On 11/20/06, DJ Delorie <dj@xxxxxxxxxxx> wrote:
> If I have an op-amp left over unused in a package, what is the
> recommended way of tying its inputs to avoid noise / power consumption?
The only advice I've ever seen is to tie "-" to OUT (
i.e. voltage
follower) then tie "+" to some reference voltage. You want to avoid
changes in the output.
This is better than the earlier suggestion of tying the inputs to the +/- rails. If the op-amp input has clamp diodes, "pulling" them apart by more than ~ .7v can cause large currents to flow and may damage the part. DJ's idea is a better suggestion. Using a reference voltage near 0v would probably minimize power consumption.
Joe T
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