Title :
1.2-V fully differential OTA-C lowpass filter based on bulk-driven MOS transistors
Author :
Carrillo, J.M. ; Domínguez, M.A. ; Duque-Carrillo, J.F. ; Torelli, G.
Author_Institution :
Dept. of Electr., Electron. & Control Eng., Univ. of Extremadura, Badajoz, Spain
Abstract :
An OTA-C filter implementation suited to low-voltage operation is presented. An operational transconductance amplifier (OTA) based on a bulk-driven input stage with enhanced DC gain and bandwidth was designed and included in a 1.2-V tunable fully differential second-order OTA-C lowpass filter. Experimental results, obtained in standard 0.35-μm CMOS technology, showed a dynamic range around 70 dB with a total power consumption of 382 μW for a filter cutoff frequency of 3 MHz.
Keywords :
CMOS analogue integrated circuits; MOSFET; low-pass filters; operational amplifiers; CMOS technology; bulk-driven MOS transistor; bulk-driven input stage; frequency 3 MHz; fully differential OTA-C lowpass filter; low-voltage operation; operational transconductance amplifier; power 382 muW; size 0.35 mum; voltage 1.2 V; CMOS integrated circuits; CMOS technology; Capacitors; Logic gates; Low pass filters; Transconductance; Transistors; OTA-C continuous-time filters; bulk-driven MOS transistors; low voltage; operational transconductance amplifiers;
Conference_Titel :
Circuit Theory and Design (ECCTD), 2011 20th European Conference on
Conference_Location :
Linkoping
Print_ISBN :
978-1-4577-0617-2
Electronic_ISBN :
978-1-4577-0616-5
DOI :
10.1109/ECCTD.2011.6043311
