Reconfiguration schemes of SC biquad filters for oscillation based test
U. Kač, F. Novak
Information technology and control, 2013, 42(1): 38-47
Transformation rules for oscillation based test for different types of switched-capacitor (SC) biquad filter stages based on Fleischer-Laker biquad SC structure are proposed. In our earlier work, a solution for all-pass SC biquads has been reported. In this paper we generalize the approach to other classes of SC filter biquads. Theoretical background of the proposed approach is described and a set of practical design-for-test rules for each of the addressed SC structure is provided. Proposed oscillation based test structures can be included into a built-in self-test design with minimum hardware overhead.
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