Silicon Labs RF Frequency Synthesizer Si4122

The Si413x is a monolithic integrated circuit that performs IF and dual-band, low-noise RF frequency synthesis for wireless personal communications applications. Features Dual RF and single IF frequency synthesizer RF1 VCO range 900 to 1800 MHz RF2 VCO range 750 to 1500 MHz IF output range 62.5 to 1000 MHz Dual synthesizer and single synthesizer derivatives available Fully integrated VCOs Programmable loop filters