Bipolar op amp retrofit with JFET preamp?

[Antti Huovilainen]

On Thu, 16 Dec 1999, Jim Patchell wrote:

>     It would be a lot easier to replace the little bugger (LM324) with a
> TL084, or TL074, etc.  Now, if you are using the LM324 in a single supply
> application, you have to be careful.  The common mode input range of the
> LM324 includes the negative (pin 11) supply rail.  This means that the

You could use a cmos op-amp that swings to negative rail (TLC272 comes
to mind) if your total supply is < 18V.

Antti

"I'm just gonna go home, lie down and listen to country music.
 The music of pain" - Xander