The LMX2820 is a high-performance, wideband RF PLL with integrated VCO that supports a frequency range from 45 MHz to 22.6 GHz. The VCO operates from 5.65 GHz to 11.3 GHz, it uses the internal doubler to generate frequency up to 22.6 GHz. The device supports both fractional-N and integer-N modes, with a 32-bit fractional divider allowing fine frequency selection. The high performance PLL with figure of merit of –236 dBc/Hz and high phase detector frequency goes up to 300 MHz in fractional mode or 400 MHz in integer mode and can attain very low in-band noise and integrated jitter. Its integrated RMS jitter of 36-fs for a 6-GHz output makes the device an ideal low-noise source. The device accepts input reference frequency up to 1.4 GHz, which combined with frequency dividers and programmable low-noise multiplier allows flexible frequency planning. The high speed N-divider has no pre-divider, thus significantly reducing the amplitude and number of spurs. The additional programmable low-noise multiplier lets users mitigate the impact of integer boundary spurs. In fractional-N mode, the device can adjust the output phase by a 32-bit resolution. For applications that need fast frequency changes, the device supports an ultra-fast VCO calibration option, which takes around 2.5 μs. The LMX2820 adds support for generating or repeating SYSREF (compliant to JESD204B standard) making it an ideal low-noise clock source for high-speed data converters. The LMX2820 SYSREF fine delay adjustment is provided in this configuration to account for delay differences of board traces. This device uses a single 3.3-V supply and it has integrated LDOs that eliminate the need for onboard low-noise LDOs.