Title :
Worst case estimate of mismatch induced distortion in complementary CMOS current mirrors
Author_Institution :
Dept. of Inf. Technol., Tech. Univ., Lyngby, Denmark
fDate :
8/20/1998 12:00:00 AM
Abstract :
Mismatching between the MOS transistors in a current mirror causes harmonic distortion. In a complementary class AB current mirror, mismatching of threshold voltages, geometries and transconductance parameters causes a distortion which cannot be eliminated by circuit techniques but which can be reduced by careful device matching. In this Letter, the author presents a worst case estimate of the harmonic distortion introduced by device mismatch
Keywords :
CMOS analogue integrated circuits; amplifiers; harmonic distortion; MOS transistor; complementary CMOS class AB current mirror; device mismatch; harmonic distortion; threshold voltage; transconductance;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19981150