A high speed, low power 8-tap digital FIR filter for PRML disk-drive read channels

This paper presents a high speed, low power 8-tap digital FIR filter for PRML disk-drive read channels. Enhancements on power consumption and speed are achieved by adopting the row compression scheme and proposed conditional carry selection method. The 8-tap digital FIR filter has been fabricated by 0.8um CMOS technology and occupied by 3.9mm×1.5mm. The experiment results show that the FIR filter operates to 180 MHz and disspates 140 mW/100 MHz at 3.7 V power supply. Approximately 27% reduction of the power is attained.