Title :
Low-power low-voltage class-AB linear OTA for HF filters with a large tuning range
Author :
Galán, J.A. ; Carvajal, R.G. ; Muñoz, F. ; Torralba, A. ; Ramírez-Angulo, J.
Author_Institution :
Dpto. Ingenieria Electronica, Sistemas Informaticos y Automatica, Univ. Huelva, Spain
Abstract :
Based on a multiplier cell, a low-voltage class-AB linear OTA is proposed. The proposed transconductor exhibits a wide transconductance range with 90 MHz bandwidth and low distortion. The transconductor operates at a 2 V supply voltage with only 340 μW of quiescent power consumption. A gm-C biquad filter section has been, built with 10.7 MHz nominal frequency and Q=40. The filter has been laid out using a 0.8 μm CMOS technology.
Keywords :
CMOS analogue integrated circuits; biquadratic filters; circuit tuning; integrated circuit design; low-power electronics; operational amplifiers; radiofrequency filters; wideband amplifiers; 0.8 micron; 10.7 MHz; 2 V; 340 muW; 90 MHz; CMOS technology; HF filters; gm-C biquad filter section; large tuning range; low distortion; low-power low-voltage class-AB linear OTA; multiplier cell; nominal frequency; quiescent power consumption; supply voltage; transconductor; wide transconductance range; CMOS technology; Circuits; Energy consumption; Hafnium; Linearity; Low voltage; MOSFETs; Nonlinear filters; Transconductance; Transconductors;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Conference_Location :
Phoenix-Scottsdale, AZ
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1010910
