replacement for OPA627

[Ryssen]

Is there a replacement (cheaper) for OPA627,to be used as an
outputstage for a DAC.

 

[KevinLee]

You might want to look at the AD8610/AD8620.

Some like LM6172 or AD826, they are dual package though.

There is a new AD piece called AD8065, I have not heard anything at all about it.

I like both OPA627 and AD8610/20.

There is nothing better than trying a few different types and making your own decision.

Good luck

KevinLee

 

[tool49]

I second KevinLee's choice of AD8610/AD8620. I would not suggest to go much lower in price range as you might find that the quality difference by the few extra dollars is well worth it.

Hope this helps!
Sébastien

 

[peranders]

OPA627 isn't the only opamp around that fits. In what way are you going to use the opamp, filter, I/V converter, buffer?

AD8610 is good (better) but slightly noisier and can take max +- 13 volts, only in SMD SO08. Check for amps with noise less than 6 nV/sqr Hz and sr > 10 V/us

 

[Ryssen]

There are 2 OPA627 in the shematic, the first one is for I/V converter,then there´s a filter then another OPA627 as buffert.

 

[PMA]

How about LM741?

 

[Ryssen]

Yes, the LM741.I guess you are using it?

 

[millwood]

How about LM741?

or my favorite: lm324,

 

[mlloyd1]

you guys are missing out on audio nirvana: the LM709
very rare now, nobody wants to part with theirs



Seriously, I've been seeing some folks very interested in the LT1363 (I think that's the right number). I haven't tried it myself yet, but I have a buddy that REALLY like it IN SOME APPLICATIONS. NOTE: it is not a JFET input device; sometimes that matters.

mlloyd1

 

[PMA]

you guys are missing out on audio nirvana: the LM709
very rare now, nobody wants to part with theirs



mlloyd1

Very good idea, indeed. But be careful - this part needs sophisticated frequency compensation

 

[analog_sa]

I seriously prefer the AD8610 to both 627/637 in a RIAA application. It sounds much more dynamic and alive to my ears. Plus it has better DC performance which saves the o/p cap.

No immediate comparison to a 709 though, can't get free samples

 

[Alfetta87]

Is there a replacement (cheaper) for OPA627,to be used as an
outputstage for a DAC.

Try the AD825 which is a single OpAmp. I like it a lot. You would need a SO- to 8 DIP adapter.
See here: http://www.brndog.com/priclist.html to get such adpters.

I also recommend the 604, which is cheap, and not too bad.

- dan

 

[ppl]

hears you chance then still available from http://www.national.com/pf/LM/LM709.html just time traval to 1999
arrow has about 500 of them as of Dec 2003 so yoy really dont have to time traval.