A 0.18 µm CMOS 3rd-Order Digitally Programmable Gm-C Filter for VHF Applications

Aranzazu OTIN
Santiago CELMA
Concepcion ALDEA

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E88-D    No.7    pp.1509-1510
Publication Date: 2005/07/01
Online ISSN: 
DOI: 10.1093/ietisy/e88-d.7.1509
Print ISSN: 0916-8532
Type of Manuscript: Special Section LETTER (Special Section on Recent Advances in Circuits and Systems--Part 1)
Category: Digital Circuits and Computer Arithmetic
Keyword: 
Gm-C filters,  differential transconductor,  digital programmability,  

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Summary: 
In this paper we report a 3rd-order Gm-C filter based on pseudo-differential continuous-time transconductors for applications in low-voltage systems over VHF range. By using a 0.18 µm pure digital CMOS process, a prototype low pass filter with -3 dB frequency programmable from 38 MHz to 213 MHz confirms the feasibility of the proposed filter in applications such as data storage systems.

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