Title :
A 260 MHz 5th-order Gm-C Biquad Low-Pass filter with wide frequency tuning range
Author :
Fan, Jinhan ; Li, Wei ; Li, Ning ; Ren, Junyan
Author_Institution :
State Key Lab. of ASIC & Syst., Fudan Univ., Shanghai, China
Abstract :
A 260 MHz continuous-time 5th-order Gm-C biquad low-pass filter with an automatic tuning circuit is described. The Nauta¿s transconductor is applied for high frequency design. The cutoff frequency tuning can be achieved by adjusting load capacitance in two ways. The filter cutoff frequency is 260 MHz. The HD3 is less than -50 dB for input signals up to 400 mVpp. The power consumption is 24 mW with 1.8-V supply voltage.
Keywords :
VHF filters; biquadratic filters; circuit tuning; continuous time filters; low-pass filters; operational amplifiers; Nauta transconductor; VHF filters; biquad low-pass filters; continuous time filters; operational transconductance amplifiers; power 24 mW; tuning range; voltage 1.8 V; Bandwidth; Capacitance; Circuit optimization; Cutoff frequency; Digital control; Low pass filters; Transconductance; Transconductors; Tuning; Voltage;
Conference_Titel :
Solid-State and Integrated-Circuit Technology, 2008. ICSICT 2008. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2185-5
Electronic_ISBN :
978-1-4244-2186-2
DOI :
10.1109/ICSICT.2008.4734859
