Analog-to-pulse density converter

摘要: The analog-to-pulse density converter of U.S. Pat. No. 3,955,191 is modified to provide high stability gain with temperature compensation, auto-centering and defined d.c. offset reduce noise at low signal levels. circuit has reduced power dissipation. modulator a stabilized current switching feeding an RC network which terminated by two D-type flip flops clocked frequency pulse train. Negative feedback from both the causes generate modulated (PDM) output related given input signal.