SI4133G

Si41 33G Si412 3G/22G/13G/12G D U A L -B A N D R F S Y N T H E S I Z E R W I T H I N T E G R A T E D V C O S FOR GSM AND GPRS WIRELESS COMMUNICATIONS 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, 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.net/ G -B T ! Dual-Band RF Synthesizers ! Fast Settling Time: 140 µs Low Phase Noise Programmable Power Down Modes 1 µA Standby Current 18 mA Typical Supply Current 2.7 V to 3.6 V Operation Packages: 24-Pin TSSOP and 28-Pin MLP Si4133G-BT 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 SENB VDDI IF O U T GNDI IF L B IF L A GNDD VDDD GNDD X IN PW DNB AUXOUT GNDR R FL D R FL C GNDR R FL B Functional Block Diagram R efe re nce A m p lifier P ow er D ow n C ontrol R FL A GNDR GNDR X IN ÷ 65 P hase D etector R F1 R FL A R FL B R FO U T VDDR...