SKY77544

PRODUCT SUMMARY SKY77544 Tx-Rx FEM for Quad-Band GSM / GPRS / EDGE – Triple-Band WCDMA Antenna Switch Support Applications Quad-band cellular handsets encompassing - Class 4 GSM850/900 - Class 1 DCS1800 PCS1900 - Class 12 GPRS multi-slot operation - EDGE polar modulation - Triple band WCDMA antenna switch support Features Small, low profile package - 6 mm x 6 mm x 0.9 mm - 28-pad configuration Low input power range - 0 to 6 dBm High efficiency - GSM850 41% - GSM900 41% - DCS 40% - PCS 40% Tx-VCO-to-antenna and antenna-to-Rx-SAW filter RF interface Tx harmonics below -38 dBm Wideband envelope control path Input/Output matching 50 Ω internal Low APC current 20 μA High impedance control inputs 15 μA, typical Integrated module temperature sensor Description SKY77544 is a transmit and receive Front End Module (FEM) designed in a very low profile (0.9 mm), compact form factor for quad-band cellular handsets comprising GSM850/900, DCS1800, and PCS1900 operation — a complete transmit VCO-to-Antenna and Antenna-toreceive SAW filter solution. The FEM also supports Class 12 General Packet Radio Service (GPRS) multi-slot operation and EDGE Polar Modulation. WCDMA switch-through support is provided by three dedicated high-linearity ports. The module consists of a GSM850/900 PA and DCS1800/PCS1900 PA block, impedancematching circuitry for 50 Ω input and output impedances, Tx harmonic filtering, high linearitylow insertion loss switches, and a CMOS Power Amplifier Co...