The ADF4158CCPZ-RL7 is a Phase Locked Loop (PLL) IC from Analog Devices with a 6.1 GHz Frac-N Direct Modulation. This device is a versatile, high-performance fractional-N synthesizer with an integrated voltage-controlled oscillator (VCO). It can be used to generate precision frequency synthesizers and local oscillators. It features integrated phase frequency detector, lowpass filter, dual modulus prescaler (M/N = 28 to 212), and fractional divider which enables fine frequency resolution. It also includes many features such as fast lock, programmable VCO control voltage, power down mode, pre-divide ration up to 128, frequency control range up to +/-5 % and wide tuning range of 0 - 10 kHz. It is available in a tiny 20-lead 4mm x 4mm LFCSP package, and is capable of operating from a single 3.3V supply.