A 43-45Gb/s 2.5V integrated clock and data recovery circuit in SiGe using low-voltage topologies

A 43-45Gb/s clock and data recovery circuit is presented. It uses half-rate architecture with a binary phase detector based on low-voltage latch and multiplexer topologies. The circuit was implemented in a SiGe technology with f/sub T/ = 120GHz. It demonstrates a 600 MHz locking range and consumes 650mW from a 2.5V power supply. The chip measures 1.25mm/sup 2/ and requires no external components.