[sdiy] Happenin' new opamp

[Neil Johnson]

David,

> > If you can cope with single-supply op-amps then the TLC272
> > series is pretty good, with Ibc(typ) around 0.7pA.

> Single-supply would be a bit of a challenge, since the ASR processes both
> positive and negative voltages.

A 7808 and a 7908 should solve that for you (the TLC272 can run up to
16V supply).  Single-supply means the inputs and outputs can go down
to the -Ve rail.
Scale the input voltage to +/-5V, and back up again on the output, and
you're good to go.

Neil
-- 
http://www.njohnson.co.uk