PGA202 offset voltage correction circuit

Posted on Mar 28, 2007

As shown for the PGA202 offset voltage correction circuit. PGA202 offset voltage correction circuits for input offset voltage and output offset voltage is corrected. Since ther

PGA202 offset voltage correction circuit
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e are four kinds PGA202 gain, input offset voltage at different gain slightly different, 50k potentiometer for correcting the input offset voltage; output offset voltage using 10k potentiometer calibration. OPA602 op amp voltage follower composition, low resistance output to 4 feet. Adjustment: at the output connected to a voltmeter 12 feet, 7-8 feet short PGA202 make VIN 0, respectively, and repeatedly adjust 50k 10k potentiometer, so that the output voltage meter to zero indication.

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