A Dual-Supply 0.2-to-4GHz PLL Clock Multiplier in a 65nm Dual-Oxide CMOS Process

A 0.2-to-4GHz PLL generates the clock for an SoC in a 65nm CMOS process. The PLL uses dual-oxide devices operating in different voltage domains to generate a clock with a wide range of output frequencies and low jitter. The measured rms period jitter is 1.5ps at 2GHz and total power consumed from both the 1.0V and 1.8V supplies is 15mW.