[sdiy] Current sink/source specs LM336 vs. LM385

[Paul Perry]

Ideally, the VRef diode shouldn't have a varying current.
The op amp input impedance is very high, and won't
vary as the current is taken from the buffer.

So you don't have to think about it at all.

paul perry Melbourne Australia


----- Original Message ----- 
From: "Justin Owen" > I'm trying to work out if there's a better VRef/Buffer 
combo between the LM336 2.5 vs. LM385 2.5 VRef and the TL072 vs LT1013 
opamps as buffer.
>
> Part of that is working out how much current the two combinations can 
> source/sink.
>
> I think both the TL072 and LT101 can sink/source between 20 and 25mA but I 
> can't work out what the equivalent values are for the VRefs.
>
> A VReg data sheet would generally give an 'Output Current' - but it 
> doesn't seem like VRef sheets do.
>
> Any clues?
>
> Thanks,
>
> - J
>
>
>
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>