K Band Downconverter with Integrated Fractional-N PLL and VCO Features: RF front end with integrated RF balun and LNA Double balanced, active mixer with high dynamic range IF amplifier Fractional-N synthesizer with low phase noise, multicore VCO 5 V supply operation with integrated LDO regulators Output P1dB: 7 dBm Output IP3: 16 dBm Conversion gain: 36 dB Noise figure: 7 dB RF input frequency range: 16.95 GHz to 22.05 GHz Internal LO frequency range: 16.35 GHz to 21.15 GHz IF frequency range: 900 MHz to 2500 MHz Single-ended 50 Ω input impedance and 75 Ω IF output impedance Programmable via 4-wire SPI 32-lead, 5 mm × 5 mm LFCSP