A 1V monolithic transformer-coupled 30-Gb/s 2:1 multiplexer in 120 nm CMOS

A completely integrated transformer coupled 2:1 multiplexer, for high speed operation, in 0.12 /spl mu/m standard CMOS is presented. The multiplexer uses a monolithic transformer to couple the clock to the multiplexer core. This circuit technique allows the 2:1 multiplexer to work from a single 1 V supply voltage while achieving data rates of 30 Gb/s.