At 10:38 AM 2/22/2012, Electron wrote:

>Hello,
>when you have an Op Amp based differential circuit, like this:
>
>Emacs!

I didn't see your attachment, but in general, higher value resistors=20
equals higher noise.

Unless your signal source has a high output impedance, I would tend=20
to use lower value resistors.  Less noise, less chance of stray noise=20
pickup, lower offset voltage if you were using a bipolar op-amp=20
rather than CMOS.

That's a generalization - YMMV.

dwayne

--=20
Dwayne Reid   <dwayner@planet.eon.net>
Trinity Electronics Systems Ltd    Edmonton, AB, CANADA
(780) 489-3199 voice          (780) 487-6397 fax
www.trinity-electronics.com
Custom Electronics Design and Manufacturing

--=20
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