DocumentCode
2833416
Title
A 0.5 μA offset-free current comparator for high precision current-mode signal processing
Author
Wu, Chung-Yu ; Chen, Chih-Cheng ; Tsai, Ming-Kai ; Cho, Chih-Che
Author_Institution
Nat. Chiao Tung Univ., Hsin-Chu, Taiwan
fYear
1991
fDate
11-14 Jun 1991
Firstpage
1829
Abstract
A current-domain auto-zero technique and a fully differential current amplifier are developed to realize a offset-free current comparator. Simulation results show that the current comparator can receive a 0.5 μA input current in 1.3 μs even if the current amplifiers and the 1-V converter have offset currents of 20 μA. Its push-pull structure overcomes the slew-rate limiting problem and the fully differential configuration offers a high immunity to clock feedthrough noise and power supply variations
Keywords
comparators (circuits); differential amplifiers; 0.5 muA; current comparator; current-domain auto-zero technique; current-mode signal processing; fully differential configuration; high precision; offset-free; push-pull structure; Analog-digital conversion; Circuit simulation; Differential amplifiers; Digital audio players; Feedback circuits; Signal design; Signal processing; Signal resolution; Switches; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 1991., IEEE International Sympoisum on
Print_ISBN
0-7803-0050-5
Type
conf
DOI
10.1109/ISCAS.1991.176761
Filename
176761
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