Title :
A compact subthreshold CMOS 2nd-order gm-C lowpass filter
Author :
Sawigun, Chutham ; Pawarangkoon, Prajuab
Author_Institution :
Dept. of Electron. Eng., Mahanakorn Univ. of Technol., Bangkok, Thailand
Abstract :
This paper presents a compact transistorized lowpass filter circuit that employs global feedback to suppress the circuit´s nonlinearity in the filter passband. The proposed circuit combines only 4 subthreshold-biased transistors in the filter core and 3 branches of current consumption. The proposed filter can be operated from a 1-V single supply. Circuit simulations using Cadence for 0.35-μm CMOS technology parameters are given. Comparison with relevant designs in the category of nanopower filter is also provided.
Keywords :
CMOS integrated circuits; band-pass filters; feedback; integrated circuit modelling; low-pass filters; low-power electronics; transistor circuits; CMOS low pass filter; CMOS technology; Cadence; circuit nonlinearity; circuit simulations; compact transistorized lowpass filter circuit; current consumption; filter core; filter passband; global feedback; nanopower filter; size 0.35 mum; subthreshold low pass filter; subthreshold-biased transistors; voltage 1 V; Band-pass filters; CMOS integrated circuits; Linearity; Passband; Power demand; Topology; Transistors; Analog filter; CMOS circuit; ECG filter; gm-C filter; low frequency; lowpass filter; ultra-low-power;
Conference_Titel :
Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2015 12th International Conference on
Conference_Location :
Hua Hin
DOI :
10.1109/ECTICon.2015.7207054
