A CMOS fifth-order 400MHz current-mode LF linear phase filter for hard disk read channels

Zhu, X., Sun, Y. and Moritz, J. (2007) A CMOS fifth-order 400MHz current-mode LF linear phase filter for hard disk read channels. In: Procs of the 18th European Conference on Circuit Theory and Design, ECCTD :. Institute of Electrical and Electronics Engineers (IEEE), pp. 340-343. ISBN 1-4244-1342-7
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A 400 MHz CMOS fifth-order linear phase gm-c filter based on current-mode (CM) leapfrog (LF) structure is realized. The filter is implemented using a fully-differential linear operational transconductance amplifier (OTA) based on source degeneration topology. PSpice simulations in a standard TSMC 0.18 mum CMOS process and with 2.5 V power supply have shown that the cut-off frequency of the filter ranges from 330 MHz to 450 MHz and dynamic range is about 64 dB. The group delay is approximately 4% over the whole tuning range and total power consumption is only 190 mW at 400 MHz cut-off frequency.
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Date Deposited 15 May 2025 16:23
Last Modified 30 May 2025 23:10

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