[sdiy] buffer opamp configuration [was: 1/8th inch questions]

[Grant Richter]

>> 
>> Which is why you see a 5 pf cap across every feedback resistor in the LM318
>> data sheet.
> 
> Aah, now this is a useful datasheet .. it has exactly the circuit I'm trying
> to work out .. a S&H cap with unity gain non-inverting opamp.  It has a 10pF
> cap and a 5K resistor in parallel as the feedback loop.  Split the 5K resistor
> into a 4K + 1K and you have a current limited output point.
> 

Which is only needed for the 30 Mhz bandwidth of the LM318. Believe me, a
TL074 will oscillate in the RF range. But it doesn't LIKE to, which an LM318
does.