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Originally Posted by bigben2k
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Simpler than that Ben. I already have a Voltage reference, (MAX6241) what I need is a regulator circuit for the power supplies. I want this to be very stable, and I was wondering if it was possible to feed the voltage reference to the V adj pin of the 3TR in some manner where it was still regulating properly but was locked to the reference voltage. i.e if the reference drifts, so does the rest of the circuits power supplies, (to amps, sensors and ADC) thus cancelling any error this would generate. I realise the ADC will do it's thing relative to its ref V but I want to reduce the uncertainty.
Is this necessary? The voltage followers would (should) not be affected by Vcc fluctuations either but I am integrating a shunt with an amp for measuring current which might be.