LTC6946

LTC6946 Ultralow Noise and Spurious 0.37GHz to 6.39GHz Integer-N Synthesizer with Integrated VCO Features Description nn Low Noise Integer-N PLL with Integrated VCO nn –226dBc/Hz Normalized In-Band Phase Noise Floor nn –274dBc/Hz Normalized In-Band 1/f Noise nn –157dBc/Hz Wideband Output Phase Noise Floor nn Excellent Spurious Performance nn Output Divider (1 to 6, 50% Duty Cycle) nn Output Buffer Muting nn Low Noise Reference Buffer nn Charge Pump Current Adjustable from 250µA to 11.2mA nn Configurable Status Output nn SPI Compatible Serial Port Control nn PLLWizard™ Software Design Tool Support Applications nn Wireless Base Stations (LTE, WiMAX, W-CDMA, PCS) nn Broadband Wireless Access nn Military and Secure Radio nn Test and Measurement L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and PLLWizard is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. The LTC®6946 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...