An on-chip transfer function characterization system for analog built-in testing
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abstract
A compact system for the on-chip transfer function characterization of an analog circuit is presented. It consists of a phase and amplitude detector and a signal generator. A general methodology for the use of this structure in the functional verification of a circuit under test (CUT) is provided. An integrated implementation of the proposed system in CMOS 0.35m technology is described along with circuit-level design considerations. Experimental results of the application of this system in the characterization of a commercial programmable gain amplifier for frequencies up to 160MHz are also presented.