AnsweredAssumed Answered

gain problem

Question asked by vsp on Jan 30, 2012
Latest reply on Jan 30, 2012 by Gustavo.Castro

With AD8236 in single supply mode (GND to 3.3V)  and Ref pin tied to GND,  we did not succeed to amplifiy a signal that can varie from 0 to 200mV. The signal is set on pin +IN and -IN is also tied to GND.

In fact if no gain resistor is set the output seems correct but as soon as we set a resistor to achieve a gain of 10 or higher the output give a lower voltage than expected. In this configuration it seems that the output limit is 2V !