A 0.18μm CMOS 300MHz Current-mode LF seventh-order linear phase filter for hard disk read channels

Xi Zhu*, Yichuang Sun, James Moritz

*Corresponding author for this work

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

A 300MHz CMOS seventh-order linear phase gm-C filter based on a current-mode multiple loop feedback (MLF) leap-frog (LF) structure is realized. The filter is implemented using a fully-differential linear operational transconductance amplifier (OTA) based on a source degeneration topology. PSpice simulations using a standard TSMC 0.18μm CMOS process with 2.5V power supply have shown that the cut-off frequency of the filter can be tuned from 260MHz to 320MHz and dynamic range is about 66dB. Group delay ripple is approximately 4.5% over the whole tuning range and maximum power consumption is 210mW.

Original languageEnglish
Article number4253386
Pages (from-to)3307-3310
Number of pages4
JournalProceedings - IEEE International Symposium on Circuits and Systems
Publication statusPublished - 2007
Externally publishedYes

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