SI4133W - Silicon Laboratories

SI4133W RF SYNTHESIZER

The Si4133W is a monolithic integrated circuit that performs RF and IF synthesis for GSM/GPRS and W-CDMA wireless communications. In dualmode GSM/UMTS handsets, the Si4133W meets demanding requirements for very low phase noise and fast settling time for both modes. The Si4133W integrates three complete phase-locked loops (PLLs) on a single die including VCOs.

Features

Dual RF synthesizers RF1: 2.3 GHz to 2.6 GHz RF2: 750 MHz to 1.7 GHz IF synthesizer IF: 62.5 MHz to 1.0 GHz Integrated VCOs, loop filters, dividers, and phase detectors Minimal external components Continuous operation over a wide temperature range Fast settling time: 200 µsec Low phase noise 5 µA standby current 28-lead MLP, 5 x 5 mm Ordering Information: See page 28. Applications Single-mode W-CDMA wireless handsets, terminals, and modems Dual-mode GSM/UMTS wireless handsets, terminals, and modems GNDR RFLD Pin Assignments Si4133W-BM SDATA IFOUT GNDR SENB SCLK GNDI VDDI Description Th.