The LTC6946 is a high performance, low noise, 6.39GHz phase-locked loop (PLL) with a fully integrated VCO, including a reference divider, phase-frequency detector (PFD) with phase-lock indicator, ultralow noise charge pump, integer feedback divider, and VCO output divider. The charge pump contains selectable high and low voltage clamps useful for VCO monitoring.The integrated low noise VCO uses no external components. It is internally calibrated to the correct output frequency with no external system support.The part features a buffered, programmable VCO output divider with a range of 1 through 6, providing a wide frequency range.Frequency Coverage OptionsLTC6946-1LTC6946-2LTC6946-3LTC6946-40 DIV = 12.240 to 3.7403.080 to 4.9103.840 to 5.7904.200 to 6.3900 DIV = 21.120 to 1.8701.540 to 2.4551.920 to 2.8952.100 to 3.1950 DIV = 30.747 to 1.2471.027 to 1.6371.280 to 1.9301.400 to 2.1300 DIV = 40.560 to 0.9350.770 to 1.2280.960 to 1.4481.050 to 1.5980 DIV = 50.448 to 0.7480.616 to 0.9820.768 to 1.1580.840 to 1.2780 DIV = 60.373 to 0.6230.513 to 0.8180.640 to 0.9650.700 to 1.065ApplicationsWireless Base Stations (LTE, WiMAX, W-CDMA, PCS)Broadband Wireless AccessMilitary and Secure RadioTest and Measurement