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A systematic approach to the design of stray‐insensitive sc circuits from active‐ RL or RLC prototypes
Author(s) -
Rathore T. S.,
Bhattacharyya B. B.
Publication year - 1987
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.4490150405
Subject(s) - digital biquad filter , electronic circuit , rlc circuit , active networking , active filter , electronic engineering , network analysis , capacitor , switched capacitor , computer science , voltage , engineering , electrical engineering , telecommunications
A systematic approach to the design of stray‐insensitive switched‐capacitor (SC) circuits from active‐ R C or RLC prototypes employing a parasitic insensitive SC differential voltage‐controlled current‐source as a basic building block is attempted. Procedures for transforming active‐ RC and RLC circuits into stray‐insensitive SC circuits are formulated and illustrated with typical examples. Restrictions on the pole‐frequency and pole‐ Q of the SC biquad are derived so that it closely emulates the frequency response of the original active‐ RC biquad. the SC biquad and the ladder filter derived by the proposed procedures were simulated with discrete components and tested in the laboratory. Test results agree closely with the theoretical predictions.