HIGH PRECISION, HIGH-SPEED SIGNAL CAPTURE

摘要

A topology for converting an analog input signal at an input port into a corresponding digital output signal at an output port includes a plurality of substantially identical ADC stages. Each ADC stage includes a multi-bit sigma-delta loop having an analog input coupled to the input port and a digital output coupled to a combining circuit. The combining circuit adds the outputs of the ADC stages to generate the digital output signal.