[sdiy] Non-inverting output buffer

[Antti Huovilainen]

On Tue, 27 Apr 2010, ASSI wrote:

> On Tuesday 27 April 2010, Andre Majorel wrote:
>> how do you choose R1 ?
>
> If you use it at all, it should match impedance seen at he input -
> this gives the best possible offset drift.

R1 must be used if C or R2 are. Otherwise you simply short circuit the 
capacitive load to the negative input terminal (and get oscillation and 
other fun things).

Antti

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