offset voltage about amplifier

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liuyonggen_1

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Could you tell me the value of offset voltage about amplifier without auto-zero techniques?
 

there is in your process match report
 

technology dependant... say 5mV for CMOS...
 

pixel said:
technology dependant... say 5mV for CMOS...
Click to expand...


Thanks for your help!
As I know, the offest voltage for bipolar is less than that of CMOS, if 5mv for CMOS, what value for bipolar?
 

Normally Op.Amp. offset voltage contains two parts:
(1) random offset
Vosr=△Vt + 0.5*(Vg-Vt)*(△R/R + △K/K)
(2) systematic offset
smaller than random offset
 

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