[sdiy] [Slightly OT] Op-amp headroom in synth & audio applications

[Roman Sowa]

But there are still all the older and cheaper opamps (and a few new ones 
too), running off 36V and more supply. This is why +/-15V was chosen 
decades ago, to make sure at least +20dBm signal would not clip for sure 
with opamp technology known back then.
It's difficult to find rail to rail opamp with 36V supply range, this is 
sad true, but with +/-15V rails it's not really necessary to have R-R in 
typical audio circuit.

Roman

W dniu 2015-03-11 o 21:01, Ingo Debus pisze:
>
> Am 10.03.2015 um 19:43 schrieb Donald Tillman:
>
>> 2. Why constrain the choice of opamp?
>
> Running a system at +/-15 V supply put a quite heavy constraint on
> opamp choice these days. Many of the popular cheap CMAOS opamps are
> out.
>
> Ingo _______________________________________________ Synth-diy
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