ADF4377 Low Jitter Microwave Wideband Synthesizers Analog Devices Inc. ADF4377 Low Jitter Microwave Wideband Synthesizers are high-performance, ultra-low jitter, and dual-output integer-N Phased Locked Loop (PLL) with integrated Voltage-Controlled Oscillators (VCO). These high-performance PLL feature a -239dBc/Hz figure of merit, ultra-low 1/f Noise, and a high Phase Frequency Detector (PFD) frequency that can achieve ultralow in-band noise and integrated jitter. The fundamental VCO and output divider generate frequencies from 800MHz to 12.8GHz. The ADF4377 synthesizers integrate supply bypass capacitors, saving board space on compact boards.