AVR-Chat

It can be done, Cat C, but must be done with an inverting amplifier in a 
differential amplifier configuration in order to get the less-than-1 
gain.  This would necessitate either a dual supply with another inverter 
with gain following the differential or a reference offset for the 
differential amp with another inverter with gain following.

It increases the circuit complexity in this instance.  However, 
sometimes it isn't avoidable.  We have a piece of equipment here that 
we've had to do exactly this, kinda, but it's a current converter 
circuit and these are most easily done with an inverter...and with a 
battery supply.  Sooo...

It also requires good operational amplifier design techniques as David 
Kelly states.  Otherwise you will have stability problems that'll come 
back to bite you when and where you don't want them to.


REB



Cat C wrote:

>Why never use gain of less than 1?  Stability?  Can't that be sorted out and still use gain of less than 1?
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>Thanks,
>
>Cat
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