Title :
A programmable VHF CMOS read-channel continuous-time filter with on-chip tuning
Author :
Shou, Xiaoqiarzg ; Green, Michael
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Irvine, CA, USA
Abstract :
A fifth-order CMOS read-channel filter with a wide programmable/tunable frequency range is presented. The fully differential gm-C filter achieves a programmable bandwidth from 60 MHz to 500 MHz in 7 bands with an accurate on-chip tuning circuit which allows 10% variation within each band. High frequency operation and very accurate transfer function realization are achieved simultaneously by use of capacitance equalization and negative impedance techniques. This filter, which is realized in TSMC 0.25 μm mixed-signal CMOS technology, dissipates 142 mW with 2.5 V supply voltage and occupies an active area of 0.4 mm2
Keywords :
CMOS analogue integrated circuits; VHF filters; circuit feedback; circuit tuning; continuous time filters; integrated circuit design; programmable filters; 0.25 micron; 142 mW; 2.5 V; 60 to 500 MHz; CMOS continuous-time filter; TSMC mixed-signal CMOS technology; accurate transfer function realization; active filter; capacitance equalization; fifth-order filter; fully differential gm-C filter; high frequency operation; negative impedance techniques; onchip tuning; programmable VHF filter; programmable bandwidth; programmable frequency range; read-channel continuous-time filter; tunable frequency range; Bandwidth; CMOS technology; Capacitance; Circuit optimization; Filters; Frequency; Impedance; Transfer functions; Tunable circuits and devices; VHF circuits;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.921827
