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A 3-V, 10-100-MHz continuous-time seventh-order 0.05° equiripple linear phase filter

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3 Author(s)
Rao, N. ; DataPath Syst. Inc., Los Gatos, CA, USA ; Balan, V. ; Contreras, R.

A 3-V continuous-time Gm-C filter based on a seventh-order 0.05° equiripple response is presented for read channels. The design features a low-voltage, wide-dynamic-range transconductor, a stable biasing scheme, and a power-efficient filter architecture. The filter is tunable for cutoff frequencies from 10 to 100 MHz and provides up to 13 dB of magnitude boost and up to ±30% of group delay adjustment for use in high-data-rate, extended partial-response maximum-likelihood channels. The filter is implemented in 0.29-μm BiCMOS technology, occupies 0.5 mm2, and dissipates 120 mW.

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:34 ,  Issue: 11 )