Title :
A 1.5 V CMOS VGA based on pseudo-differential structures
Author :
Green, Michael M. ; Joshi, Sridevi
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Irvine, CA, USA
Abstract :
A CMOS variable-gain amplifier that works down to VDD=1.5 V is described. The gain characteristic is arranged to be a nearly exponential function of control voltage by a novel circuit topology that utilizes triode-biased transistors in pseudo-differential configurations. This circuit is designed using a 0.35 μm CMOS process and operates at a 3-dB frequency of 21 MHz with a maximum power consumption of 24.8 mW
Keywords :
CMOS analogue integrated circuits; circuit tuning; differential amplifiers; harmonic distortion; low-power electronics; 0.35 micron; 1.5 V; 21 MHz; 24.8 mW; CMOS; VGA; circuit topology; control voltage; gain characteristic; nearly exponential function; power consumption; pseudo-differential structures; triode-biased transistors; variable-gain amplifier; CMOS process; Circuit optimization; Circuit topology; Electric variables control; Energy consumption; Equations; Gain; Linearity; Operational amplifiers; Voltage control;
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva
Print_ISBN :
0-7803-5482-6
DOI :
10.1109/ISCAS.2000.858788
