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Title: A low-power Gm-C low pass filter for mobile applications
Authors: Lakshmi, M Santhana
Vanathi, P T
Keywords: Common mode feedback;Current multiplier;Low pass filter;Transconductor
Issue Date: Oct-2010
Publisher: NISCAIR-CSIR, India
Abstract: This study presents a high performance complementary metal oxide semiconductor (CMOS) transconductor used in a multimode channel selection filter for mobile applications. The design employs a voltage to current (V-I) converter and a two quadrant current multiplier. Cascoded flipped voltage follower (CASFVF) is used as an input stage in class AB pseudo differential pair to perform V-I conversion. Current multipliers are used to linearise output from V-I converter and provide additional tuning ability to transconductor. A second - order Butterworth low pass filter (LPF) is designed with proposed transconductor and simulated using TSMC 0.35-m CMOS technology in H-spice in synopsis tool. LPF consumes very low power (0.2 mW) and provides a wide tuning range (200 KHz - 3.1 MHz).
Page(s): 750-755
ISSN: 0975-1084 (Online); 0022-4456 (Print)
Appears in Collections:JSIR Vol.69(10) [October 2010]

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