DocumentCode
1479251
Title
CMOS current-mode pseudo-exponential function circuit
Author
Vlassis, S.
Volume
37
Issue
8
fYear
2001
fDate
4/12/2001 12:00:00 AM
Firstpage
471
Lastpage
472
Abstract
A current-mode analogue circuit that implements a pseudo-exponential function is proposed. The design of the circuit is based on Taylor´s series approximation, using MOS transistors in the saturation region. The advantage of this circuit is that the output current presents a very low temperature coefficient (TC) and is also immune to the body-effect. Simulation and experimental results show that the circuit offers a maximum output range of /spl sim/30 dB, with an error of less than 1 dB and TC=-233 ppm//spl deg/C.
Keywords
CMOS analogue integrated circuits; current-mode circuits; function approximation; series (mathematics); CMOS; Taylor´s series approximation; analogue circuit; current-mode pseudo-exponential function circuit; maximum output range; output current; saturation region; temperature coefficient;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20010357
Filename
919964
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