Opa1656 dip8. TOPPING D90 III DISCRETE Balanced Discrete DAC 999,00 € TOPPING D90 III DISCRETE Balanced Discrete DAC 999,00 € ROSE HIFI RA280 Amplifier Class AD 2x250W 4Ω/8Ω 3 449,00 € Batch of 4 pcs of OPA1656 DIP8 Ultra Low Noise and Distortion FET-Input Op Amp. I was unprepared for what a superb upgrade these dip-socketed OPA1612 op-amps are over the original chips in my diy preamp. Copied the given . I have a circuit with two OPA1656's and it so happens that one offset is subtracted from another and almost cancels - in LTspice. Unfortunately neither of those changed performance significantly. Specifications; Product type: Dual OPA OPA1656, OPA1642). Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. View all 8. 000035% (-129dB) at 20kHz and improving audio signal fidelity across the full audio bandwidth. I think it's a matter of circuit design and implementation. Tilear is 2. 6v. Products (2) Datasheets; Images; Newest Products; Results: 2. CMRR is not a big issue. Technical characteristics. So : you can "custom" your sound with your favorite DIP OP After a long listening comparison over months with a number of modern audio OP-Amps, I can only say that the OPA1656 is one of the best integrated in terms DIP8 OPA1656 Dual Ultra-Low-Noise Low-Distortion FET-Input Audio Operational Amplifier. DIP8 OPA1656 Dual Ultra-Low-Noise Low-Distortion FET-Input Audio Operational Amplifier. KH Electronic Supporting Store. 99uV, or a THD+N of -131dB below 3. This fully conforms to the specs. 00-Search for: Batch of 4 pcs of OPA1656. Altered text SYMATTR Value OPA1656 SYMATTR Prefix X SYMATTR SpiceModel OPA1656. 9 mA of supply current to accommodate the power supply constraints of many types of audio products. Rakharo said: Do you guys have an idea where to by good opa1656 DIP8? Click to expand I got 6 from US based eBay seller - OPA1656 DIP8 Ultra Low Noise and Distortion FET-Input Audio Operational Amplifie | eBay No complains at all. In all, I will say the changes are noticeable, but not earth shattering. The high capacitive load You should be able to find single-to-dual DIP8 adapters for mounting 2xAD797 on a DIP8 socket. Assuming the voltage noise has a white and a 1/f part, which seems to be correct, for the total RIAA- and A-weighted noise, what matters is the noise around 1162 Hz. 80. 1-nV/√Hz as well as an extremely low distortion level of 0. Vivement conseillé ! (0) (0) This review has been posted for AUDIOPHONICS OPA1612 Dual OPA DIP8 (Unit) See more 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. As you can see, opa1656 exibits sharp change in RTI offset about 6-7V (powered +-12. AIYIMA A04 is 2. But I think careful gentle bending and soldering will make it fit. This chip doesn't fit in the common DIP8 packaging, but thankfully @Audiophonics sells a pre-modified OPA1656 for 5 €. 1uf TDK's 4) Replaced the 4 opa caps nearest the 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 OPA1652: 1Mb / 29P Std Edition. Thread starter daniboun; so looking at your tables you have 2 AD797(x2) in the I/V stage with 1 OPA1656 as the Buffer, together making up the "buffering output high quality DAC", so AD797(x2)x2 -> OPA1656 ? Dip8 is footprint of most trough hole opamps. 1 the one in the lower left corner in the orientation of the text, under the white stripe? I soldered some OPA1692 to DIP8 adapters yesterday. -131 dB THD+N at 1kHz, 600 ohm TWO Texas Instruments (Burr-Brown) OPA1656 Dual Discrete DIP8 OpAmp. The OPA1656 is installed in my AIYIMA amp and I will give a try into my 3E Audio amp as well to compare. lib SYMATTR Value2 OPA1656 SYMATTR Description TI/BB Audio FET Opamp to get the I am using a double AK4497 DAC with 4 OP amps : 2 OPA1656 + 2 OPA1611 (single) + two separate linear PSU. R e s i s t o r Nu t i o n i s e C o n t r i b o VN e g a t l o ( i n r o t i n t o u C b e s i o OPA1656ID Texas Instruments Operational Amplifiers - Op Amps SoundPlus™ ultra-low noise and distortion, Burr-Brown™ audio operational amplifier 8-SOIC -40 to 125 datasheet, inventory & pricing. The OPA1656 is a Burr-Browntrade; operational amplifier (op amp) designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. Took me a whiiiile. Acapella Member. The OPA1656 immediately raised my attention, plus there was/is a long thread about it on diyaudio. 3-band equalizer High end Floor speakers (Ribbon tweeter) 93DB / 100RMS / 8 ohms Source : No PFFB Sound quality : With the 4 OPA1656, compared to the AIYIMA TPA3251. kal. 5 µV/°C), and low bias current (±5 pA) combined with very low broadband voltage noise (3 nV/√ Hz) . Current noise: 6 fA/ Hz at 1 kHz. Breeze TPA3255 XLR Balanced Amplifier TearDown : DIP8 Op Amps. 00-PAIR TWO Sonic Imagery Labs 995FET-Ticha Discrete OpAmp API VTV Amplifier $ 132. 11. 5V inside of the positive rail . Just getting a better (cheap) opamp worth it. I check Vout as well OPA1656IDR Texas Instruments Operational Amplifiers - Op Amps SoundPlus™ ultra-low noise and distortion, Burr-Brown™ audio operational amplifier 8-SOIC -40 to 125 datasheet, inventory, & pricing. <br> New Purifi Buffer in V2. SR e c r u o c t s i (s e e n a : ) V oltage N oise ( nV) 1M 100k 10k 1k 100 10 1 01. The bypass coupling caps are fine - need 2000uF electrolytic back to back on output though. 5 ± 10 ± 8 ± 6 ± 4 ± 2 0 2 4 6 8 10 Common-Mode Capacitance (pF) Common-Mode Voltage (V) C004 OPA164x Family Traditional JFET-Input Amplifier 対象オークション 「☆opa1656(2回路)1個搭載dip8変換基板1個☆」 は 「1656」 を含む落札商品の中で、全318件中およそ 195 番目に高額です。 「1656」 を含んだ関連性が高いと思われる落札商品 47,600 円. 5532 can indeed sound bass heavy and compensate for small speakers, but it is a muddier / less differentiate bass, whereas OP1656 has IMHO both impact and clearness on the bass lines. The NE5532 is perfectly fine. star =Top documentation for this product selected by TI. amb Site Admin Posts: 12153 Likes: 285 posts Liked in: 766 posts หน้าแรก; ข้อมูลผู้บริหาร; ข่าว/ผลการดำเนินงาน. 00-PAIR TWO Sonic Imagery Labs 990Enh-Ticha 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. The FET This leads me to believe there could be an issue caused by the back-to-back diodes across the inputs of bipolar (LME49990, OPA1612) and CMOS op amps This OPA1656 OPA from Texas Instrument offers very good performances for audio use. There is basically no difference between njm4585 opa1612 and opa1656. 00015 Be the first to review “New ClassD Ultimate MKII DUAL Discrete OpAmp DIP8 VTV Amplifier” Cancel reply. Should I put some OPA1656 in a metal can and see if anyone wants some OR you can shield the ckt and do much the same thing perhaps Wonderful that TI can keep that DI process going after all these years. Bass is clean and punchy. OPA1656 had respectable slew rate without slew boosting so I opted to forego that circuitry in the audio part. Each adapter has two OPA627AU op amps, one on top and one on the bottom. Tested 2 units, both channels, I have 2 more - not OPA1656 DIP8 Ultra Low Noise and Distortion FET-Input Audio Operational Amplifie (#333850298075) d***a (95) - Feedback left by buyer. 8 40 Reviews ౹ 155 sold. There are 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. Find many great new & used options and get the best deals for 2pcs SOCKET NEW OPA1656IDR OPA1656 OP1656 ON DIP8 at the best online prices at eBay! Free shipping for many products! Benefit is lower dc offset and less distortion also high open loop gain also superior stability. Joined May 9, 2023 Messages 9 Likes 2. 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. Easily Replaceable DIP8 Dual Discrete Op-amps (Tested this with stock op amps and with sparkos, opa1612, opa1656, and opa2134. Much better performance than an lm4652. Cancel; Up 0 True Down; Cancel; I have my BrownDog SOIC-to-DIP8 adapters now, and the OPA1656 op amps are due to arrive this Thursday from Mouser. 5A. There will be a graph in the final datasheet. With a wide supply voltage range and DIP8 mounting, it 販売コード 110255 型番 ae-opa1622-dip8 発売日 2016/03/01 メーカーカテゴリ 株式会社秋月電子通商 PAIR OPA1656 Opamp in DIP8 adapter for VTV Amplifier Custom Buffer $ 48. . Cimarron has the 1641 in SOIC-8 OPA1641AIDR Texas Instruments - Cimarron Technology They can also mount SOIC-8 on a DIP-8 adapter. big speakers and above all flexible with the possibility of personalizing your sound with your favorite OP amps in DIP8 format and even the Breeze TPA3255 XLR Balanced Amplifier TearDown : DIP8 Op Amps. Its dynamic range is widely maximized, and Cet AOP OPA1656 de Texas Instrument offre de très bonnes performances pour une utilisation audio. I would have no problem staying with them, but I like tinkering. For the case of AK4499 the NEW 2pcs OPA1656IDR OPA1656 OP1656 ON DIP8 SOCKET. 1 is the amplifier we produce for our customer. 1 KB · Views: 176 Reactions: robertospeed and Karu. Burr Brown OPA1656 OPA1656ID DIP8 DIP-8 PCB Opamp Op Amp Hifi OPA2604 NE5532 | eBay Skip to main content 1-5PCS opa1656 Original opa1656idr sop8 to dip8 op amp Ultra-Low-Noise Low-Distortion FET-Input Audio Operational Amplifie . I was thinking of even buying the opamp and the dip8 adapter off of digikey but I don’t think I’ll be Hi John Yes, did it my way 1. Great seller,fast shipping,nice item. ch TPA3116. OPA1656-DIP8 BrownDog adapter. These were wired to use USB input to the Swing from my laptop, the DAC (fixed voltage) RCA outputs of the Swing to the RCA inputs on the Fun, and the Hifiman He560, Sennheiser 800, and Campfire Cascade (with Cloth pads) used for all The OPA1622, dual, bipolar-input, SoundPlus™ audio operational amplifier achieves a very low, 2. So I used a different dip8 adapter for the opa1612 and opa1656 and made $9. Hope this helps! Richard S. To compare : OPA1656 bring the Bursons V5I to their knees as well and keep in mind : Burson V5I = $70 vs $10 for OPA1656 OPA1656 is a ultra low noise fet operational amplifier and delivers a low distortion of 0. New BUF634A has higher slew rate, wider BW and decreased quiescent current in wide-BW The Buffer has Full balanced inputs with DIP8 OP Amps, you can update it. 6 fa/rtHz broadband current noise. OPA1655 と OPA1656 (OPA165x) は、信号の忠実度の維持が重要なオーディオおよび産業用アプリケーション向けに特に設計された Burr-Brown™ オペアンプです。FET 入力アーキテクチャにより、低い電圧ノイズ密度 opa1656 Operational Amplifiers - Op Amps. Buy It Now. So maybe they shouldn't be used on a dip8 converter. Opens in a new window or tab. For more quantities or models, please feel free to contact me！<br><br>We located in the biggest electronic market in ShenZhen, China. When I first got my A07, i fell down the opamp rabbithole. Presumably its temperature dependence is also a random variable with zero mean; when transistors 1a and 1b match perfectly, there is no offset and no temperature dependence, when VGS1a is greater than VGS1b you get AUDIOPHONICS OPA1656 Dual OPA DIP8. 00. It has a very good dynamic range and a low The high bandwidth and high open-loop-gain design of the OPA1656 provides a low distortion of 0. NPO Capacitors. Nothing changes in life the same arguments in the 80,s/90. 5nV/rtHz, over 80Khz, gives 0. You will need to use small SOIC8 to DIP8 adapter. I looked at the Slew Rate If you follow schematic above it should work. Smallest Discrete Op Amp On The Market. C $43. g. S. 使用 OPA1656时、我是否正确地假设电路的最佳噪声系数为0. OPA1656 is pretty versatile (will improve basically anywhere), so I guess is a good recommendation. The sound is now far more musical, The OPA1656 is a Burr-BrownTM operational amplifier (op amp) designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. It's a killer OpAmp, and better suited to non-inverting buffer duties than the OPA1612/2211 Depends on at what frequency you look; noise-wise, the OPA1642 is better below 500 Hz and the OPA1656 above 500 Hz. ••• Maybe I'm too thick, but I still don't get it. 2V inside the negative rail and 2. New products. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety SMSL SU-10 vs M500 MKIII vs DO300 21 vs 9 vs 11 dual op-amps OPA1612 (accoring to the spec from smsl-audio) What is the Op-amps doing in that? M500 SINAD is higher than DO300 with less op-amps. dip8. In particular, it has very good dynamics and a low level of harmonic distortion. IMHO the outcome was mostly decided by how the opamps responded to the RF coming out of the dac chip. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety I am selling two 1x OPA1656 Op Amps from my personal collection. In it's datasheet there is an example headphone amp circuit using the OPA1656. Quantity: 10 available 21 sold. It ensures a very low noise density of 1. What about caps I agree, this why I was really surprised ) Since I don't have the last DrMordor version with DIP8 socket, I can't test with my OPA1656. " Let's test this out! AnalogSteph had recommended the OPA1656. The OPA1655 and OPA1656 (OPA165x) are Burr-BrownTM op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. OPA1656 or 1612 DIP8 socket to your own Soft Start circuit to avoid inrush current and allow standby mode Cooper banane plugs TWO Texas Instruments (Burr-Brown) OPA1656 Dual Discrete DIP8 OpAmp. Verified purchase. TI’s OPA1656 is a SoundPlus™ ultra-low noise and distortion, Burr-Brown™ audio operational amplifier. I think this is a very impressive amp for its price, and I can equally enjoy listening to this amp driving my KEF LS50s in my living room system. Seller Store kal. I ended up staying with this one. But for DIY purposes there is a version pre-mounted on a DIP8 adapter. DrMordor is going to release soon a new Module with OPA1656, I spoke with him yesterday. Il possède notamment une très bonne dynamique et un faible niveau de distorsion harmonique. 00026 % 100W, f=1kHz 0. It is using the same chips as the Soncoz SGD1 ) At first sight, the DAC is really really well made with quality components . The op amp offers a temperature range of -40°C to +125°C and is available in an 8-pin SOIC package. Assuming proper design, VGS1a - VGS1b is a random variable with zero mean. derosnopS. The OPA1622 offers extremely-high ac PSRR and CMRR specifications that eliminate noise from power supplies, making the OPA1622 Mediums : With the OPA1656 the mids are straight and very neutral. A TSSOP8 to Your oap is a dip8 but there are also adaptator pcbs for soic smaller casing oaps for them to stack on a DIL8 area. The OPA1656 is a Burr-BrownTM operational amplifier (op amp) Audiophonics is proud to present the OPA1656 based on a genuine Texas Instrument chip. Its voltage noise density is also very low (2. Muses02, will fit into these newer style (round holes) dip8 adapters PCB mounts (with a little effort) as well but the old style dip8 receptacles (square looking holes) don’t work very well with the round pinned adapters. 5 V to 36 V) on 3. Features: –Designed by Andrew Sparks of Here there are a number of options: BJT-inputs without bias current cancellation (OPA1622), Super-Beta BJTs (OPA2210), Low voltage noise JFET and CMOS (OPA1642, OPA827, OPA828, OPA1656/2156). Tried in this place OP275, OPA1612, OPA1642, OPA1656 and OPA828. Opa827 was my favorite but expensive and doesn't have much current. US $ 6. If haven’t ordered your Opa1656 samples yet from TI you might as well tacit the Opa1692 since the shipping may be a flat rate as well??? Last edited: Jul 23, 2019. I've just ordered from 3E Audio the 1x480W TPA3255, 2x260W TPA3255, and the DSP ADAU1701 board - for fun. or Best Offer +C $19. It occurred to me that a more modern & higher performing part must exist at a lower price - a win-win scenario if ever there was one. PAIR OPA1656 Opamp in DIP8 adapter for VTV Amplifier Custom Buffer $ 48. Hummmmm seems you don't know your own products. Also tried opa1622 which was not as good as the opa1612 or opa1656. Opa1656 is pretty good with 100ma. Condition: New New. Audiophonics is proud to present its OPA line-up with the OPA1656 based on a authentic Texas Instrument chip. OPA1622 DIP8 High Current Output Low Distortion Dual Op Amp AUDIOPHONICS OPA1656 Dual OPA DIP8 (Unit) Wishlist . 9 mA of supply current to accommodate the power supply OPA1656IDR Texas Instruments Operational Amplifiers - Op Amps SoundPlus™ ultra-low noise and distortion, Burr-Brown™ audio operational amplifier 8 The OPA165x features a high bandwidth and open-loop-gain design, delivering a low distortion of 0. Viewed products. 1x 2pcs OPA1656IDR. Test done with only one channel swapped, so it's quite easy to compare this way (also swapped the opamp for the other channel, background noise moved into the other ear). Find parameters, ordering and quality information. The only thing I could find was OPA1641 and not even the right package. (Viborg style) There is also a soft start module to limit destructive inrush currents The amp is absolutely dead silent even with my ears glued to the speakers. ) 3. May be 828 will be better, but i have to do some thing in the board to extract best of it. Thread starter daniboun; The OPA2210 definitely worth trying! as good of the OPA1656 in term of Soundstage but with the best of the OPA1692. Home. Sign in to check out. I have been listening the double mono Merus Infineon amplifier for 5 days now this amplifier is really great : the more I listen to it the more I keep on saying that it is an excellent "all around" amplifier (can play any kind of OPA1656ID Texas Instruments Operational Amplifiers - Op Amps SoundPlus™ ultra-low noise and distortion, Burr-Brown™ audio operational amplifier 8-SOIC -40 to 125 datasheet, inventory, & pricing. The third time I added in njm4585 very cheap but pretty good opamp in the comparison. 0007 % 10W, f=1kHz 0. 1) Replaced the main caps with 4500uf United Chemi-Cons 2) Bypassed the main caps with 2x 2. The idea of this group buy is to propose a full pack @fair price for a brand new Purifi Buffer : SPEC : - THD: 0,00026% @ Vin 2,5 V RMS - GAIN: 14 dB - BANDWIDTH: 2 Hz - 150 kHz - SLEW RATE: 24 V/uS - CMRR: > 100 dB @ 60 Hz 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: 3Mb / 42P [Old version datasheet] OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-Brown™ Audio Used OPA1656 in I/V of PCM1792 in dual mono configuration. This OPA therefore has low flicker noise and low offset voltage. 5mA. If you want a more neutral sound, the OPA1656 op amps are a great choice. 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 $ . com DIP8 OP amps socket (OPA1656 here) Hypex HPR12 Voltage regulator; The enclosure is a Galaxy GX alu case made in Italy and the Speakers terminals are in Copper. Other candidates are muses8920 which is almost as powerful and lower distortion. 000035% (-129 dB) at 20 kHz and improves audio signal OPA1656IDR - SoundPlus™ ultra-low noise and distortion, Burr-Brown™ audio operational amplifier in a SOIC (D) package with 8 pins. It has the most stable input capacitance vs. Sep 20, 2023 #1 Hello together, i want to put one of the mentioned OP Amps in my amp. OPA2156 does not, it is closer to a single pole response. Joined Dec 5, 2018 Messages 4,246 Likes 3,593. Past month. Try Find many great new & used options and get the best deals for 2pcs OPA1656IDR OPA1656 OP1656 ON DIP8 SOCKET at the best online prices at eBay! Free shipping for many products! Hi amigos, New Purifi Buffer in V2. A TSSOP8 to DIP8 adapter should work. 9nV/rtHz broadband voltage noise. They sound amazing. Not targeting Mouser here , most of the others are worse. Other cheap ones on my radar - OPA2134PA, OPA1612, LM4562NA. The OPA1656 is the new kid on the block, and has the most impressive data sheet specs. With regard to the decouplers, because I just put them in and left them there I really should take them out About OPA1656 DC output offset: depending on gain, a low level circuit with the OPA1656 can show a few mV as output offset. Added a new OPA1656. 0%, Location: Santa Monica, California, US Ships to: US, Item: 333850298075 333850298075 Find many great new & used options and get the best deals for 2 pcs of OPA1656 DIP8 Ultra Low Noise and Distortion FET-Input Audio Operational at the best online prices at eBay! Free shipping for many products! The OPA2210 definitely worth trying! as good of the OPA1656 in term of Soundstage but with the best of the OPA1692. I found its poorer I purchased 10 OPA1656's. Call Cimmaron at 918-636-0662 to make absolutely certain this will work for you. But note that OPA1656 is not available in DIP8 through hole. SS3602 Dual. and made with Sumusu Japanese resistors and Nichicon KZ Muse caps. I put some OPA1656 (THD + N @ 1 kHz : 0. 2uf + 1x . It is absolutely hopeless otherwise. OPA1656 as DC Servo Hi I finally tried this new generation CMOS process dual op-amp in the U1 DC servo position. This OPA offers excellent performance. 48. It sounds really close to the OPA1656 (to me, and on my setup) for a fraction of the cost and no need for DIP8 adapter. The OPA1656 operates over a very wide supply range of ±2. AliExpress assurance. Please refer to reason number 3 on the negatives if you have hard to power speakers. Compatible with the VTV Amplifier Custom input buffers (tube or solid state), but may be used in other amplifiers as well. XZD-1752PRO is 2. Normally you'd regularily search in the manufacturers new product listings first for any new interesting products. The OPA1656 is a Burr-BrownTM operational amplifier (op amp) designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. Please clear your search and try again. Applications: Preamps. And it will Excellent news, glad you are happy. I have never bothered to buy a OPA627/637 and listen to it in action, one day perhaps but I think I will not be able to tell the difference Hello diyAudio forum, I was looking at the SE/SE Wire headphone amp recently but I found out that the LME49610/49600 buffer isn't in stock anymore so I looked at alternatives and found the BUF634A. In final have to say, that OPA1656 is best of the best in I/V for me to now. 1. That is, when you do the math, you find that 1 OPA1656 DIP8 Ultra Low Noise and Distortion FET-Input Audio Operational Amplifie (#333850298075) h***c (2551) - Feedback left by buyer. In playmate 2 they seem to be more at home. AIYIMA XZD-1752PRO and Tilear 2. Once I receive the OPA1656 op amps, I will try to draw more detailed Texas Instruments OPA1612 Series Audio Amplifiers are available at Mouser Electronics. The amplifier sounds great and very loud with the We have a lot of products and only show a small number of products on the website. Unique features, such as rail-to-rail input and output voltage ranges, wide bandwidth (25 The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. 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. ROSE HIFI RA280 Amplifier Class AD 2x250W 4Ω/8Ω 3 449,00 € ROSE HIFI RA280 Amplifier Class AD 2x250W 4Ω/8Ω 3 449,00 € This is my first time doing anything DIY with audio. Similar items. NEW 2pcs OPA1656IDR OPA1656 OP1656 ON DIP8 SOCKET. 000015% at 1kHz. 1641 is one of their many options. The FET-input architecture achieves a low 2. 1656. 000015% at 1 kHz. 2PCS OPA1656 OP1656 op amp Ultra-Low-Noise Low-Distortion FET-Input Audio Operational Amplifie . 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 eBay, which i don’t know if I want to wait. Thread starter daniboun; Start date Jan 21, 2022; Your experience is very similar to mine with the op amps, only in my case I had a pair of OPA1656 vs your Muses 8820. The Audiophonics OPA1612 is mounted on a DIP8 bracket and can therefore be easily installed on a PCB with a connector of this type. The LM4562 is an exception, but otherwise it are the fast op-amps that JRA has trouble with: Misbehaving: OPA1656, gain-bandwidth product 53 MHz LME49990, 110 MHz OPA1612, I'm just checking to be sorta sure of what I got from China and/or whether maybe the DIP8 assembly needs further cleaning with 91% IPA. 49 Buy It Now or Best Offer free,30-Day Returns. Not the most characteristic op amp with “great” sound but it’s soundstage is dynamic and far reaching that WILL New ClassD Ultimate MKII DUAL Discrete OpAmp DIP8 VTV Amplifier $ 71. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety Hi amigos, I am selling my personal Purifi Power amp made with care and great materials like new ! Buffers are Custom with HPR voltage reg. Past 6 months. The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. 00-Staccato OSH DHa Double Discrete OpAmp DIP8 Format $ 78. 2. OPA1656 will not have the flat, 5 ohm, output impedance of the OPA1622. This OPA offers excellent performance for audio applications. 5Volt, just because the THD with -150dB vanishes in the noise. It also comes with a DIP8 bracket which, once installed, makes it easy to change the OPA. Find many great new & used options and get the best deals for Opa1622 Dip8 Double Op Amp Finished Product Board High Current Output Low D N6k2 at the best online prices at eBay! Free shipping for many products! item 2 Batch of 4 pcs of OPA1656 DIP8 Ultra Low Noise and Distortion FET-Input Op Amp Batch of 4 pcs of OPA1656 DIP8 Ultra Low This is a direct quote from D. Weight. This is gold, and may convince me to spend the extra to get OPA2828 (provided that I feel confident soldering those to DIP8 adaptors), even though I have spent gravely on getting the OPA627s. 1 00. DACs. Aol for the OPA2134 with a 600 ohm load has an output swing that is 2. 1pcs OPA1656IDR OPA1656 OP1656 Integrated Circuit IC SOP8. Safe payments Payment methods used by many international shoppers. OPA1656IDR – Audio Amplifier 2 Circuit Rail-to-Rail 8-SOIC from Texas Instruments. 1piece OPA1656 OP1656 op amp Ultra-Low-Noise Low-Distortion FET-Input Audio Operational Amplifie. View all 7. tech (395) 100%. OPA1656 Noise Curves. Type This question is triggered by a repair I recently did where the originals, while still available, were stupid expensive. Sounds bad, opa1655/opa1656 is MILES better. there is also much talk about the NE5532 being fake also and i ended up going to OPA1656 on DIP8 sockets im not a expert but i feel it sounded better with my 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. OPA1656 on DIP8 socket. and Just going into some more details with the OPA1656: with an average 3. 4. <br>We are working hard to offer genuine and new products and offer good service, OK, so I'm about to solder some OPA1656 to DIP8-adapter boards, and start getting anxious about the pin orientation. Mouser offers inventory, pricing, & datasheets for Texas Instruments OPA1612 Series Audio Amplifiers. 2 dB at 1 kHz, while driving a 32-Ω load at 100-mW output power. Its DIP8 format allows for quick assembly. Order today, ships today. ••• Find many great new & used options and get the best deals for 1pcs OPA1656IDR OPA1656 OP1656 ON DIP8 SOCKET #WD9* at the best online prices at eBay! Free shipping for many products! OPA1656 / OPA1656IDR Texas Instruments TI Ori Original Asli Elantech - TERSOLDER di Tokopedia ∙ Promo Pengguna Baru ∙ Cicilan 0% ∙ Kurir Instan. Batch of 4 pcs of OPA1656. 00-PAIR OPA1656 Opamp in DIP8 adapter for VTV Amplifier Custom Buffer $ 48. OPA2210 is another great alternative and sounds even better ) I ship for free in EU only Paypal only please PRICE : 1060€ Measures : 1W, f=1kHz 0. Supports simple circuit simulation. See preview. Opa1656 has good phase response at high frequency. Combining a rail-to-rail output stage with a 3 gain stage architecture in CMOS normally results in regions where the output impedance is inductive. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety 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. 5mm x 20mm) The OPA2210 is a jewel ! I tested the OPA1622, OPA1612, OPA1656, OPA1692 The OPA2210 definitely worth trying as I said before ! (I sent a pair to The OPA1656 operates over an ultra-wide supply range of ±2. jpg. Current Nise o butrionConti (OPA1656) T talo Noise n uttioribCon (OPA1656) Figure 3-2. But yeah I’m not looking to spend a ton on this. We promise try our best to help solve any problem. The cost is about $30 in a local store. 25 V to ±18 V (4. OPA1656 sounded worst, Muses 8920 sounded best. Low distortion Hz at 10 kHz. Not only was that 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. I am using opa1612 (bipolar) and opa1656(fet) opamps. My wishlists . Thread starter Acapella; Start date Sep 20, 2023; A. We are in endeavor to provide you best service and keep you a happy buying experience from us. 12. So they have the same cover. 3. <br>We specialize in electronic components more than 10 years, such as ICs, Transistors, Diodes, Resistors, Capacitors and so on. 1uf each Murata and TDK's 3) Updated OPA's to LM4562 and bypassed them (under board) with . 00-New ClassD Ultimate MKII DUAL Discrete OpAmp DIP8 VTV Amplifier $ 71. Model Number. Compressors. Taking a 500Khz BW, increases this THD+N figure to -123dB. Self - quote- "in any case a maximum slew rate greatly in excess of what is required appears to confer no benefits whatsoever" ( 2011 ) . I prefered the sound of my DAC with the OPA1656's hands down even over the discrete op-amps. But it’s easy to solder those directly by hand. 100% Class A Biasing. Compatible Audio & Video Equipment Style. Pricing and Availability on millions of electronic components from Digi-Key Electronics. 5 KB · Views: 233 OPA1622-DIP8. 67. from United States. Enough power to run my Kef Q150s in a medium sized room and small room. However I have a couple PCB that use singles. 1% Metal Film Resistors. 6 dBc (Second Harmonic) +-V DC Audio DAC The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. OPA1656 - Better imaging / separation of instruments. Since I am not interested in the V6 Vivid Dual that it comes with. Ultra-low Distortion and Noise Audiophile Unbalanced to Balanced Converter / pre (#334610928588) Sorry to interrupt, I've had a hiatus of about a year in my hobby projects / time to read up on forums because of Covid-19, quarantine in the family, life, work and all that jazz. Forums. 5 5 5. Soic8 is the smd equivalent. V6s are solid though Maybe best on market for dip8. common mode voltage that I've measured on any op amp. Compared to the 5532, I found that the OPA1656 brought a lot more warmth and "naturalness" to the vocals. Hi amigos, I share with a quick review of an unknown new DAC. The OPA1656/1655 released after the OPA828 are also excellent enough to dispel the image of past CMOS input. The OPA2156 is the first in a planned new generation of 36-V, rail-to-rail operational amplifiers (op amps). In the Miro1360 thread about ad1862 dac chip you can find free gerbers to make them printed by a pcb maker, they are cheap nowadays. I expect that it's made on one of TI's fancy analog processes as are their other recent good-for-audio op-amps. It is built on Texas Instrument's Super Beta precision complementary bipolar semiconductor process. 0ch TPA3255. gussesy8225 (1127) 99% positive; Seller's other items Seller's other items; Contact seller; US $19. So far, this is the only store where you can buy it: https: Currently, the op chip used on AIYIMA A04 & A07 is NE5532. 5V). Chipset. IME the OPA1656 gives you much more details than any 5532 and also a much better bass. 電子部品,通販,販売,半導体,ic,led,マイコン,電子工作opa1655dr デュアル(2回路)化dipモジュール秋月電子通商 電子部品通信販売 Breeze TPA3255 XLR Balanced Amplifier TearDown : DIP8 Op Amps. Of course that is because in LTspice all instances of the device are identical. tech (365) 100. (Leaf Dac Dual 9038Q2M ) This DAC is using a dual 9038Q2M chips and fully balanced and also equipped with DIP8 OP amps and removable BT module. ข่าวฝาก Opa1656 SOP8 opa1656idr ออริจินัลไปยังแอมป์ DIP8 op ที่มีเสียงรบกวนต่ำเป็นพิเศษเครื่องขยายเสียงในการปฏิบัติงาน FET-INPUT OPA1656 / OPA1656IDR Texas Instruments TI Ori Original Asli Elantech - CHIP ONLY di Tokopedia ∙ Promo Pengguna Baru ∙ Cicilan 0% ∙ Kurir Instan. com with a TI insider involved. Burr Brown OPA1656 soldered onto a SOP to DIP8 adapter. Because under the hood, it is unknown ic opamp biased with a resistor (worse way) into class A. The OPA1656 is a Burr-BrownTM operational amplifier (op amp) designed specifically for audio and industrial applications, where maintaining signal fidelity is I propose this group Buy for a brand new Purifi Amplifier with a Custom Buffer using OPA1656 DIP8. Best SQ have with 1656. OPA1656 SoundPlus? ultra-low noise and distortion, Burr-Brown? audio operational amplifier. Find many great new & used options and get the best deals for 5pcs OPA1656IDR OPA1656 OP1656 ON DIP8 SOCKET at the best online prices at eBay! Free shipping for many products! Sound: For purposes of these tests, I started out with a Burson Swing and Fun DAC and amplifier. Technical documentation. Composite amplifier is one of the best application with opa1656. 88-14%. RIAA Amplifiers. This is a great reference opamp to aid in selecting discrete upgrades. It's best use as an alternative to opa1612 when noise is not a big concern. You have answered another one of my questions before I ask - input impedance - I was reading earlier about OPA1656 vs OPA1612, using OPA1656 for first 2 stages and LM4562 for stage 3 & 4: 5. Share It fits in about any DIP8 socket, regardless the case size. Circular Machined Gold Plated Pins. If I'd imagine, the njm4585 is a tiny little sticky sounding in the Basically, doesn't matters what opamp I stick into the DIP8 socket, the background noise is still lower then LME49860. OPA1656 Texas Instruments Linear parts available at DigiKey. ± 180 ± 160 ± 140 ± 120 ± 100 ± 80 ± 60 ± 40 ± 20 0 0 5k 10k 15k 20k Amplitude (dBc) Frequency (Hz) C005 -133. 9‑nV/√ Hz voltage noise density and 6‑fA/√ Hz current noise density, allowing for very-low noise performance in a wide variety The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. Two Pole Compensation. somebodyelse Major Contributor. I ended up with a couple extra from a project. 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 PAIR OPA1656 Opamp in DIP8 adapter for VTV Amplifier Custom Buffer $ 48. Seeing pictures in reviews of your amp, it is dip8, and they supply 5532 opamp in Menu. PRODUCTION DATA. Has both very low voltage noise and low input bias current as well as high current output capability and very low THD. Bith are unity gain stable. mouser. 75. This OPA2210 is a dual AOP mounted on DIP8. Empty interface boards are usually described as SOIC8 TO DIP8 Adapter PCB making it cheaper to do it Buy a pair of the DIP8-mounted OPA627AU op amps. Click to expand Setup : BRZHIFI TPA3255 amplifier SMPS LLC integrated PSU 4 OP Amps DIP8 socket Bluetooth QC. LME47920, LM4562, OPA2134, OPA2132 DIP8 opamps, or SOIC8 on adapters like OPA1656, OPA1678. But I experience some stability issue and over heating. No products. I'd prefer an OPA1642 to the OPA1656 due to lower low frequency noise. opa1656が最新でスペックの高さが評判でしたので、最初は期待しましたがドライであっさりした音で最初はつまらなく感じました。しかし、ths4651と組み合わせると音響の下支えを担うように鮮やかさを増すようになりました。opa1656は良いです。 4 4. Although NE5532 performs well, many audiophiles still want to improve the sound quality by replacing the OP chip. - updated the OPA2210 in DIP8 (genuine from Mouser) - changed the 4X SMD Caps Power caps 470uf / 50V > Nichicon Audio Grade Find many great new & used options and get the best deals for 2pcs OPA1656IDR OPA1656 OP1656 ON DIP8 SOCKET at the best online prices at eBay! Free shipping for many products! - updated the OPA2210 in DIP8 (genuine from Mouser) - changed the 4X SMD Caps Power caps 470uf / 50V > Nichicon Audio Grade UKW1H471MHD 50V / 470UF (12. You can see the receipt where I purchased from Digi-Key. The process supports design scales of 300 devices or 1000 pads. OPA1656 Dual OPA DIP8 (Unit) Wishlist . Applied Filters: I am using OPA1656 for duals. 00-PAIR OPA1612 Opamp in DIP8 adapter for VTV Amplifier Custom Buffer $ 48. Free shipping. On the α24, this is a non-issue. I 'd show two IC, opa1692 (good one) and opa1656. Is the OPA1656 the correct opamp to use? I heard it was the best so that’s Hello, i just compared my current favourite opamp opa1656 vs the much older opa627 (its a dual module from audiophonics, the IC`s are "used" if this Menu. I doubt that the OPA1656 is made on a jellybean CMOS process. I cannot recommend a 48V power supply because of the A07 internal temperature with the 48V PSU, in case I OPA1656 ACTIVE SoundPlus™ ultra-low noise and distortion, Burr-Brown™ audio operational amplifier SoundPlus™ audio op amp with wider bandwidth and lower noise. Here is what Ive done so far. Sep 28, 2020 #231 robertospeed said: I changed the OPA chips of my AIYIMA A07, put the OPA2604AP We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). This devices offers very low offset voltage (±25 µV), drift (±0. Check out as Find many great new & used options and get the best deals for 1pcs OPA1656IDR OPA1656 OP1656 ON DIP8 SOCKET at the best online prices at eBay! Free shipping for many products! 電子部品,通販,販売,半導体,ic,led,マイコン,電子工作opa1655dr デュアル(2回路)化dipモジュール 完成品秋月電子通商 電子部品通信販売 1PCS OPA1656IDR OPA1656 OP1656 ON DIP8 SOCKET | eBay I can only afford these at the moment . Last edited: 2020-09-15 6:34 am Opa1622 is supposedly a better choice. Smarter Shopping, Better Living! Aliexpress. BTW, traditional DIP8 op amps, e. The Opa1656 I received today is exceptional not something you wanna use as a “solo” act op amp but differently a must (imo) in a lpf or to drive headphones or even speakers (haven’t tried speakers yet to confirm though). Mic Amplifiers. Smart Filtering As you select one or more parametric filters below, Smart Filtering will instantly disable any unselected values that would cause no results to be found. I’m going to solder the IC to a soic to dip adapter then plug it into the the amp. 4 mV With the same configuration as above but reducing the feedback resistors by a factor of 10 for the first 2 stages, and increasing the bandwidth limiting caps to a frequency of 7. I would recommend the V5i if you like your amplifier/DAC but want to make it sound cleaner, clearer: and the Yes, I think I will just use the old DIP PCB instead of the SOIC PCB. 1 is now ready with OPA1656 in DIP8 socket. You can get these mounted on OPA1656 ACTIVE SoundPlus™ ultra-low noise and distortion, Burr-Brown™ audio operational amplifier SoundPlus™ audio op amp with wider bandwidth and lower noise. sony pmw-160 xdcam ハンディカムコーダー ビデオカメラ ソ Yes, here are my recommendations: 1) Replace your current fake* NE5532 Op Amps with real Op Amps like the OPA1656. 3V inside of each supply. 0ch TPA3251. According to the schematic, the pins map one to one from SO8 to DIP8, so this should work for you in a dual DIP8/SO8. Profitant d'une large plage de tension d'alimentation et monté sur support DIP8, il pourra remplacer de nombreux autres modèles. 5kHz (aggressive I know, but it sounded good to me and made a big difference with the noise) the Alright, next round of mods/changes complete. Here we recommend some replaceable OP chips. Brand New. The OPA1641 would be slightly better. DIP8 Compatible Package. I will measure the A07 output power and spectrum cleanliness with this power supply. (0) (0) This review has been posted for ORACLE II 02 Discrete Dual OPA DIP8 DIP8 : (plus gros, clipsable, pates plus longue) - comme les NE5532 retirés ci-dessus et de quoi adapter du SOP8 en DIP8 si besoin : (d'autres adapteurs sans soudures existent) L'OPA1656 ça coute 1$ par 1000 chez Texas : si tu peux trouver à l'unité tu soudes ça sur un support et ça te revient moins cher OP amps : Remove NES5532 Op amps > Install Genuine OPA1656 DIP8 socket (mouser) Will let you know more when the amplifier is going to be fully assembled ) Stock version A small 110*70*35MM TPA3255 module with : SAGAMI 7W14A inductors Full Nichicon caps, as below : Nichicon 2200UF/63V VZ serie power caps Nichicon FW serie I have ordered Mean Well RS-100-24 SMPS power supply, 24V/4. OPA1655. C $3. And much cheaper. US $7. 25 V to ±18 V or (4. 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). Compatible with the VTV Amplifier Custom input buffers (tube or solid state), but may be used in OPA1656ID – Audio Amplifier 2 Circuit Rail-to-Rail 8-SOIC from Texas Instruments. 9-nV/radic;Hz Find many great new & used options and get the best deals for Opa445 High Voltage 90v FET Input OPAMP Dip-8 USA at the best online prices at eBay! Free shipping for many products! The OPA1656 is a Burr-BrownTM operational amplifier (op amp) designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. TI recently introduced two devices worth looking into, updated BUF634A and OPA1656, both available as prototypes directly from TI. s at the "heyday " of audio in EW are appearing here and divided audio designers into two camps . Consider running a quality ~2200 uF 35v smoothing capacitor at the positive & negative output. 8-nV/√ Hz noise density with an ultralow THD+N of –119. Sound Cards. I am planning to replace the NE5532 in my Burson Funk with the OPA1656. 00- But no matter if they are original or not. The idea of this group buy is to propose a full pack @fair price for a brand new Purifi Buffer : SPEC : - THD: 0,00026% @ Vin 2,5 V RMS - GAIN: 14 dB - BANDWIDTH: 2 Hz - 150 kHz - SLEW RATE: 24 V/uS - CMRR I actually prefer the LM4562's more as they have a bigger soundstage and are more neutral, but not in a clinical way. 000035% (–129 dB) at 20 kHz If you love the OPA1612 you will love the OPA1656 too. OPA1656 are better in burson funk, the sound is more normal and no background noise. 00- The opa1656 this time is smoother than the opa2156 in previous test and opa1612 has better bass than previous. You usually don't get 40V supply capability on such a process. 000029%) inside. Previously they were JRC5534 then OPA134 and I was looking for something like the OPA1656 but single. Dual OPA DIP8 (Unit) The TI OPA1612 dual operational amplifier benefits from excellent technical characteristics, allowing very good electrical and audio performance. 7 sold. It offers exceptional performance in almost any audio application. The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. Crossovers / Filters. I expect the process has bipolar (both genders), JFETs and CMOS transistors available to the chip OPA1656ID Texas Instruments Operational Amplifiers - Op Amps SoundPlus™ ultra-low noise and distortion, Burr-Brown™ audio operational amplifier 8-SOIC -40 to 125 datasheet, inventory & pricing. The VTV Amplifier custom input buffer board’s modular design allows any DIP8 dual discrete or API form factor discrete opamp of your choice to serve as input buffer. No results found. I drew up a full schematic in Kicad of the circuit Find many great new & used options and get the best deals for 2pcs OPA1656IDR OPA1656 OP1656 ON DIP8 SOCKET #T6* at the best online prices at eBay! Free shipping for many products! The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. I found the Bass being sweeter, the fact I have know the products you said. asy using the ADA4627 as a template 3. 01 1 10 100 1k 10k 100k 2M 10M. HOWEVERthe OPA1642 draws about HALF the current, its gain A quick snapshot of the OPA1656 performance specs: 2. Type OPA1656 Dual OPA DIP8 (Unit) > Reviews. Gain Stages. One of my favorites. Skip the socket or adapter. OPA1612 or OPA1656. NE5532: The resolution is average, the high frequency is relatively dry, and the low frequency is For example, Aol for the OPA1656 with a 600 ohm load will have a linear output swing that is 1. 2 nV/√Hz), with a maximum current consumption of 2. 1-nV/√ Hz noise density with an ultralow distortion of 0. This super BETA Bipolar OP amps is really fast with a very low DC offset. D 0 0 6. Is pin nr. Another Im trying right now which is showing promise, and is dirt cheap, is the RC4560. New posts Search forums. Find many great new & used options and get the best deals for 2pcs OPA1656IDR OPA1656 OP1656 ON DIP8 SOCKET at the best online prices at eBay! Free shipping for many products! Find many great new & used options and get the best deals for 2pcs OPA1656IDR OPA1656 OP1656 ON DIP8 SOCKET #T9 at the best online prices at eBay! Free shipping for many products! Find many great new & used options and get the best deals for 2pcs OPA1656IDR OPA1656 OP1656 ON DIP8 SOCKET #E5 at the best online prices at eBay! Free shipping for many products! The OPA2210 definitely worth trying! as good of the OPA1656 in term of Soundstage but with the best of the OPA1692. SOIC-8 to 8-pin DIP Breeze TPA3255 XLR Balanced Amplifier TearDown : DIP8 Op Amps. 00-PAIR Sparkos SS2590 Pro Single Discrete OpAmp $ 119. lib file into the related LTSPice folder 2. 2) Buy a real Meanwell 24v PSU, then adjust the voltage all the way down to roughly ~21. 96 shipping. 5 6 6. Easy to use and quick to get started. 5 7 7. 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. When I was done they wouldn't fit the DIP8 In the discussion, @AnalogSteph stated "With this circuit I would explicitly condone opamp rolling. 6mV？ 400k 是否合理用于第二级源电阻？ 我还没有想到其他哪些方法可以降低电路中的噪声？ 在此应用中、是否还有其他运算放大器也能正常工作、甚至比 OPA1656更好？ Find many great new & used options and get the best deals for 1PCS OPA1656IDR OPA1656 OP1656 ON DIP8 SOCKET at the best online prices at eBay! Free shipping for many products! The fine pitch package of the OPA1622 was considered, by me and others that I asked, to be too daunting a task for the home DIY'r, whereas the OPA1656 in the SOIC package and LMH6321 in the DPAK/TO-263 package were quite doable and the calculated performance based on extrapolating the data sheet distortion curves etc. mbxyvkmukwelldunolsnenqdcbogxktakeipjstknpgikuwlupm