A two-sample per cycle, programmable five-tap, area-efficient finite-i
mpulse response (FLR) filter for hard-disk drive PRML read channels is
presented. The design is optimized for low power, achieving a figure
of 6.25 mu W/MHz [6] with a gate density of 2.3 K, by a combination of
algorithmic, architectural, circuit-level, and layout techniques.