in my application, i am using THS4524 for diff to differential application. OCM voltage used is 1,63. I have configured gain of 4.75 using 100K and 475K. This desing is in production from long time.
recently we have observed that offset voltage at P and N output is not 1.63V. P goes high to 1.7V whenereas N goes low to 1.4V, giving me DC offset of 300mV. This DC offset is independent of whether Inout is connected or not connected or floating. This offset becomes zero when input at the connector is shorted. I am sure about that there is no DC coupling at the input.
what could be the reason for this ? whehter higher values of resistor can cause this DC unbalance at the output?
