A comparison of noise-shaping clock generators for switched-capacitor filters

A programmable clock generator that uses noise shaping ran generate a wide range of sampling frequencies with fine resolution for switched-capacitor f ilters (SCF's). In this brief, different noise-shaping transfer functions f or such a clock generator are compared through simulation and measurement o f two SCF's driven by the clock generator. A tone detector that uses a band pass SCF driven by the programmable sampling-clock generator is also descri bed.