Low-Voltage Multi-Mode Gm-C Channel Selection Filter for Mobile Applications

Tien Yu Lo, Chung Chih Hung

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Scopus citations

Abstract

A CMOS transconductor for multi-mode mobile channel selection filter is presented. The transconductor includes a voltage-to-current converter and a current multiplier. Voltage-to-current conversion employs linear region MOS transistors and the circuit features high linearity over a wide input swing range. The current multiplier which operates in the weak inversion region provides a wide transconductance tuning range without degrading the linearity. A third-order Butterworth low-pass filter implemented with the transconductors was designed by TSMC 0.18-μm CMOS process. The measurement results show that the filter can operate with the cutoff frequency of 135 kHz to 2.2 MHz. The tuning range and the linearity performance would be suitable for the wireless specifications of GSM, Bluetooth cdma2000, and Wideband CDMA. In the design, the maximum power consumption at the highest cutoff frequency is 2 mW under a 1-V supply voltage.

Original languageEnglish
Title of host publicationProceedings of the IEEE 2007 Custom Integrated Circuits Conference, CICC 2007
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages635-638
Number of pages4
ISBN (Electronic)1424407869, 9781424407866
DOIs
StatePublished - 1 Jan 2007
Event29th Annual IEEE Custom Integrated Circuits Conference, CICC 2007 - San Jose, United States
Duration: 16 Sep 200719 Sep 2007

Publication series

NameProceedings of the IEEE 2007 Custom Integrated Circuits Conference, CICC 2007

Conference

Conference29th Annual IEEE Custom Integrated Circuits Conference, CICC 2007
CountryUnited States
CitySan Jose
Period16/09/0719/09/07

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    Lo, T. Y., & Hung, C. C. (2007). Low-Voltage Multi-Mode Gm-C Channel Selection Filter for Mobile Applications. In Proceedings of the IEEE 2007 Custom Integrated Circuits Conference, CICC 2007 (pp. 635-638). [4405812] (Proceedings of the IEEE 2007 Custom Integrated Circuits Conference, CICC 2007). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CICC.2007.4405812