DocumentCode
3083190
Title
Low-power design of low-voltage current-mode integrators for continuous-time ΣΔ modulators
Author
Aboushady, Hassan ; Louerat, Marie-Minerve
Author_Institution
Paris VI Univ., France
Volume
1
fYear
2001
fDate
6-9 May 2001
Firstpage
276
Abstract
In this paper, we present a method to design low-power low-voltage current-mirror based integrators for continuous-time ΣΔ modulators. It is shown that, by proper biasing of the mirror transistors, very high modulation index can be achieved at low-voltage supply. Careful analysis of the current-mode integrator shows that there exists an optimum supply voltage for minimum power consumption. Simulation results show that proper choice of the supply voltage can reduce the power consumption of the integrator by 40%
Keywords
current mirrors; current-mode circuits; integrating circuits; low-power electronics; sigma-delta modulation; biasing; continuous-time sigma-delta modulators; current-mirror based integrators; low-power design; low-voltage current-mode integrators; mirror transistors; modulation index; power consumption; Circuit simulation; Current mode circuits; Delta-sigma modulation; Design methodology; Energy consumption; Equations; MOSFETs; Mirrors; Switching circuits; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location
Sydney, NSW
Print_ISBN
0-7803-6685-9
Type
conf
DOI
10.1109/ISCAS.2001.921846
Filename
921846
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