VIDEO RATE D/A CONVERTER WITH SIGMA-DELTA MODULATOR

摘要

A D/A converter (DAC) is described having interpolation means (1) and filter means. Further the D/A converter comprises a noise shaper (3) implemented as a reduced sample rate (RSR) sigma-delta modulator, and controlled by clock means. To further improve the operation of the D/A converter in an advantageous embodiment of the invention the filter means are implemented as polyphase FIR filter means.