Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

203113A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • January 17, 2014

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PRODUCT SUMMARY

SKY77577-11 Tx-Rx Front-End Module for Quad-Band GSM /

GPRS / EDGE w/ 4-Band Antenna Switch Support and

HB PA Output for SGLTE Applications

Applications

• Quad-band cellular handsets

encompassing

• Class 4 GSM850/900

• Class 1 DCS1800/PCS1900

• Class 12 GPRS

multi-slot operation

• EDGE linear modulation

• 4-Band WCDMA antenna switch

support

Features

• Small, low profile package

- 6 mm x 6 mm x 0.9 mm

- 42-pad configuration

• High efficiency

GSM LB

- 47% High Power

- 29% Medium Power

- 15% Low Power

- 5% Ultra Low Power

• High efficiency

GSM HB at GSMHB TX module pin

- 46% High Power

- 29% Medium Power

- 14% Low Power

- 5% Ultra Low Power

• Tx-VCO-to-antenna and

antenna-to-Rx-SAW filter RF

interface

• Single RF input

Description

SKY77577-11 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-to-

receive SAW filter solution. The FEM also supports Class 12 General Packet Radio Service

(GPRS) multi-slot operation, and EDGE Linear Modulation. WCDMA switch-through support is

provided by four dedicated high-linearity ports. High band TX (DCS1800/PCS1900) is brought

out to a module pin for SGLTE applications.

The module consists of a GSM850/900 PA and DCS1800/PCS1900 PA block, impedance-

matching circuitry for 50

Ω input and output impedances, Tx harmonic filtering, high linearity-

low insertion loss switches, and a Multi-Function power amplifier Control (MFC) block.The

internal MFC function and interface circuitry is provided by a BiCMOS IC. .

Fabricated in InGaP/GaAs, the Heterojunction Bipolar Transistor (HBT) PA blocks support the

GSM850/900 bands and DCS1800/PCS1900 bands. Both PA blocks share common power

supply pads to distribute current. The output of the PA block and the outputs to the eight

receive pads connect to the antenna pad through a highly linear antenna switch. The WCDMA

and Rx ports feature a near 0 volts DC offset level, which eliminates any need for external

blocking capacitors. The InGaP/GaAs die, switch die, Silicon (Si) controller die, and passive

components are mounted on a multi-layer laminate substrate and the entire assembly is

encapsulated with plastic overmold.

The SKY77577-11 RF I/O ports are internally matched to a 50

Ω load to reduce the number of

external components for a quad-band design. Extremely low leakage current of the FEM

maximizes handset standby time. Band selection and control of transmit and receive RF signal

flows are performed via six external control pads (see Figure 1). Mode of operation, Tx, Rx,

Band (GSM850, GSM900, DCS, PCS, and UMTS) are controlled through the 7 logic inputs

M0DE0, MODE1, MODE3, MODE4, SW0, SW1, and SW2.