Title :
70-280 MHz 21 mW 53 dB SFDR Gm-C filter
Author :
Li, Wenyuan ; Huang, Yi-Pai ; Hong, Z.
Author_Institution :
State Key Lab. of ASIC & Syst., Fudan Univ., Shanghai, China
Abstract :
A 70-280-MHz fifth-order Chebyshev Gm-C lowpass filter in 0.13--m CMOS is presented. A topological modification is proposed that can improve IIP3 for 10-dB compared to conventional Gm-C filters. Measured spurious free dynamic range (SFDR) is greater than 50-dB. The filter passband response is accurately maintained over four times frequency range by using unit Gm cell arrays and an independent Q tuning circuit. It consumes 21-mW under a supply voltage of 1.5-V and occupies an area of 0.12-mm2.
Keywords :
CMOS integrated circuits; Chebyshev filters; low-pass filters; CMOS; IIP3; SFDR Gm-C filter; fifth-order Chebyshev Gm-C lowpass filter; filter passband response; frequency 70 MHz to 280 MHz; power 21 mW; size 0.13 mum; spurious free dynamic range; voltage 1.5 V;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.8755
