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ADA4941-1 outputs in-phase... cause?

Question asked by Bonobo on Jan 4, 2017
Latest reply on Jan 12, 2017 by Bonobo


while measuring  the specs of a measurement prtotype, where at the end a
ADA4941 drives an AD7691, I noticed that the outpunts of the differential
amplifier are in phase. I could not detect shorts and measuramnts were taken
with and without load.

My question is now: Does this indicate a broken IC or is it possible to get
OUT_+ = OUT_- from the SE to DM Amplifier, while builidng a driving stage
according to p. 22 of the datasheet?