Design of new low-voltage CMOS VHF continuous-time lowpass biquad filters

Chung-Yu Wu*, Heng Shou Hsu

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

A low-voltage very high-frequency CMOS lowpass biquad filter using simple transconductance (Gm) amplifier and transresistance (Rm) amplifier is proposed and analyzed. Both single-ended and fully-differential topologies have been developed in this paper. Simulation results show that for the single-ended lowpass biquad filter, the center frequency to can be tuned from 123 MHz to 181.9 MHz whereas the power dissipation varies from 2.92 mW to 3.36 mW. For 1% THD, the equivalent maximum output signal of the single-ended filter with center frequency 181.9 MHz is about 67 mV with a 2.5 V power supply. For the fully-differential lowpass biquad filter, the center frequency of can be tuned from 124 MHz to 218.7 MHz whereas the power dissipation varies from 7.94 mW to 9.44 mW. For 1% THD, the equivalent maximum output swing of the fully-differential filter with center frequency 218.7 MHz is about 414 mV under fully-balanced inputs with a 2.5 V power supply.

Original languageEnglish
Article number5086480
Pages (from-to)295-298
Number of pages4
JournalProceedings - IEEE International Symposium on Circuits and Systems
Volume1
DOIs
StatePublished - 1 Jan 1995
EventProceedings of the 1995 IEEE International Symposium on Circuits and Systems-ISCAS 95. Part 3 (of 3) - Seattle, WA, USA
Duration: 30 Apr 19953 May 1995

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