3.5-Gb/s 0.35-μm CMOS data decision IC

Abstract

A data decision IC is designed for STM-16 SDH-systems. A differential high-speed master-slave DFF is used for the decision function. Wide-band high-gain amplifiers are used for input and output data buffers to obtain high sensitivity and sufficient drive capability. The chip was realized in a O.35-tm CMOS foundry technology. The chip size is 0.7 X 0.8mm2.The supply voltage is 5 V and the current is 50 mA. A working data rate of higher than 3.5Gb/s has been measured. The sensitivity is as low as 10--20mV.