Sine-wave signal characterization using square-wave and ΣΔ-modulation: Application to mixed-signal BIST

This paper presents a method for extracting, in the digital domain, the main characteristic parameters of an analog sine-wave signal. It is based on a double-modulation, square-wave and sigma-delta, together with a simple Digital Processing Algorithm. It leads to an efficient and robust approach very suitable for BIST applications. In this line, some considerations for on-chip implementation are addressed together with simulation results that validate the feasibility of the proposed approach. © 2005 Springer Science + Business Media, Inc.Peer Reviewe