The CVCO55CC-4000-4000 from Crystek Corporation is a Voltage Controlled Resonator Oscillator with an output frequency of 4000 MHz. It has a tuning sensitivity of 5 MHz/V and a tuning voltage from 0.3 to 4.7 V. It provides an out power of up to 8 dBm and has a phase noise of -115 dBc/Hz at a 10 kHz offset. The oscillator requires a DC supply voltage of 8 V. It is available in a surface-mount package that measures 12.7 x 12.7 mm.