A single-chip 12.5 Gbaud transceiver for serial data communication

A fully integrated single-chip SiGe BiCMOS 12.5 Gbaud serializer/deserializer operates with sub-picosecond PLL jitter and error rates below 5e-14 with both transmit and receive channels active. The chip includes a 12.5 GHz clock multiplier, a 12.5 Gbaud clock and data recovery circuit, a 16:1 multiplexer, 1:16 demultiplexer, and integrated test features. The die area is 6.1 mm/spl times/6.1 mm and consumes 3.3 W from a 3.3 V supply in normal operating mode.