Title :
Signal-dependent clock-feedthrough cancellation in switched-current circuits
Author :
Fiez, Terri S. ; Allstot, David J. ; Liang, Guojin ; Lao, Paul
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Washington State Univ., Pullman, WA, USA
Abstract :
The authors have developed three schemes for cancelling the signal-dependent clock-feedthrough in switched-current circuits. Two of the schemes are based on replicating the current track-and-hold to produce an output current with less than 0.03% THD for a signal to bias current ratio of 0.5 and current mirror sizes of W/L=20 μm1/2μm. In the third scheme, by adapting the clock signal to the signal level, a constant clock-feedthrough is produced. All of the cancellation schemes presented have been integrated in a 2 μm CMOS process
Keywords :
CMOS integrated circuits; linear integrated circuits; network analysis; switched networks; 2 micron; CMOS process; clock-feedthrough cancellation; current mirror; current track/hold circuit; signal-dependent clock-feedthrough; switched-current circuits; CMOS technology; Clocks; Coupling circuits; Equivalent circuits; MOSFETs; Mirrors; Power supplies; Switches; Switching circuits; Threshold voltage;
Conference_Titel :
Circuits and Systems, 1991. Conference Proceedings, China., 1991 International Conference on
Conference_Location :
Shenzhen
DOI :
10.1109/CICCAS.1991.184478
