Rapid multiplexing analog to digital converter

摘要

A multiplexed signal processor is described as having an input circuit for receiving multiple input signals. A modulator processes a selected input signal to produce a representative digital output. The modulator includes an integrator that integrates the difference between the selected input signal and a feedback signal representative of the digital output. A signal control circuit selects in turn by time division multiplexing each input signal for a processing period as the selected input signal, and stores the digital output and the integrator state at the end of each processing period. After an initial processing period for each input signal, each processing period begins based on the digital output and the integrator state from the end of the previous processing period for that input signal.