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A modular transconductance reduction technique for very low-frequency G m-C filters

Sawigun, C; Serdijn, WA; (2012) A modular transconductance reduction technique for very low-frequency G m-C filters. In: (pp. pp. 1183-1186).

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Abstract

This paper presents a modular technique for transconductance reduction of a sub-threshold transconductor. This technique employs an ordinary differential pair circuit as a module to build a linear attenuator and to be the main transconductor. By applying the linear attenuation, the input linear range expansion and transconductance reduction are simultaneously achieved by sacrificing around 33% of its dynamic range compared to the ordinary differential pair transconductor. A 2 nd-order G m-C low-pass as an application of the proposed transconductor has been designed and simulated using 0.18-μm AMS technology. Compared to existing designs, post-layout simulation results show that, with a smaller active area (including bias circuitry, transconductors and capacitors), this design provides greater dynamic range, wider tuning range and lower power consumption. © 2012 IEEE.

Type: Proceedings paper
Title: A modular transconductance reduction technique for very low-frequency G m-C filters
DOI: 10.1109/ISCAS.2012.6271445
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: http://discovery.ucl.ac.uk/id/eprint/1528339
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