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ADR444BRZ output voltage decreased with increasing temperature

Question asked by gongjiulu on Nov 1, 2016
Latest reply on Nov 17, 2016 by gongjiulu

Hi, we got a problem when using ADR444BRZ, the output voltage decreased with increasing temperature. Attached pleased find the circuit diagram we used. It has worked well for 4 years, but now we find the output voltage decreased with increasing temperature, and will be 4.03v when the temperature is 40 Centigrade. Actually, we have used 3 ADR444BRZ on one circuit board, and only one failed.

 

Can anyone tell me the possible reasons?

 

Thanks!

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