Description

The SKY77547 is a transmit and receive front-end module (FEM) with Integrated Power Amplifier Control (iPAC™) for quad-band cellular handsets comprising GSM850/900 and DCS1800/PCS1900 operation. Designed in a low profile, compact form factor, the SKY77547 offers a complete Transmit VCO-to-Antenna and Antenna-to-Receive SAW filter solution. The FEM also supports Class 12 General Packet Radio Service (GPRS) multi-slot operation.

Features

• High efficiency

- 44 (GSM)

- 42 (DCS/PCS)

• Low transmit supply current

- 1.30 A (GSM)

- 0.86 A (DCS/PCS)

• Internal ICC sense resistor for iPAC

• Closed loop iPAC

• 50 Ω matched Input/Output

• Tx–VCO-to-antenna and antenna-to-Rx-SAW filter RF interface

• Tx harmonics below –33 dBm

• PHEMT RF switch affords high linearity, low insertion loss, and less than 20 μA supply current in receive modes

• Small, low profile package

- 8 mm x 6 mm x 1.05 mm

- 30-pad configuration

• Compatible with multiple logic families

• Low APC current: 25 μA

Applications

• Quad-band cellular handsets encompassing

- Class 4 GSM850/900

- DCS1800/PCS1900

- Class 12 GPRS multi-slot operation