This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

REF3112 sometimes improper Vout

Other Parts Discussed in Thread: REF3112

Hello.

A couple of days ago I found in my device that Vout from REF3112 sometimes was 1.36V instead of 1.25V. Conditions causing this behaviour was not clear and happen not often.

I determined that too high value of input filter resistor (R=1k, C=10u) and output capacitor (1u) are to blame for this. Changing R to 220 and Cout to 470n seemed to resolve the problem.

But today the problem reappeared (in another instance of this device). I think of reducing further the resistance, but how much?

Are there any constrains on output resistance of source supplying this reference? In example circuits there is no filtering, but I would like to use some.

Best regards.