Silicon bipolar 14 Gb/s 1:4-demultiplexer IC regarding system requirements

A 1:4-demultiplexer IC meeting the essential requirements for lightwave communication systems, has been designed based on a 21 GHz f/sub T/ 0.4 /spl mu/m Si bipolar process. It operates up to 14 Gb/s (14 GHz) with a phase margin of 250/spl deg/. The power consumption is 2 W with a -4.5 V supply.