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AD698 Sig Out not changing with LVDT displacment

Question asked by jimbob on Sep 6, 2016
Latest reply on Sep 20, 2016 by jimbob



I've copied Fig 13 from page 8 of the datasheet for single supply operation, the primary excitation is OK 3.5KHz, nice sine wave and secondary is changing amplitude with displacement, but the sig out is stuck at 7V and not changing with displacement at all.


Any ideas why this is not working please?