A 3.4 GB/S Low Latency 1 Bit Input Digital FIR-Filter in 0.13 μM CMOS

Abstract

This paper presents a low latency, one bit input, high-speed FIR-filter designed for multi-Gb/s mixed signal decision feedback equalizers. The filter utilizes a carry-save FIR tap structure and an efficient dual-edge-flip-flop-multiplexer. The filter has been implemented in a standard 0.13 μm CMOS technology. Simulation results from extracted layout shows correct functionality up to 3.4 G words/s with a latency ≪280 ps.