Title :
A 0.8V CMOS filter based on a novel low voltage operational transresistance amplifier
Author :
Ravindran, Arun ; Savla, Anup ; Younus, Md Iqbal ; Ismail, Mohammed
Author_Institution :
Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA
Abstract :
Operational transresistance amplifier (OTRA) is suited to low voltage operation since it minimizes stacking of transistors due to the use of shunt-shunt feedback topology. A second order low pass filter with independent tuning of DC gain, cutoff frequency and Q factor was designed based on the Tow-Thomas biquad, using a novel low voltage OTRA in 0.18 μm CMOS technology. The filter operates at a supply of 0.8V, has a 3dB cutoff of 600kHz, VIP3 of 2.85V, input referred spot noise at 1 kHz of 115nV/√Hz and consumes 0.7mW power.
Keywords :
CMOS analogue integrated circuits; Q-factor; biquadratic filters; circuit feedback; low-pass filters; low-power electronics; operational amplifiers; 0.18 micron; 0.7 mW; 0.8 V; 2.85 V; 600 kHz; CMOS; DC gain; OTRA; Q factor; Tow-Thomas biquad; cutoff frequency; input referred spot noise; low voltage operational transresistance amplifier; second order low pass filter; shunt-shunt feedback topology; CMOS technology; Cutoff frequency; Feedback; Low pass filters; Low voltage; Operational amplifiers; Q factor; Stacking; Topology; Tuning;
Conference_Titel :
Circuits and Systems, 2002. MWSCAS-2002. The 2002 45th Midwest Symposium on
Print_ISBN :
0-7803-7523-8
DOI :
10.1109/MWSCAS.2002.1187049
