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A 2-μm CMOS fifth-order low-pass continuous-time filter for video-frequency applications

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2 Author(s)
B. Stefanelli ; Inst. Superieur Electron. du Norde, CNRS, Lille, France ; A. Kaiser

A fifth-order elliptic low-pass continuous-time filter based on triode transconductors for applications in the video frequency range is presented. Fabricated in a standard 2-μm CMOS technology, the circuit occupies 6 mm2 of silicon area including the automatic tuning circuitry. The filter achieves a 7-MHz cutoff frequency using a parasitic pole compensation scheme. The dynamic range is 40 dB and power consumption is 30 mW for a 5-V supply. A transconductor biasing strategy which allows a continuous tuning range for the cutoff frequency of one decade is presented

Published in:

IEEE Journal of Solid-State Circuits  (Volume:28 ,  Issue: 7 )