Current source circuit with offset compensation in LOG102 input end with OPA335 op amp and the reference voltage source REF3025

Published:2013/2/20 0:38:00 Author:Ecco | Keyword: Current source , offset compensation , LOG102 input end , op amp , reference voltage source | From:SeekIC

This circuit uses a 1GΩ ~ 2.5kΩ potentiometer to match 2.5nA ~ 1mA reference voltage source and generate the reference current, and it uses low offset chopper op amp OPA335 to compensate input offset voltage, constituting the current source circuit with offset compensation.



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