Circuits are used to sense and compensate or mitigate the imbalance errors, hence restoring the intended benefits of differential processing. In particular, the impedance mismatch between the positive and negative branches of a balanced system is sensed by digitizing an error voltage developed by injecting suitable common mode stimuli. The mismatch is then trimmed out by introducing and properly setting up a digitally controlled impedance that counters the original impedance mismatch and hence rebalances the signal path on-situ and prior to exercising the signal processing chain.