SI4133W Datasheet, Silicon Laboratories

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.

Single-mode W-CDMA wireless handsets, terminals, and modems Dual-mode GSM/UMTS wireless handsets, terminals, and modems .