3.2 GHz, 0.2 mu m gate CMOS 1/8 dynamic frequency divider

A CMOS 1/8 frequency-divider IC operating at up to 3.2 GHz at a suitable supply voltage of 2.0 V has been achieved with 0.2 mu m gate CMOS technology. The IC consists of three T-connected D-type flip-flops and buffers. A clocked inverter type dynamic flip-flop is adopted for the first stage binary frequency divider. A supply voltage of only 1.2 V is sufficient for operation at 2.0 GHz dissipating 4.6 mW. the highest operation frequency of 4.2 GHz is obtained at 3.0 V.