Patent ID: 6252567
Filing Date: 2001-06-26
Classification: G09G,H03M

Abstract:
A multiple-output digital to analog converter for converting digital input data into a plurality of analog output voltages across associated loads comprising:a timing generator for generating time periods in dependence on the digital input data,means for supplying a waveform signal (Wf1),means for coupling the loads, each during an associated one of the time periods (Ti1), to the waveform signal to obtain the plurality of analog output voltages at ends of the associated time periods (Ti1),at least one dummy load associated to a corresponding one of the loads,means for coupling the at least one dummy load to the waveform signal when the means for coupling decouples the corresponding one of the loads from the waveform signal, andmeans for generating a dummy voltage across the at least one dummy load, the dummy voltage being substantially equal to the analog output voltage across the corresponding one of the loads at an instant when the means for coupling decouples the corresponding one of the loads.