Texas instruments opa1611 series audio amplifiers are available at mouser electronics. There is simply not enough output volume for the grace. Ad797a datasheet ultralow distortion ultralow noise op amp. Sokrates mk ii, aka highend preampi seite 2 diyhififorum. It is already pretty close to maxed out on the stock rme pad as it is. Furthermore, the ad797 s excellent slew rate of 20 vs. The bipolar ad797 seems to be out on its own here, but it is a specialized and expensive part. I didnt study the m3 amp but if its just the matter to push the opamp to class a, it should be no problem to do, the opa1611 can deliver over 40ma vs. Not even opa827, let along ad797, ada4898, lt11291028, opa1611 etc. Adis ad797 is a low distortion and low noise operation amplifier. Opa1611 data sheet, product information and support.
I was really excited about these sorts of op amps when i saw them for the first time, then i saw the input bias current and input current noise. The lt1028 is not suitable for audio use for reasons described. Ad797 ultralow distortion, ultralow noise op amp data. Railtorail output function provides wide dynamic range, is from ground to power supply level. Having said that though, in all honesty i cant really articulate why, but there is indeed something particularly nice soundin. Amb laboratories diy audio forums view topic opa627 vs.
These devices are particularly suitable for implementing buffer registers, inputoutput io ports, bidirectional bus drivers, and working registers. Tubey, better late than never i just replaced all ne5532 amps in benchmark dac1 with opa1612 and play it so far for few hours. Opa1612 pdf download a datasheet or document on tis opa1612 operational amplifier op amp, from the precision amplifier collection of analog and digital product folders. Texas instruments opa1611 series audio amplifiers mouser. The ad797 is a very low noise, low distortion operational amplifier ideal for use as a preamplifier. This mono opa 1611 replaces advantageously any aop ne5534, opa627, opa4 producing a precise and melodic sound without aggressiveness. I ended up settling for the lt1792 a low noise fet op amp. Njm2741 is a low noise railtorail output single operational amplifier.
The opa687 is a wideband op amp made by burr brown. What are the really good opamps for audio, that dont cost stupid money and are available in dips not just smd. Furthermore, the ad797s excellent slew rate of 20 vs and. Opa1611 datasheet, opa1611 datasheets, opa1611 pdf, opa1611 circuit. Highperformance bipolarinput audio operational amplifiers, opa1611 datasheet, opa1611 circuit, opa1611 data sheet. Description the 74lvc374a provides eight edgetriggered dtype flipflops featuring 3state outputs designed specifically for driving highly capacitive or relatively lowimpedance loads.
Opa164x soundplus highperformance, jfetinput audio. I truly love my m3 and cant imagine it getting any better, therefore im trying to improve it. Opa1611 datasheet, opa1611 pdf, opa1611 data sheet, opa1611 manual, opa1611 pdf, opa1611, datenblatt, electronics opa1611, alldatasheet, free, datasheet, datasheets. Im very happy with your opamp and it really sounds amazing. The only difference between the ad8620a vs ad8620b is the voltage drift per changing temperature 0. Opa1611 pdf, opa1611 description, opa1611 datasheets. Is there any superiority in terms of producing bass sounds. A schiit magni 3 and jds labs atom were analyzed during the testing by an. Conventional wisdom says that the high gain setting on an amplifier adds noise as there is no free lunch.
I wasnt complaining about the opa1611, just as an example of bipolar npn input opamps, like the opa1622, or ad797, ne5532, opa1692. Opa1611 datasheet, pinout,application circuits high. Amb laboratories diy audio forums view topic ad8597. The opa1611 has almost as low distortion, but the distortion vs. Ti highperformance bipolarinput audio operational amplifiers,alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated. Bruce hofer designing for ultralow thd n in analog circuits free download as powerpoint presentation.
Opa 1611 opa1612 any impressions audiogon discussion forum. Furthermore, the ad797s excellent slew rate of 20 vs. Key features such as a 50 ma output current drive and the specified power supply voltage range of 5 v to 15 v make the ad797 an excellent general purpose. Already diggin on the jrc4558d and the burr brown as well as the tl072, but i need a 4th dual opamp. What are the good general purpose audio opamps these days. The op amp with low harmonic distortion of 120 db which is perfect for a wide dynamic range necessary for precision applications. Precision linear audio amplifiers selection guide pdf, 4. Data sheet acquired from harris semiconductor schs031b. The cd4026b and cd4033bseries types are supplied in 16lead dualinline plastic packages e suffix, 16lead smalloutline packages nsr suffix, and 16lead thin shrink smalloutline. Searching for a opa627 opamp i found burson audio web page.
Key features such as a 50 ma output current drive and the specified power supply voltage range of 5 v to 15 v make the ad797 an excellent generalpurpose. Nested feedback composite amplifier opamp requirements. The opa1611 and opa1612 offer railtorail output swing to within 600mv with a. Gday all, with all my general messing around with different op amps in simple phono stages of late, i think that i do regard the opa24 as being the bestnicest sounding. Ultralow distortion, ultralow noise op amp data sheet rev. Opa164x soundplus highperformance, jfetinput audio operational amplifiers 1 1 features 1 superior sound quality true jfet input operational amplifier with low input bias current low noise. Ti, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. Opa161x soundplus highperformance, bipolarinput audio. Unless the blackgates open up with alot more power as they burn in, ad797s are a no no with the grace 901. Hi guys, i am working on a preamp project, just wanna know which ic is better when it comes to audiosound performance. K page 6 of 19 typical performance characteristics 00846004 20 0 0 20 15 5 5 10 10 15 supply voltage v figure 3. Bruce hofer designing for ultralow thd n in analog.
It is suitable for audio section of portable sets, pcs and any. Ad797a ultralow distortion ultralow noise op amp features low noise 0. Ad797 ultralow distortion, ultralow noise op amp om3bc. The opa687 is configured as a voltage feedback amplifier with a gain.
The analog ad797 has equivalently low distortion, but its very expensive and slightly cranky to stabilize. This increase is very gentle, but its in the upper mid frequencies, and my guess is that its caused by the 3. Ad797anz general purpose amplifier 1 circuit 8pdip from analog devices inc pricing and availability on millions of electronic components from digikey electronics. Opa1611 datasheetpdf 3 page texas instruments html. Im interested in what people think,especially if youve used them in your own circuits. Pdf opa1611, opa1612 sbos450c opa161x opa1611 opa1611 sloa089. High gain versus low gain settings on headphone amplifiers. Definitely for some applications they could be really good, however for the thing i was doing at the time they werent so great. Single supply, railtorail output single operational. Arduino based ldr volume and source selection controller. I think the tl071 is really really good, but it sucks quite a bit of juice. As we all know opa2211 has by far the best spec not sure about ad797 but still.
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