Re: 0.1 Volts output voltage regulator

On May 14, 11:13 am, john <conphil...@xxxxxxxxxxx> wrote:
Hi,

I am looking for a +/- 0.1 volts output voltage regulator. I have
+/- 5 volts input. Any advice!

Thanks
John

You didn't mention what sort of accuracy and regulation you need, nor
what the load current is (static and dynamic). If you use a linear
regulator, the efficiency will be awful: 100%*0.1/5 = 2%, maximum.
But if your load current is low, that may not be an issue. In fact,
if the load current is low, just use a dual op amp, one side connected
as a unity gain follower and the other as a unity gain inverter,
driven from the follower output. You may be able to do OK with just a
resistive divider from your 5V to generate the 0.1V to put into the
follower. For higher load current, consider an LT3080 for the
positive side. If what you want is really a voltage reference, use a
precision 1.24V reference, or the like, and divide that down and
buffer it with a low-drift (and perhaps low offset) op amp follower.

Cheers,
Tom
.

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