[time-nuts] OP-Amps for 10MHz distribution...?

gary lists at lazygranch.com
Wed Feb 29 06:50:19 UTC 2012

Yes, there will be no set rule. You would need to try both inverting and 
not inverting for each op amp.

On 2/28/2012 10:22 PM, Bruce Griffiths wrote:
> For the OPA653 the noninverting configuration has lower distortion at
> least for 2V pp outputs.
> Bruce
> gary wrote:
>> Just a FYI, some op amps have lower distortion in inverting mode than
>> as a follower. This is not intuitively obvious since a follow has
>> maximum feedback, which would imply the best linearity. However the
>> distortion as a follower is due to the common mode rejection of the op
>> amp. That is the inverter has the front end differential pair at a
>> virtual ground while the follower moves the differential pair with the
>> signal.
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