A CMOS 80mW 400MHz seventh-order MLF FLF linear phase filter with gain boost

Zhu, X., Sun, Y. and Moritz, J. (2008) A CMOS 80mW 400MHz seventh-order MLF FLF linear phase filter with gain boost. In: Procs IEEE 15th Int Conf on Electronics, Circuits & Systems : ICECS 2008. Institute of Electrical and Electronics Engineers (IEEE), pp. 300-303. ISBN 978-1-4244-2182-4
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A 400MHz CMOS seventh-order linear phase gm-C filter based on current-mode (CM) follow-the-leader-feedback (FLF) 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 0.18mum CMOS process and with 2.5V power supply have shown that the cut-off frequency of the filter ranges from 290MHz to 430MHz and dynamic range is about 54dB. The group delay ripple is approximately 6% over the whole tuning range and total power consumption is only 78.7mW at 400MHz cut-off frequency.
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Date Deposited 15 May 2025 16:24
Last Modified 30 May 2025 23:11

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