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AD797 and dual differential filter topology

Question asked by gvelim on Feb 5, 2012
Latest reply on Feb 21, 2012 by harryh



I am using the AD797 in the attached filter which located at the output of a DAC running in differential mode. Measuring the output of the filter with oscilloscope does not indicate any oscillations however the AD797 runs very hot, to a point that you cannot hold your finger on it.


How can I confirm whether the opamp is stable and if not,  how correction should be made to the filter to make AD797 run stable ?