“…The HBIST concept 26 includes an onchip TSG that converts digital test patterns to a test stimulus, and is realised by the reconfiguration of cells already present to perform the digital BIST. Other concepts suitable for mixed signal circuits where the digital kernel is surrounded with analogue sub-circuits on the input and output, are the MADBIST concept for Σ∆ converters 27,28,29 and the BIST for the converters on a single-chip CODEC 30 . The OBIST technique 31 , suitable for both functional and defect oriented testing, is based on the oscillation test methodology.…”