The reason why i want to use two opa627 is i cannot find an opa24. Chocolaty and syrupy though a good easy to listen to op amp but not my cup of tea as i prefer a greater insight into the mix. The gbw and slew rate of the 627 is higher than that of the 24 gbw of 16mhz versus 8, and a slew rate of 55 vus versus 10. Input bias current vs time from power turnon time after power turnon min input bias current pa 0 1na 100 10 1 12345 vs 24vdc v s 15vdc v s 5vdc commonmode rejection vs commonmode voltage commonmode voltage v commonmode. Opa627ap texas instruments integrated circuits ics. Aug, 2014 i have 2 opa24s and a pair of opa627 in my bugle 2 phono, i replaced the output 24 with a pair of 627s on an adaptor and found that the bass was improved, left it that way ever since. I feel like i had many other things nonengineering related that i could have posted about but i guess this was the last straw. So for its price, between the opas, it sounds right.
There is no way you will get ears fatigue with this opamp, but you might get bored. This particular one is limited in current to about 125 ma on each rail. Opa627ap texas instruments integrated circuits ics digikey. I threw it in one of my old buffered amps and was really quite surprised by the sound. Fetinput, low distortion operational amplifier datasheet. Dual fetinput, low distortion operational amplifier. Opa627 and opa637 precision highspeed difet operational. Texas instruments opa627 series high speed operational amplifiers are available at mouser electronics. Dual version available opa2604 fetinput, low distortion operational amplifier applications professional audio equipment pcm dac iv converters spectral analysis equipment active filters transducer amplifiers data acquisition opa604 description the opa604 is a fetinput operational amplifier designed for enhanced ac performance.
I have 2 opa24s and a pair of opa627 in my bugle 2 phono, i replaced the output 24 with a pair of 627s on an adaptor and found that the bass was improved, left it that way ever since. It is not bad, it has a nice color of sound, just a bit mellow with strong burr browns laid back. Searching for a opa627 opamp i found burson audio web page. I already have 4 of each so cost is not a big deal, although finding the right adapter might be. Tl431 d tl431a, b series, ncv431a, b series, scv431a programmable precision references the tl431a, b integrated circuits are three. Opa627, opa637 sbos165a september 2000revised october 2015 opa627 and opa637 precision highspeed difet operational amplifiers 1 features the opa6x7 is fabricated on a highspeed, dielectricallyisolated complementary npnpnp 1 very low noise. Is there a big difference in sound quality through these two. Ive used the 8620 from analog devices in a headphone amplifier ive built. Burr brown opamp op ic opa627sm 100% brand new perfect for audio pair triple quad or muti matched ics could be provided. How do i tell a fake opa627 637 from real do it yourself. Opa2604ap general purpose amplifier 2 circuit 8pdip from texas instruments. Compared to other operational amplifiers, such as tl083, they show better noise performance, improved output drive capability, and considerably higher smallsignal. For those of you unfamiliar with the meanwell dcw03a12 converter pdf 78kb it is about the size of an ice cube and takes anything from about 9 volts to 18 volts dc as input and puts out symmetrical regulated dual supply at plus and negative 12 volts dc. Ne5534d ne5534, sa5534, se5534, ne5534a, sa5534a, se5534a single low noise operational amplifier the nesase55345534a are single highperformance low noise operational amplifiers.
Pdf pcm63p 20bit pcm63p pcm63pk 116db 200ns 16times yamaha amplifier a 550 mash, 1 bit dac pcm63pk pcm63pj yamaha ic ym3623 ym3623 df1700p opa627 opa2604 capacitor cd 104 1uf 50v. I read a post at this site philip jacksons hifi diy project second preamplifier page that he replaced the opa24 with opa627 and some components like jfet xsistor and some caps and resistors. Ic datasheet pdfopa2604,pdfdual fetinput, low distortion operational amplifier. Opa2604ap texas instruments integrated circuits ics digikey. Having said that, however, this may just be what the doctor ordered for those who like a laid back. Offset voltage is lasertrimmed to minimize the need for interstage coupling capacitors.
Opa2604 dual fetinput, low distortion operational amplifier. Opa2604 provides wide dynamic range, even with high source impedance. Having used a net audio modified quad 4052 for the last twelve months complete with their excellent dual mono power supply, i was interested to learn that there was a superior op amp available for each of the quad 405s amplifier boards than the one net audio upgrade as standard, the burr brown opa604ap op amp. The opa627 isnt part of my tests because i was evaluating only dual op amps in dip8 packages. Help help and support order status shipping ratesoptions returns and order issues tariff information. Opa2604 iv opa627 dac pcm1702 x 4 2ndorder lpf 12 opa2604 iv opa627 x8 d. I dont know where to start but let me start by saying i just dont have it in me anymore. Opa2604 opa2604ap low distortion operational amplifier ic. Home ic integrated circuits audio, amplifier instrumentation, opamp opa2604 opa2604ap low distortion operational amplifier ic. Out of curiosity, i ordered an opa2604 as a spare chip along with several other usual opamps. Ive been reading more and more that folks are actually modding up to them. Opa2604 muses8920 which opamp is qualitatively more suited for my needs. The problem is i acquired some when there were some fakes going around.
Ad8066 even brighter than op275, but without the graininess. Ic datasheet pdf opa2604,pdfdual fetinput, low distortion operational amplifier. I have on had 4 ad8066s that i was going to have installed and was considering the opa627 s. Opa2604ap, opa2604 low distortion dual opamp, buy opa2604ap. The only difference between the ad8620a vs ad8620b is the voltage drift per changing temperature 0. The analog devices ada4627 is essentially a second source version of the opa627. Opa627ap general purpose amplifier 1 circuit 8pdip from texas instruments. If youre not satisfied with the sound of the opa24, id first look at upgrading other components, like the caps, resistors etc. The ne5532 is a internally compensated dual low noise opamp. Tl431d tl431a, b series, ncv431a, b series, scv431a programmable precision references the tl431a, b integrated circuits are three. These monolithic ic voltage references operate as a low temperature coefficient zener which is programmable from vref to 36 v with two external resistors. But, that said, im fairly confident in a typical configuration with the circuit optimized for both parts, and in a blind test you wouldnt hear a difference unless it was a really high gain circuit and the rather mediocre noise performance of the. Op275 leaner and brighter than stock, almost grainy. The harmonic texture seems more complete and realistic compared the the sparkos devices.
Opa2604 sounded very warm, very laid back and very easy to listen to but slightly veiled in the detail department. Aug 01, 2011 the opa627 isnt part of my tests because i was evaluating only dual op amps in dip8 packages. Brazilian love affair performed by shakatak camera. Input bias current vs time from power turnon time after power turnon min input bias current pa 0 1na 100 10 1 12345 vs 24vdc vs 15vdc vs 5vdc commonmode rejection vs commonmode voltage commonmode voltage v commonmode.
Op270 also dense, but a little better soundstage than opa2604. Just use a pdf reader that ignores the stupid lock drm feature. The bursons are also much more detailed and revealing. The high small signal and power bandwidth provides superior performance in high quality amp, all control circuits, and telephone applications. Furthermore, the noise performance of the 627 is about 50% better than the 24. So i decided to try your discrete opamp andwow, im very impressed. Im very happy with your opamp and it really sounds amazing. That said, burr brown opamps are generally a bit laidback sounding. Pricing and availability on millions of electronic components from digikey electronics. Audiophile replacement for the ne5532 who can handle. Some i ordered from digikey, some from ebay that couldve been digikey samples and some from ebay that arent. Texas instruments opa627 series high speed operational amplifiers. Oct 02, 2005 opa2604 sweet, but veiled sounding opamp. Texas instruments opa627 series high speed operational.
Ad827 high speed, low power dual op amp data sheet rev. I rolled back and forth with opa2228 which i like for being very warm and sweet, opa2107 sounds more natural, faster, with more accurate and better imaging. I always considered the opa2604 to be a cheap opamp. Opa2604ap texas instruments integrated circuits ics. The burson supreme sound op amps deliver a wonderfully deep and rich sound. Input voltage noise spectral density 1k 100 10 1 1 frequency hz v voltage noise nv hz 10 100 1k 10k 100k 1m 10m voltage noise vs source resistance source resistance. Opa24 vs opa2604 vs opa2107 kanedak tweakers asylum. Opa2604ap datasheet, opa2604ap pdf, opa2604ap data sheet, opa2604ap manual, opa2604ap pdf, opa2604ap, datenblatt, electronics opa2604ap, alldatasheet, free, datasheet.
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