Lm4562 op amp. May be that is reason why LM4562 is popular with many OEMs. It features high-speed and low noise characteristics coupled with a ultra-low distortion. I like the OPA827 a bit more than the OPA211, is just a bit warmer and more coherent through the whole frequency range. The circuit works fine, with the expected gain and shift, but the op-amp gets hot (68°C). 5V to ±17V. The M5214L is a 7-pin SIP single op-amp; Is for a Yamaha r-2000 ROHS3Compliant EAR99 LM4562 Matte Tin (Sn) op amp buffer circuit 9. Too many details hide the music. The LM4562 audio operational amplifiers deliver superior audio signal amplification for outstanding audio performance. I'll be using a disc player into the amp into a pair of speakers. The LM4562 has a wide supply range of ±2. The input goes to both op-amps in the package (it clipped with only a single op amp), which are then combined through balancing resistors and send through another 500Ω resistor The LM4562's outstanding CMRR (120dB), PSRR (120dB), and VOS (0. Avoid LM4562/LME49720 and OPA2134/2604 if you do not want to re-engineering circuitry to make it stable. Anybody still using the humble NE5532 in their Jun 16, 2023 · All four amps are upgraded with LM4562 op-amps in the input stage, which are my preferred chip op-amps. The best solution is to use NE5532 in I/V-stage and LM4562 in differential amplifier as it gives almost identical performance to all-LM4562 implementation Differences in distortion are mostly due to odd left/right Dec 8, 2018 · The LM4562 is a completely unsuitable replacement for a J-FET op-amp. Aug 5, 2020 · A while ago I bought some LM4562 op amps from eBay. 1K. been reading through the forums about Op-amp ugrades and i had my first try a couple of days ago. Other vendors I've seen have been quite a bit higher. Kong, check your mail. Over this supply range the LM4562’s input circuitry maintains excellent common-mode and power supply rejection, as well as maintaining its low input Jul 30, 2021 · Hi, For my last blog article, I compared the performance of: Texas Instruments LME49720 Texas Instruments OPA2134 Texas Instruments LM4562 Texas Instruments LM833 New Japan Radio NJM2742 Analog Devices LT1352 Texas Instruments NE5532 New Japan Radio NJM2732 Analog Device LT1169 See here Aug 1, 2011 · Op Amp Measurements This is a visual "off the scope screen" comparison of four different op amps often used in audio circuits. com/user?u=12254451Mail Jan 3, 2012 · hi guys, newbie here. I notice the NA is listed as two channel. Jan 7, 2023 · The Texas Instrument Burr Brown are a well known group of op amps to the dyers, to my impression all share the same warmish sound but the OPA2132P that is the more neautral and all have good instruments separation but only an average soundstage, nothing wrong but if your main goal is a great spatiality you have to look elsewere, anyway if you May 13, 2023 · I am using a LM4562 dual op-amp (in SOIC-8) as a level-shift and attenuation stage between an audio amplifier and an ADC. NE5532 - Wikipedia NE5532 Feb 23, 2019 · Fig. I'm getting really fed up with being sold fake crap from China. 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. 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 LME49860 maintains excellent common-mode rejection, power supply rejection, and low input bias current. I may also swap in some LM4562 Op-amps I have. com SNAS326I – AUGUST 2006– REVISED JANUARY 2010 LM4562 Dual High-Performance,High-FidelityAudio Operational Amplifier Check for Samples: LM4562 1FEATURES DESCRIPTION 2• Easily Drives 600ΩLoads The LM4562 is part of the ultra-low distortion, low-• Optimized for Superior Audio Signal Fidelity Order LM4562MA SOIC8 op amps in our online store. de and as stated on their website, it arrived without a power supply. near their maximum of 24 volts, they're not very much fun. 7,625 In Stock Thoughts on the LM4562 dual op amp. Audio performance levels have risen dramatically in the last 20 years. LM4562-+ LM4562 10pF + + INPUT OUTPUT 47 k : 150 : 3320: 909 : 26. 14*18 so max frequency that the LM4562 can supply 2v peak-to-peak is 1592356hz Feb 29, 2008 · ad8620 is for sure a nice chip. Jul 13, 2007 · National Semiconductor won the Product of the Year Award for its LM4562 dual audio op amp. com SNAS326K –AUGUST 2006–REVISED DECEMBER 2013 LM4562 Dual High-Performance, High-Fidelity Audio Operational Amplifier Check for Samples: LM4562 1FEATURES DESCRIPTION The LM4562 is part of the ultra The LM4562’s outstanding CMRR (120dB), PSRR (120dB), and V OS (0. If you are using more than 1 LM4562, this is the way to do it for low THD and less stability/oscillation problems. patreon. in my m3 amp i prefer the 627/637 to the 8610, but, the 86x0 chips sound more 'thin' or 'spidery' the more you crank up the power supply voltage. TI’s LM4562 is a 2-channel, 55-MHz, high-fidelity, high performance audio op amp. LM4562 has a wide supply range of ±2. LM4562's are faster slew rate even than ST33078's. Probably better at lower voltages. com FREE DELIVERY possible on eligible purchases Jul 7, 2021 · Part Number: LM4562 Other Parts Discussed in Thread: OPA2134 Dear Amplifiers team. I used R3,R9: 2k, R4,R10: 680R. LT1028 with noise gain 86dB and signal gain -1 LT1028 was an excellent bipolar input opamp with very low noise and very low distortion. Check stock and pricing, view product specifications, and order online. It was 50 years ago, but it is not now. I particularly don't like devices that have double up on op-amps input and driver. TL072 was VERY good !! Apparently, a very good op amp is the LMH6622 Operational Amplifier (Op Amp) - High Speed Apr 9, 2008 · The LM4562 has a lower offset voltage (+/-0. Find parameters, ordering and quality information. 7mV max) than the OPA2134 (+/-2mV max), but the LM4562 also has a higher input bias current (72nA) than the OPS2134 (+/-100pA). Sep 4, 2021 · I bought a regulated power supply that's capable of supplying up to 48v and 10 amps. To add the LM4562 in your simulation add the symbol Opamps/opamp2 and rename it to LM4562. Patreon https://www. 01 oz LM4562 のデータシート、製品情報、およびサポート Dec 25, 2015 · The DIP version of the LM4562 is getting phased out, as are many other DIP op amps from TI. LM4562 is the best performer in differential amplifier. So many better opamps available with the same pin out. I am a little baffled as to why so many people think that rolling op amps is a waste of time, in my experience is most certainly is a beneficial practice. 5 days ago · A stereo high-performance amplifier with integrated audio processor and up to 192kHz audio support. 1 k : 3. com SNAS326K –AUGUST 2006–REVISED DECEMBER 2013 LM4562 Dual High-Performance, High-Fidelity Audio Operational Amplifier Check for Samples: LM4562 1FEATURES DESCRIPTION The LM4562 is part of the ultra Order today, ships today. Then, spend lots of time rolling them giving marks out of 10. Jun 13, 2012 · The op amps were in the disco mixer, had been slow old 4558s. I have included the corrected file. Oct 10, 2020 · For me its clear evidence that LM4562 is a very good op amp. i have an old 2-way active crossover lying around, when i opened it up i found 10 op-amps: 3 op-amps (2 ba4560, 1 ba4558) in the input Description: The LM4562 is part of the ultra-low distortion, low noise, high slew rate operational amplifier series optimized and fully specified for high performance, high fidelity applications. 50 a piece, but drops to 3. Then, after a few months rolling and marking them out of ten, put the best one back in, which will be the LM4562. LM4562 Datasheet(PDF) - National Semiconductor (TI) Apr 23, 2007 · I opened again the Tag and done again an op-amp swap session but this time on my main system. Fly-Wing Technology. Jan 7, 2022 · That said, I did look up that op-amp – Nice audio spec and can still drive cables (And I like the 100dB CMRR 🙂 I wonder if anyone maintains a hall of fame for ‘the best’ components for various applications? *later, he found himself reading the LM4562 data sheet…. Jan 11, 2015 · The LM4562 model has some convergence problems due to an "ideal" diode. The LM4562 stay the better op-amp for details, quality of bass and tone but the sound is too transparent. The LM4562 is a dual-channel op amp, meaning it contains two separate op amps within a single IC package. The LM4562's outstanding CMRR (120dB), PSRR (120dB), and VOS (0. I've just placed a couple of NE5532's into my DIY ESP P06 and they sound fine. Jan 13, 2024 · It seems like the best performing audio op-amp that still comes in a DIP package is the LM4562, so that is what I plan on using for the op amps. Aug 18, 2018 · The LM4562's outstanding CMRR (120dB), PSRR (120dB), and VOS (0. NE5532: The resolution is average, the high frequency is relatively dry, and the low frequency is LM4562NA/NOPB is a dual high-performance, high-fidelity audio operational amplifier. The LM4562 is a Dual High Fidelity Audio Operational Amplifier. I did a lot of comparison with same preamp, power amp and speaker, just changing opamp in the preamp. This PCB can be used for every dual op-amp. 1mV) give the amplifier excellent operational am-plifier DC performance. I have made a thorough THD and IMD vs. One of them is a linear LM4562-+ LM4562 10pF + + INPUT OUTPUT 47 k : 150 : 3320: 909 : 26. • Guitar amplifier and other music instrument amplifier • A/V receiver • Bookshelf stereo system • Professional audio amplifier • DJ equipment • Turntable • Special function module 3 Description The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio LM4562-+ LM4562 10pF + + INPUT OUTPUT 47 k : 150 : 3320: 909 : 26. Additionally add ". It's up to the required speed whether you need the AD8066 or might be something slower but more accurate. The last audio op amps were designed over 20 years ago. (456 KB) Dec 4, 2006 · The new LM4562 op-amp from has received great reviews, but are pretty hard to come by, and relatively expensive in small quantities. 48 in quantities of 100. The need. To me, the sound is just too laid back. Over this supply range the LM4562’s input circuitry maintains ex-cellent common-mode and power supply rejection, as well as Jan 7, 2021 · So this would probably be my final contribution to A07 measurements. Feb 4, 2014 · Only really better substitution for NJM4580 for example as Pre-Amp can be no less then OPA2228 or even better OPA1612, but for that -3dB less noise (and distortion) over whole audio spectrum you will have to play premium extra. . 5V to ±22V. The LM4562 is a dual op-amp. Description: The LM4562 is part of the ultra-low distortion, low noise, high slew rate operational amplifier series optimized and fully specified for high performance, high fidelity applications. 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. The LM4562 combines extremely low voltage noise Feb 23, 2023 · Since we are talking about op-amp, any good replacements for theses ones . At Digi-Key, the DIP package is USD5. You need those 2x100u electrolytics AT each package; within 1cm. Although NE5532 performs well, many audiophiles still want to improve the sound quality by replacing the OP chip. 7 nF//500 pF 47 nF//33 nF LM4562 www. Noise free and transparent sound - this is what I can say after first tests. There is a thread on DIYaudio that discusses some alternatives: Dec 19, 2021 · I like the resolution of the LM4562, however, this op amp turns my circuits into a radio! I get bleeps and bloops from god knows what, probably WIFI and nearby computers, and whatever electronics my neighbors are running. Music became like a "cacophony" of different instrument. I hope to hear from you if you have (a) board(s) availabel Yes, I still have about 10 of PCB’s for this project. 1mV) give the amplifier excellent operational amplifier DC performance. 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 Feb 23, 2019 · AIYIMA A07 TPA3255 Amplifier Measurements LM4562 option I received my A07 yesterday, on January 6, 2021, shipped from Italy. It provides precision, accuracy, detail, timing, clean and dynamic sound. I spent ages trying to figure out why my design did not work as expected. Greetings, Udo Replaceable BT20A PRO V3 Op-Amp Chips Feb 18, 2016 · ammm if the formula of slew rate is slew rate= 2πfV the slew rate of lm4562 is 20V/µs = 20000000Vs vcc= 9 vee=-9 18v peak-to-peak so 20000000=2*3. LM4562 Datasheet (PDF) Weight: 0. 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. Playing music this amp sounds a little more lively but I'll have to do more listening. lib" to your circuit. Feb 12, 2021 · LM4562 is a Dual High-Performance, High-Fidelity Audio Operational Amplifier IC. I'm still (perhaps irrationally) fond of the OPA604, maybe because some equipment I really like used it. The LM4562 is a National Semiconductor op-amp very popular with builders and upgraders. Here we recommend some replaceable OP chips. LM4562 www. Apr 21, 2007 · Just a question: I know LM4562 is supposed to be for hifi application. Compare. It's a BJT input op-amp with a high bias current of 72nA, compared to, 65pA typical, 20nA worst case, for a J-FET op-amp such the old TL072 and a 55MHz of GBWP could be far too fast for a circuit and layout designed for one with a GBWP of 3MHz. 81mm 10nA 100muV 55000kHz. Oct 13, 2020 · Currently, the op chip used on AIYIMA A04 & A07 is NE5532. Price Texas Instruments LM4562 Series Audio Amplifiers are available at Mouser Electronics. Aug 28, 2023 · The LM4562 is a high-performance audio operational amplifier (op amp) manufactured by Texas Instruments. I have not found the internal circuits of the LM4562, but I see the schematic of NJM4565, it is as simple as it gets. Combining advanced leading-edge process technology with state-of-the-art circuit design, the LM4562 audio operationalamplifi The LM4562's outstanding CMRR (120dB), PSRR (120dB), and VOS (0. Over this supply range the LM4562’s input circuitry maintains ex-cellent common-mode and power supply rejection, as well as Aug 20, 2023 · Fosi Audio V3 op-amp rolling, has anyone tried it? Snake Oct 17, 2014 · Things like oscillation, instability, output load too low for a particular op amp, common mode distortion differences between op amps, or, in the case of JFET op amps, non linear input capacitance, although this, along with CM distortion would appear to be of limited concern at phono cartridge signal levels. ••• Apr 16, 2011 · It seems to me that the selection of what op amp to use depends greatly on the circuit they are in as well. I suspect they were really TL072 or similar. This ultra-low distortion, low noise, high slew op-amp series optimized and fully specified for high-performance, high-fidelity applications. Swapping out the 5534 or 5532 without looking a little deeper isn't wise. I like the lm4562 a lot in some jobs but watch out for dc offset -- Feb 25, 2020 · Replacing Nakamichi's Favourite Op Amp Jan 8, 2017 · LM4562 and NE5532 show almost identical performance in I/V stage, while OPA2134 is 2 dB weaker. May 24, 2015 · 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 organisation (they have Aug 20, 2018 · Buy Juried Engineering LM4562NA/NOPB LM4562NA LM4562 Dual High-Performance Audio Operational Amplifier with Ultra Low Distortion IC + Industrial Machine Round Hole Sockets Dual Op Amp DIP-8 (Pack of 4): Amplifiers - Amazon. Out of stock. Both of these figures are to be expected because the LM4562 is a bipolar input op amp while the OPA2134 is a FET input op amp. ti. I like Sparkos SS3602 discrete op-amps better, but that is not the subject here. Dec 4, 2006 · Mr. 83 k : 100 : 150 : 22 nF//4. LM4562 is one. The LM4562's outstanding CMRR (120dB), PSRR (120dB), and V OS (0. The LM4562 combines extremely low voltage noise Jan 7, 2021 · The best op-amp is no op-amp is my ultimate belief. Download the LM4562 datasheet. i used LM4562 as the upgrade. Combining advanced leading-edge process technology with state-of-the-art circuit design, the LM4562 a The LME49860's outstanding CMRR (120dB), PSRR (120dB), and V OS (0. TI's newest Amplifier uses state of the art circuitry and process to achieve a new class of audio performance and technology. May 19, 2017 · By most standards the LM4562 is a superior op-amp to the NE5532. Because the LM4562 has considerably more available gain (loop-gain) in the audio-spectrum compared to the NE5532 and LM833N, this translates into lower THD. Though op-amp rolling is fun to tinker around with, I have an easy 2 dozen op-amps in my collection each of which holds it's rightful Mar 5, 2007 · LM4562 -- not by a very large margin ! 2. This Audio Amplifier offers near zero THD+N and sets a new standard for high end audio users. I actually put the 0. You very rarely need the supa low LM4562-+ LM4562 10pF + + INPUT OUTPUT 47 k : 150 : 3320: 909 : 26. Though I must admit to not being familiar at all with any aiyima amplifiers. Output offset voltage (even without DC blocking caps) - about 1-3mV. So the JFET op-amp choice is correct. That's a FET input op-amp though. 1 uf's about an inch away from each pair of op amps by drilling new holes in the PCB, but the nearness to the op amp is important. Each sound competing to be the first. The feedback capacitors (C3/C7) do not seem to be jumpered. LM4562 Series Audio Amplifiers are available at Mouser Electronics. 14*18*f so the max frequency that the LM4562 can supply 18 v is 20000000----- =176928hz 2*3. I am testing the A07 with 2 different power supplies. From what I have read - the LM4562 can be sensitive to things like PCB layout. No offence but these difference between these two op amps is very much distinguishable. Im having trouble discerning the difference between the lm4562 and the NA version. Is there any difference between a regular high slew rate low noise opamp to the specialized LM4562? ••• LME49720 Dual High Performance, High Fidelity Audio Jan 11, 2012 · Well, the title! In GENERAL, is it a good idea to use a LM4562 as a current->voltage opamp? It's designed to be a buffer amp, but does it work well as an I/V converter? Dec 27, 2006 · Re: Re: Re: Re: LM4562 (dual op-amp) simple preamplifier Thanks for answering veteran. I have a old project of ultra low distortion oscillator, in this project, designer used several operational amplifiers of other competitor (Analog Devices). Purchased at Amazon. Over this supply range the LM4562’s input circuitry main-tains excellent common-mode and power supply rejection, as well as maintaining its low input Jan 19, 2023 · Do what I did. Additionally the + and - input are exchanged. Over this supply range the LM4562’s input circuitry maintains ex-cellent common-mode and power supply rejection, as well as Dec 26, 2016 · AN6552 is too slow and doesn't spec THD. And the subject is also not if 5532 is the world’s best op-amp. Feb 16, 2012 · Nothing especially dramatic about a non-inverting op amp powered by LM317/337s, if you accept that op amps are capable of driving headphones, and that the LM317/337 sound fine, off you go As others have pointed out there are a couple of eye-openers on the schematic, the biggest is the 1uF caps in front of the regulators. Pricing and Availability on millions of electronic components from Digi-Key Electronics. The board is sitting on the bench in free air with no enclosure. They turned out to have a GBW of about 4MHz instead of 55MHz. 03% (please take into account that the equivalent gain is 86dB), one of the lowest noise from all parts under test and no unexpected spectral interference lines. LM4562NA/NOPB – Audio Amplifier 2 Circuit 8-PDIP from Texas Instruments. The preamplifier uses a high pass and low pass filter at the input to set the bandwidth, then an input buffer stage with parallel LM4562 op-amps. com SNAS326K –AUGUST 2006–REVISED DECEMBER 2013 LM4562 Dual High-Performance, High-Fidelity Audio Operational Amplifier Check for Samples: LM4562 1FEATURES DESCRIPTION The LM4562 is part of the ultra Jun 30, 2009 · For the ADC input you need low input currents, good linearity and fast settling time. This Audio Operational Amplifier achieves outstanding AC performance while driving complex loads with values as high as 100pF. com SNAS326K –AUGUST 2006–REVISED DECEMBER 2013 LM4562 Dual High-Performance, High-Fidelity Audio Operational Amplifier Check for Samples: LM4562 1FEATURES DESCRIPTION The LM4562 is part of the ultra The plots show the superior performance of the premium LM4562 op amp, with a 55 MHz GBW. But at least it can be May 22, 2015 · G'day all, I have a reasonably large collection of NOS and used but electrically ok op amps, all the way from TL072 to LM4562 and everything in between including NE5532's. The LME49860 has a wide supply range of ±2. 2 days ago · LM4562MAX/NOPB Texas Instruments Audio Amplifiers 2-channel, 55-MHz, high-fidelity, high performance audio op amp 8-SOIC -40 to 85 datasheet, inventory, & pricing. We recently communicated with lead designer Matsuro Koterasawa and asked him about the development of the part. Most of the listeners would be perfectly happy with it. I have 8pcs available if you want them. amplitude measurements of my AIYIMA A07 TPA3255 amplifier, with LM4562 opamps (reduces noise and distortion slightly compared to original NE5532), powered from Mean Well RS-100-24 SMPS set to 27Vdc voltage. lib LM4562. 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 The circuit is a simple LM4562 op-amp (objectively pretty much the best op-amp for audio out there) gain circuit powered 0-9V, with a voltage divider to bias the input. « on: 27 May 2019, 04:53 am » G'day all, I am a long time fan of DIY audio and particularly the designs of Rod Elliott (ESP). high-fidelity, high performance audio op amp 8-SOIC -40 to 85: Datasheet. How does the LM4562 compare to other op-amps in its class? In terms of audio performance, the LM4562 often outperforms other op-amps, thanks to its exceptional specifications. Supreme Sound Opamp V5i Mar 20, 2019 · According to Marks proposal, I think the schematic attached is a good solution. 2. The noise level is again degraded due to the high noise gain but unity signal gain. FM stereo out: 4558 x1; Phono stage: 4558 x1, 4559 x1, M5214L x2; Pre-Amp: M5214L x6, 4559 x3, 4560 x2; 4558, 4559 & 4560 are 8-pin DIP dual op-amp. The “width” of the sound stage seems fixed and artificially (too) wide. I need ten of Nov 9, 2010 · LM4562 / LME49720 / LME49860 - Do they sound different Jun 7, 2016 · The performance of the stock op-amp LM4562 is best characterized as clean, lean, fast, but relatively laid back. The Feb 28, 2021 · G'day all, I guess that this sounds suspiciously like the subject of 'op amp rolling, but actually it isn't. 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 LM4562NA/NOPB is a dual high-performance, high-fidelity audio operational amplifier. Mfr Part # Quantity Available. 55-MHz, high-fidelity, high performance audio op amp 8-SOIC -40 to 85 Aug 24, 2018 · As per moderator, here is full article from the site: Objective Guide to Op-Amp Rolling - Part 1 July 30, 2021 Op-Amp Test Board This blog article/post is a deep dive into currently available 8-pin DIP dual op-amps, for those that like to swap op-amps in their designs and/or DIY projects. Does this mean that since the 07 max has two sockets (one each for L/R) that I can't use a two channel op amp?? Is the NA version simply the newer version on the market? Thanks! May 30, 2023 · Yes, the LM4562 can be used to replace other op-amps in many applications, provided the power supply and pin configuration align. Operational Amplifier, 2 Func, 700uV Offset-Max, PDIP8. The LM4562 is available in an 8-lead narrow body SOIC, an 8-lead PDIP, and an 8-lead TO-99. I have also tried opa1642, 1612 and 2134, but they are all slightly inferior to lm4562 soundwise in LM4562 Texas Instruments Evaluation Boards parts available at DigiKey. You can't simply pick a an op amp and call it the best without defining where or in what circumstances it performs better in. The input impedance is set to 47. We can see some mains system spuriae, low distortion of 0. The LM4562 combines extremely low voltage noise Nov 25, 2015 · LM4562 vs OPA2134 vs [ ? ] Dec 27, 2006 · This is my LM4562 based preamplifier. Kits, Programmers | Op Amp Evaluation Boards. Sound character can even be slightly different on the same op amp but different manufacture. Spend money on opamps, lots of them. The SS3601 / SS3602 discrete op amps will outperform virtually all audio grade monolithic IC op amps in open loop gain, noise performance, output current, and magnitude of class A bias current. Even the coveted OPA627 monolithic op amp, with a price tag of over 25 dollars, has 30dB less gain and around twice the noise of these discrete op amps. schematic LM4562NA/NOPB is a dual high-performance, high-fidelity audio operational amplifier. iohuuc rceze dxrkhr bxebwef oalz avvqdx pnolf kkiq eatq fmutzi