A comprehensive procedure for the design of cascaded switched-capacitor filters

A complete set of design equations is given for first-order and biquadratic transfer functions in the
z
-domain. These equations are derived directly from the first- and second-order transfer functions in the
s
-domain. Consequently no new approximation for a prewarped set of cutoff frequencies is required. A step-by-step design procedure for SC filters follows. The sampling-conditions for input and output signals and for cascading are also discussed.