SI4122G - Silicon Laboratories

SI4122G DUAL-BAND RF SYNTHESIZER

The Si4133G is a monolithic integrated circuit that performs both IF and dual-band RF synthesis for GSM and GPRS wireless communications applications. The Si4133G includes three VCOs, loop filters, reference and VCO dividers, and phase detectors. Divider and power down settings are programmable through a three-wire serial interface. http://www.DataSheet4U.ne.

Features

" " RF1: 900 MHz to 1.8 GHz RF2: 750 MHz to 1.5 GHz IF: 500 MHz to 1000 MHz ! ! ! ! ! ! IF Synthesizer " Integrated VCOs, Loop Filters, ! ! Varactors, and Resonators Minimal External Components Required Applications Pin Assignments ! GSM, DCS1800, and PCS1900 Cellular Telephones ! ! GPRS Data Terminals HSCSD Data Terminals S C LK S D ATA S i4 1 ! 33 Ordering Information: See page 28. Description The Si4133G is a monolithic integrated circuit that performs both IF and dual-band RF synthesis for GSM and GPRS wireless communications applications. The Si4133G includes three VCOs, loo.