OP-Amp Drift Compensation.

[aandy]

opamp drift temperature compensation

Hi

What is the technique for OP-AMP Drift Compenstation over Temperature,Time,Humidity etc. It is mainly required for Precision Application like Digital Scales etc.

Thanks

 

[rfsystem]

op amp temperature compensation

The drift compensation techniques are developed for bipolar inputs. If there is a device mismatch it creates an input related offset. The temperatur drift is exact proportional to the initial offset. So at the output of the input stage a resistor network is trimmed to give exact zero output for zero input. That trimming reduce both, offset and offset drift!

 

[aandy]

op amp drift

Hi

Any specific url which describes the above in Details ?

Cheers

 

[rfsystem]

op amp drift compaensation

I think some IEEE Solid-State end of 60s and application notes from Analog Devices. The techniques are easy to understand for me so it take me more effort to browse my old magazines or having local stored referencies.

Sorry!

 

[aandy]

op amp drifte

Yeap the above is quite informative for me so I was wondering if any url site for the above ...

Thanks and regards