>> Looks to me like if you have a design that must be low power, the  
>> best bet is to avoid having the uncommited op amp in the first place.

I thought the general conclusion was to configure a voltage follower  
whose input was well within the range allowed for that particular op- 
amp.  For most modern op-amps, doesn't that mean you can parallel the  
input with any of the USED amps in your
package ?  Their inputs are already supposed to stay within allowed  
limits.  There may be circuits that are particularly sensitive to  
loading at certain points, but there are almost certainly other  
points that are pretty robust, and the average modern opamp input is  
not much of a load...

BillW

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