Previous work has shown that it is feasible to implement a fully digital test evaluation function to realise partial selftest on an automatic gain control circuit (AGC). This paper extends the technique to INL, DNL, offset & gain error testing of analogue to digital converters (ADC's). It also shows how the same function can be used to test an AGC / ADC pair. An extension to full self-test is a...

A general boundedness result is given for the feedback interconnection of two nonlinear stable systems. Using the same input–output approach as in the standard small-gain theorem, the sufficient condition given here relaxes the finite-gain stability assumption and does not require a boundedness result for all possible bounded exogenous inputs. This condition has a simple graphical interpretatio...