Strays-insensitive active switched-capacitor biquad

5 June 1980

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 16 (12) , 480-481
https://doi.org/10.1049/el:19800337

Abstract

A general active switched-capacitor biquad is introduced. The circuit is immune to the various parasitic capacitances and is based on the two-integrator-loop topology. It implements the noninverting forward-Euler and the inverting backward-Euler discrete integrators. The circuit is the most general of its kind and all published biquads and many others can be generated from it.

Keywords

FILTER
TRANSFER FUNCTIONS
TWO INTEGRATOR LOOP TECHNOLOGY
PARASITIC CAPACITANCES
NONINVERTING FORWARD EULER INTEGRATOR
INVERTING BACKWARD EULER DISCRETE INTEGRATOR
SWITCHED CAPACITOR ACTIVE BIQUAD

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