Sigma-delta analog-digital converter for audio systems has an integrator, a quantizer for analog-digital conversion and a dither signal generator.

摘要

An analog-digital quantizer converts an incoming analog signal. A dither signal generator (4) generates a digital dither signal. Floor space required and power consumption for a circuit for processing the dither signal can be reduced by providing a digital logic unit (3) linked to the output of several comparators (2a-2n) with different switching thresholds (Pegel 1-n) that convert an analog signal from an integrator into a digital value.