15MHz wide tuning-range OTA with 69dBHD3 and its application to Gm-C filter

Jun Ye Lin*, Wei Hsiu Chang, Chung-Chih Hung

*Corresponding author for this work

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

1 Scopus citations

Abstract

This paper presents a high linearity operational transconductance amplifier (OTA). The OTA circuit combines the techniques of the double differential pairs (DDP) and Source-degenerated current mirrors to achieve high linearity in a large GM tuning range. With the Gm values ranged from 60μS to 130μS, the HD3 of the OTA is below 69dB at 15MHz. The OTA has been applied to a fourth-order linear phase low-pass filter for high speed system. The fourth-order low-pass filter with the cutoff frequency of 15MHz has been implemented. The filter is designed by 0.18-μm CMOS process technology, the HD3 performance is about 53dB, and the group delay variation is below 5% at cutoff frequency.

Original languageEnglish
Title of host publicationProceedings of 2011 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2011
Pages108-111
Number of pages4
DOIs
StatePublished - 28 Jun 2011
Event2011 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2011 - Hsinchu, Taiwan
Duration: 25 Apr 201128 Apr 2011

Publication series

NameProceedings of 2011 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2011

Conference

Conference2011 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2011
CountryTaiwan
CityHsinchu
Period25/04/1128/04/11

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  • Cite this

    Lin, J. Y., Chang, W. H., & Hung, C-C. (2011). 15MHz wide tuning-range OTA with 69dBHD3 and its application to Gm-C filter. In Proceedings of 2011 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2011 (pp. 108-111). [5783589] (Proceedings of 2011 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2011). https://doi.org/10.1109/VDAT.2011.5783589