good preamp like the Aiyima T6 Pro which also is flexible when it comes to op amps. Over this supply range the LM4562’s input May 15, 2022 · LME49720 vs OPA1612 vs Muses02. Over this supply range the LM4562’s input Products LCD & OLED display power & drivers BUF20800-Q1 — Automotive, 18-CH Gamma Voltage Generator with Two Programmable VCOM Channels General-purpose op amps TLE2027-EP — Enhanced Product Excalibur Low-Noise High-Speed Precision Operational Amplifier TLE2142A — Excalibur Low-Noise High-Speed Precision Dual Operational Amplifier TLE2142AM — High Speed High Drive Precision Dual May 27, 2017 · opa627 chips should measure roughly 48kohms to 56kohms both ways across pins 1 and 5 and should draw about 7 to 7. NJM4580 requires more care, usually a high-current not-too-fast FET opamp is suitable. 5A. If it is well implemented, non prone to oscillation, with high input impedance and within supply specs, it should work well. Distortion: 0. LM4562 Units Symbol Parameter Conditions Typical(3) Limit(4) (Limits) AV = 1, VOUT = 3Vrms Nov 19, 2015 · I'm no op-amp expert but I believe LM4562 and OPA2134 in your list are duals, NE5534 is a single I think and NE5532 is the dual. I've been researching and designing possible solutions around LM833 op-amps. You have to try it yourself to hear the difference, because the measurement advantage is very small, so it should be non-audible , but it is not. #1 Choose the LM4562 (LM4562 vs NE5532): High-End Audio Quality: If your application demands the highest audio quality, low distortion, and minimal noise interference, the LM4562 is a better choice The LM4562's outstanding CMRR (120dB), PSRR KEY SPECIFICATIONS (120dB), and VOS (0. Have to find some Philips CDi infos seems! Will tell ya! ••• Dec 2, 2010 · I have a phono preamp based on the OPA2134 and wondered if the LM4562 could be used as a one for one replacement for the OPA2134. After reading, changed OpAmp to LM4562 and bought 48V SMPS from Aiyima - thanks to Youtube didn't burn this one and was able to connect & adjust to 44V. Not op amp swaping in general. This Audio Operational Amplifier achieves outstandingAC performance while driving complex loads with values as high as 100pF. Apr 1, 2023 · 答:OPA2604的封装有两种,一种是标准双列直插封装(DIP),另一种是更小型的SOIC封装。在DIP封装的OPA2604芯片上,德州仪器曾经采用"Burr-Brown"标识并印刷了BB字母的图案(也就是BB字符的LOGO),这是因为它们曾经是以该品牌的名义进行销售的一个品牌系列。 The LM4562's outstanding CMRR (120dB), PSRR KEY SPECIFICATIONS (120dB), and VOS (0. Then National Semi, for marketing reasons, decided to create a new part number. de and as stated on their website, it arrived without a power supply. The LM4562's outstanding CMRR (120dB), PSRR KEY SPECIFICATIONS (120dB), and VOS (0. Switching op amps is likely to cause as much harm as good. Nov 25, 2015 · An op amp is part of a larger circuit and is chosen because its specs match those required for the circuit. It basically outperforms the 5532 in every way. but the difference between opa2604 and LME49720 is much smaller than the difference between these two compared to the original ne5532. There is sufficient buz about the LM4562 to at least check the possibility out. Over this supply range the LM4562’s input The LM4562's outstanding CMRR (120dB), PSRR KEY SPECIFICATIONS (120dB), and VOS (0. Why is that? Kindly enlighten us to give an idea for the deciding factor. The datasheet of the LM49720, May 2007, seems identical on all specs. Feb 28, 2021 · The LM4562 datasheet indicates it has at least 12dB greater open loop gain than LM833 at all audio frequencies. LME49720 is significantly more expensive than LM4562. com ELECTRICAL CHARACTERISTICS FOR THE LM4562(1)(2) The specifications apply for VS = ±15V, RL = 2kΩ, fIN = 1kHz, TA = 25°C, unless otherwise specified. Could I pick them out in blind testing? Nope, but I liked the sound the most when I put them in (for whatever reason) and I've left them installed. bipolar in the NE5532) there may some perceivable performance differences. Thanks Paul ••• Feb 4, 2014 · You can replace NJM2068 by LM4562. 1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) (1) THD+N vs Frequency VCC = 12V, VEE = –12V, VOUT = 3VRMS RL = 10kΩ 20157266 THD+N vs Frequency VCC = 17V, VEE = –17V, VOUT = 3VRMS RL = 10kΩ 20157268 IMD vs Output Voltage VCC = 15V, VEE = –15V RL = 2kΩ 201572e6 IMD vs Output Voltage VCC = 12V, VEE = –12V RL = 2kΩ 201572e5 IMD vs Output Voltage VCC = 2. Over this supply range the LM4562’s input circuitry maintains excellent common-mode and power supply rejection, as well as maintaining its low input bias current. May 19, 2017 · Something better than the LM4562? OPA2604 Datasheet by Texas Instruments Jan 7, 2021 · I have ordered Mean Well RS-100-24 SMPS power supply, 24V/4. 5V RL = 2kΩ Apr 6, 2020 · For dual op-amps I like OPA2604 as they are FET input and are valve like sounding in character with their very nice mid-range, but went further as someone gave me some Burson V5i hybrids which aren't quite as nice in the mids but are better over all. Search titles only By: Search Advanced search… Search titles only My OPA2604 draw Aug 19, 2023 · On the op amp front, I ordered and have tried OPA2132, OPA2134, OPA2604, LM4562 and LME49720 op amps and preferred the OPA2132s. Key Specifications Aug 22, 2007 · it is likely it is a different chip. The LM4562 combines extremely low voltage noise density (2. One of them is a linear Dec 14, 2007 · At the high end, the NatSemi LME49710/49720/49740 (LM4562) family has impressive specs - and are generally the best for almost all applications except as a low-gain or unity-gain buffer. Posted by KanedaK (A) on December 22, 2016 at 16:38:35 . Over this supply range the LM4562’s input THD+N vs Frequency VCC = 12V, VEE = –12V, VOUT = 3VRMS RL = 10kΩ 20157266 THD+N vs Frequency VCC = 17V, VEE = –17V, VOUT = 3VRMS RL = 10kΩ 20157268 IMD vs Output Voltage VCC = 15V, VEE = –15V RL = 2kΩ 201572e6 IMD vs Output Voltage VCC = 12V, VEE = –12V RL = 2kΩ 201572e5 IMD vs Output Voltage VCC = 2. May 12, 2017 · ADI’s OP275 combines both bipolar and JFET transistors for amplification and accuracy in an audio op amp. 002% Signal-to-noise ratio: 90dB Frequency response: bass ±12dB; treble±10dB Input sensitivity: 0. 5V RL = 2kΩ Jul 30, 2023 · By swapping the stock NE5532 op-amps, you can tailor the amplifier to your preference. Feb 12, 2021 · LM4562 is a Dual High-Performance, High-Fidelity Audio Operational Amplifier IC. The V3 is compatible with a variety of 8-pin dual op-amps like Sparkos SS3602, MUSES02, OPA2604, OPA2134PA, OP249, AD827, RM4559, LM4562, LME49720HA, allowing you to experiment and find the op-amp that best suits your audio needs. The LM4562 has a wide supply range of ±2. It has a strong output stage as well as JFET inputs. Both are musically better than ne5532, in my subjective opinion. Dec 8, 2021 · Replaceable OP amp chips: SR3609SM, OPA2604, OPA2314, LM4562, JRC5532, OP275GSZ, OPA1612AIDR, etc. How to choose between lm4562 vs ne5532. Brief Description. com 6 Specifications 6. You can use a combination as well. The LM4562 is miles ahead of the OPA2604 in terms of sound quality, if bypassed properly with an MKT cap. Nov 2, 2010 · Would like to replace my Denon's DCD-1500AE opamps of the NE5532 type with something better, OPA2604 and AD823 are two candidates with identical pin layouts - which should i choose? i also need a SMD version (is it called SOIC?) for my PCB, are they available in such packaging? any other OPA2604 with Rl=1k1 and different output levels vs frequency NJM4558 with Rl=1k1 and different output levels vs frequency Audio Opamps, fact, myths and THD measurement resultsRev. 5V, VEE = –2. I had read it many times before posting this threat. 1 6/19 2016-07-13 ACAV Nov 8, 2023 · New Aiyima A07 MAX Amplifier - Small Footprint, Good Sound Dec 15, 2014 · The strange thing is, if LM4562 has 10mA Quiescent current, why Search. Offset voltage is laser-trimmed to minimize the need for interstage coupling capacitors. Because of (at least) the input stage differences (JFET vs. 1 Absolute Maximum Ratings The LM4562's outstanding CMRR (120dB), PSRR KEY SPECIFICATIONS (120dB), and VOS (0. LM4562 has a wide supply range of ±2. I also used a pair of Mullards 5654 8100 valves instead of the Jan 5654 stock that came with the T6 pro which can be a little bright at the top end but the Mullards are like the opa2604, nice and thick sounding with a strong low end. AIYIMA A07 AIYIMA A07 Jul 5, 2006 · Thanks for the link. An op amp is part of a larger circuit and is chosen because its specs match those required for the circuit. 25 20 15 10 5 FREQUENCY – Hz MAXIMUM OUTPUT SWING – V 30 0 1k 10k 100k 1M 10M T. To utilize AD8620 requires some knowledge on the circuit. The first one is sounding warm and innofensive, and the LM 4562 is cleaner and leaner. The sound is much better but there's still something a bit "hi-fi" and "grey" in the presentation. Replaceable OP amp chips: SR3609SM, OPA2604, OPA2314, LM4562, JRC5532, OP275GSZ, OPA1612AIDR, etc. LM4562 is similar to the LME49720 but can be too sterile. Demon-stration boards are available for each package. Over this supply range the LM4562’s input Jan 7, 2021 · There are clearly sounddifferences between opa2604 and lm4562. I am testing the A07 with 2 different power supplies. I find OPA2604 more laid back/smoother and LM4562 very crisp/more forward. Choosing between the LM4562 and NE5532 depends on your specific application requirements and priorities. The LM4562 is unity gain stable. 5 mA quiescent current. I'm asking for actual experience in replacing TL071 and TL072 specifcally and sucessfully with something else. so it seems likely these are different chips & different processes with similar minimum specs. TEMPERATURE – C 300 INPUT BIAS CURRENT – nA 0 –50 –25 0 25 50 75 100 250 200 150 100 50 V. It offers an extremely low total harmonic distortion (THD) and noise level, making it suitable for audiophile-grade applications. The RC4558 is a Dual package version of the commonly used LM741 Op-Amp, both the IC share the same electrical characteristics except for that there is no offset and null option in the RC4558 Op-Amp. 4kHz bandwidth Here we see that the LM4562, LM833, LM49720 and OPA2134 all have the same level of performance with the NJM2742 having the worst performance of the bunch and the LT1352 being just slightly worse. But I'll check out the datasheets of your suggestions to see if there is an electrical fit. If the op-amp is connected straight to the DAC output, you better use a FET input op-amp. I like the phono preamp (an Acoustech PH-1P) but couldn't help wondering if the LM4562 would make an improvement. V S = ±15V, R L =2kΩ,R SOURCE =10Ω,f IN = 1kHz, and T A by OP-amp by song Jump table ↓* VOCAL CLASSIC POPSMUSES03 0:42~ 1:42~ 2:43~ Electrical Characteristics for the LM4562 (Note 1, Note 2) The specifications apply for VS = ±15V, R L = 2kΩ, f IN = 1kHz, T A = 25°C, unless otherwise specified. Regards, Felix. Apr 1, 2012 · Try them and see for yourself. I also have good memories on the OP249. The OPA2604 is available in 8-pin plastic mini-DIP and SO-8 surface-mount packages, specified for the –25°C to +85°C temperature range. Correct me if I'm wrong. This video title is; 2Which OpAmp is Better for 20W Class A Amplifier - OPA2604 vs NE553 Apr 16, 2011 · Get it all working first and then I would suggest trying the OPA2604 and perhaps the LM4562. It has a high common mode Input Voltage of ±14V hence the The LM4562's outstanding CMRR (120dB), PSRR • High-PerformanceLine Receivers (120dB), and V OS (0. I cannot recommend a 48V power supply because of the A07 internal temperature with the 48V PSU, in case I LM4562 data sheet, product information and support The LM4562's outstanding CMRR (120dB), PSRR KEY SPECIFICATIONS (120dB), and VOS (0. the ne5532 looks a bit harder, narrower and more direct, the other two a bit more relaxed and The LM4562's outstanding CMRR (120dB), PSRR KEY SPECIFICATIONS (120dB), and VOS (0. Nov 16, 2008 · Bye bye AOP2604 and welome LM4562, bye bye muting transistors. L = 2k TPC 13. 84vRms Speaker impedance: 4-8Ω Output power: 300W*2/4 Ohm Input mode: Bluetooth, RCA オペアンプの違いによる音質比較表 Aug 27, 2018 · LM358, MCP602, LM2904M, NE5532, OPA2228, OPA2134 and OPA2604 . Neutral means preserving color and timbre without altering it. My favourite dual is OPA2604 and that's what I use in my CDP. Over this supply range the LM4562’s input Aug 24, 2018 · THD+N Ratio vs Measured Level / Inverting 6dB Gain / 100k load / 22. Nov 9, 2010 · LM4562 / LME49720 / LME49860 - Do they sound different Aug 22, 2007 · The LM4562 and LME49720 are IDENTICAL except for the ordering number and marking. Find parameters, ordering and quality information The LM4562 is unity gain stable. Input Bias Current vs Nov 26, 2017 · thanks for your tips! i have tested the opa2604 and the LME49720 compared to the ne5532. TPC 16. Aug 28, 2023 · 2. ) Jun 10, 2010 · The LM4562 is a great substitution for the 5532. Symbol Parameter Conditions Oct 10, 2020 · Aiyima a04 with LM4562 is more dynamic, goes deeper in the bass and sound clearer. An interesting Feb 25, 2007 · You could always try the LM4562 (or the single version LME49710). Over this supply range the LM4562’s input FET-Input, Low Distortion Operational Amplifier datasheet ( OPA2604 SBOS006A–SEPTEMBER 2000–REVISED DECEMBER 2015 www. Dec 6, 2018 · Just replace the original op-amp with one with a similar specification, if it's not possible to find an exact replacement. I've replaced the old TL082 in my active crossover with opa2134. Over this supply range the LM4562’s input Apr 17, 2021 · I will show the difference between the OPA2604 vs the NE5532 OpAmp. Nov 2, 2010 · Would like to replace my Denon's DCD-1500AE opamps of the NE5532 type with something better, OPA2604 and AD823 are two candidates with identical pin layouts - which should i choose? i also need a SMD version (is it called SOIC?) for my PCB, are they available in such packaging? any other Electrical Characteristics for the LM4562 (Note 1) The following specifications apply for the circuit shown in Figure X. 1mV) give the amplifier excellent • High-FidelityActive Filters operational amplifier DC performance. Thread starter forami; Start date 2022-05-15 10:48 am; Jump to Latest F. As for the TL072 I would go for OPA2604 since it also has a fet input and good distortion and noise performance. Key Specifications Dec 22, 2016 · OPA2134 vs OPA2604 vs OPA2107. There are clearly sounddifferences between opa2604 and lm4562. I tested a few in both units and the best combination to my ears at least is the opa2604 in the output stage of the T6 Pro and the LM4562 in the A07. Watch out for fakes if buying op-amps. Oct 3, 2003 · OPA2604 provides wide dynamic range, even with high source impedance. Hi Guys, Could you tell us the differences between LM4562 and LME49720? The only difference I could see clearly is the price and the Vn( a difference of 0. the differences aren't huge, but big enough to make a change worthwhile. ti. Over this supply range the LM4562’s input Dec 22, 2016 · LM4562 in my revox player took more than 100 hours to sound good. I haven't seen where the Muse are used, maye on the PS lines of the opamps? No DC blocking caps? I don't know how sounds BB OPA2604 beside LM4562 but it will be an easy upgrade for sure. Old op-amps such as the LF412 and TL072 are more than good enough for 99% of audio applications. Headphones:Argon T-X0 (mk3 baffle), T60RP Argon, Vibrolab Mk3 Zebrawood & MK2 Walnut self built. This amp has wide bandwidth of 9 MHz, low supply current of 5 mA, and stable unit gain. So far, new opamp seem crispier with better instrument separation but new power supply definitely gave it louder oomph allowing me to hear those sound whispers in my KEFLS50s (which are proven The LM4562's outstanding CMRR (120dB), PSRR KEY SPECIFICATIONS (120dB), and VOS (0. Other op amps you can try are AD823's but they can be a bit noisy when used at the inputs of a phono stage so I prefer them in the output stages. Switching op amps is likely to cause as. 7nV/√ Hz) with vanishingly low THD+N (0. Although I am a fan of the OPA2134, I still have very considerable respect for the NE5532. The opa2604 is a fet opamp and 4562 is a bipolar based IC. Please refer to the spec sheet for details. The LM4562 is available in 8–lead narrow body SOIC, 8–lead Plastic DIP and 8–lead Metal Can TO-99. Aug 22, 2007 · Hi Ryssen, Having had a quick look the data sheet of the LM4562 August 2006 and of the LM49860 June 2007, the differences I detected were at the end of the documents : no mention of "banned substance compliance compliance" at the end of the LME49860 datasheet. I´m looking for opamp candidates to make the sound little "bigger" and "rounder" than in LM4562 but with high detail in the mid-high frequencies. OPA2604: The most polite, non-fatiguing, but also the least dynamic and exciting with the smallest soundstage. S = 15V A. ® OPA2604 Distortion Rejection Circuitry* (3 Sep 24, 2002 · Here are some specs on the 4570: opamps I would use the OPA2604 because they really sound OK. I will measure the A07 output power and spectrum cleanliness with this power supply. This Audio Operational Amplifier achieves out-standing AC performance while driving complex loads with values as high as 100pF. 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. Feb 23, 2019 · AIYIMA A07 TPA3255 Amplifier Measurements LM4562 option I received my A07 yesterday, on January 6, 2021, shipped from Italy. Aug 3, 2013 · JRC5532DD: Not too far from the LM4562, but it seemed a bit harsher at times and less natural sounding OP275: Seemed to accentuate the mid-range a bit more than was natural, so vocals seemed more in-your-face and a bit overbearing to me. One can almost not find two more different sounding IC:s. 84vRms Speaker impedance: 4-8Ω Output power: 300W*2/4 Ohm Input mode: Bluetooth, RCA Oct 8, 2008 · TL071 and TL072 are JFET op amps with certain specs and sound and output Z. VCL = +1 R. Over this supply range the LM4562’s input TI’s LME49720 is a 2-channel, 55-MHz, high-fidelity, high-performance, RRO audio op amp. 1200 each. As with all discrete types, this op-amp draws more current than most IC types. 5V to ± 17V • THD+N (A The LM4562 has a wide supply range of ±2. 5V to KEY SPECIFICATIONS ±17V. Jun 3, 2013 · This probably isn’t the answer you want, but I’m going to present it to you anyway. The OP275 run at 38 degrees and the NJM4580 at about 42 degrees. Maximum Output Swing vs. A = 25 C V. ••• Jan 10, 2008 · The LM4562 goes even further than being neutral, it makes music grey which I don't like. Edited April 6, 2020 by muon* Jun 16, 2021 · Part Number: LM4562 Other Parts Discussed in Thread: LME49720. LM4562 and AD8599 OPA2604; OPA2134; TL072; NE5532; LM4562; OP275; OP285; Please check that the appliance’s power supply can supply the extra current needed, especially if replacing more than one existing IC op-amp with our op-amp. Demonstration boards are available for each package. Over this supply range the LM4562’s input Selection aspect of the op amp, we used OP IC OPA2604 plus LM4562 match, we passed several tests comparing those match, we find that they can complement each other; If the preamp use OPA2604, and power stage use LM4562, we tested them with a 20KHz square wave, which output waveform distortion is very small. Member. 2022-05-15 10:48 am #1 Jan 7, 2021 · The LM4562 sitting in the A07 and the BB opa2604 sitting in the preamp output stage. Having LM4562 in both amplifiers and they start to sound the same. If anything, it has a more 'neutral' sound than the (possibly slightly euphonic) OPA2134, but its performance is very reliable and dependable and of a very high standard, which possibly explains its long standing use in 'professional' audio gear. • Power Supply Voltage Range: ±2. Purchased at Amazon. LM4562 SNAS326I – AUGUST 2006– REVISED JANUARY 2010 www. There are a couple of ebay vendors (audjade_chn and hifi-szjxic, no affilation beyond satisfied repeat customer) that sell genuine salvaged chips at very reasonable prices. The LM4562 is available in 8–lead narrow body SOIC, 8–lead Plastic DIP, and 8–lead Metal Can TO-99. However, be prepared to shell out anywhere from Rs. 5V to V = 1, VOUT = 3VRMS, fIN = 1kHz) ±17V. Joined 2022. 2). 5V to ±17V. Frequency. Jun 13, 2012 · I've put the spare standard board back in and it runs much cooler. Over this supply range the LM4562’s input Sep 1, 2023 · NE5532 vs LM4562 The LM4562 is a high-performance op-amp renowned for its exceptional audio quality. Over this supply range the LM4562’s input Dec 28, 2017 · ne5532,opa2604,lm4562 没有突出的频段,因为据说资料里的开环增益全频段基本都差不多,感觉和opa2604没差,下次换了稳压再 Feb 11, 2021 · According to the TI datasheets OPA1612 has less noise than OPA1656. An interesting Phase Margin vs. Worry-Free May 22, 2015 · G'day all, in the light of a recent experience where a DIY phono stage of mine using LM4562's went into destructive oscillation, I think that perhaps the like of the LM4562 are possibly 'too good' and touchy and I now feel more comfortable with the like of the OPA2134 and the NE5532 at least for high quality audio applications. 00003%) to easily satisfy the most demanding audio applications. 1mV) give the amplifier excellent operational amplifier DC performance. OPA2604 is the most "coloured" sounding (in the nicest possible way) and the LM4562 probably the more clinical. 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 LT1364, both of which are very Nov 10, 2013 · I have tested OPA2604, LM48960, LM4562, OP275, NE5532 and a Burson V6 Vivid. The cost is about $30 in a local store. Nov 8, 2006 · In Active crossover application, OPA2134 and OPA2604 Aug 28, 2023 · LM4562 vs NE5532: What are Differences and How to The LM4562's outstanding CMRR (120dB), PSRR KEY SPECIFICATIONS (120dB), and VOS (0. Aug 30, 2024 · G'day all, an interesting thread. I note that the LM833 and LM4562 datasheets contain identical RIAA phono circuits in their application notes. But that does not say anything about the SQ. Over this supply range the LM4562’s input Oct 8, 2001 · TI/Burr Brown's OPA2604 is a good alternative as well. The Sparko Labs dual opamp should work in it too. Tangent didn't mention AD826 and LT1364, which are my best choices. forami. The Apr 2, 2023 · LM4562和OPA2604都是高性能运算放大器,具有很多相似的特点,但是也存在一些差异。 电路结构: LM4562和OPA2604采用的电路结构不同。LM4562具有高开环增益、高输入阻抗、低偏置电流、低输入噪音等特点,其电路结构为德州仪器公司(DTI)独创的推拉式(Push-Pull)输出 LME49720 Dual High Performance, High Fidelity Audio 5 days ago · LM4562 LM4562 Shutdown: No Shutdown No Shutdown Technical Specifications Product Description Links (Datasheet, Catalog, etc. I've used both LM4562 and OPA2604 from the suggestions. To ensure that the most challenging loads are driven without compromise, the LM4562 has a high slew rate of ±20V/µs and an output current capability of ±26mA. The sound quality comes from the entire circuit, not the op amp. OPA2134 seems inoffensive and defined enough but it's got this flat, slightly recessed in the midrange presentation - not quite what I'd call "dull" but not bright, just a bit "hifi", it sounds like an entry-level Japanese solid-state amplifier, and there's not much openess Jun 8, 2018 · OPA2604 alternative? OPA2604 SBOS006A –SEPTEMBER 2000–REVISED DECEMBER 2015 OPA2604 Dual FET-Input, Low-Distortion Operational Amplifier 6 Specifications 6. I'd begin with the OPA2604, it's dedicated for the I/V stage and does it very well in my CD player. from a manufacturer's point of view if the specs are identical then the chips are identical, it has happened before that the process changes yet the chip number stays the same so long as the new chip meets the published spec. The LM4562 was introduced first. Before that, it was as sharp and cold as a swiss knife. Temperature. S = ±15V. OPA2604 sounds rounder, more "valve" or "analog", but not clear in the high frequencies. There are a pair of OPA2604 in the DAC I/V that seem to run quite hot as standard (55 degrees) I'm wondering if this is just me being paranoid as it runs warmer with the LM4562.
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