Title :
A low-voltage body-driven CMOS transconductor
Author :
Zhang, Xuguang ; El-Masry, Ezz I.
Author_Institution :
Dept. of Electr. & Comput. Eng., Dalhousie Univ., Halifax, NS, Canada
Abstract :
A novel low-voltage triode-mode CMOS transconductor is presented. Enhanced linearity and tuning range are achieved by implementing body-driven technique and gain-enhancement scheme. Simulation results using 0.18 μm N-well CMOS technology confirm the superior performance of this transconductor. With 1.5 V single power supply, the transconductor is linearly tunable over one decade. For differential input signal with peak amplitude up to 0.4 V, the THD is less than -50 dB for the entire transconductance tuning range. The proposed highly linear transconductor is suitable for realizing continuous-time filters with reduced power supply.
Keywords :
CMOS analogue integrated circuits; circuit tuning; continuous time filters; harmonic distortion; 0.18 micron; 1.5 V; THD; body-driven CMOS transconductor; body-driven technique; continuous-time filters; differential input signal; gain-enhancement scheme; linearity; peak amplitude; transconductance tuning range; tuning range; CMOS technology; Circuit optimization; Filters; Linearity; Low voltage; MOSFETs; Power supplies; Threshold voltage; Transconductors; Transistors;
Conference_Titel :
Circuits and Systems, 2002. MWSCAS-2002. The 2002 45th Midwest Symposium on
Print_ISBN :
0-7803-7523-8
DOI :
10.1109/MWSCAS.2002.1187223
