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

200889C • Skyworks Proprietary and Confidential information. • Products and product information are subject to change without notice. • March 2, 2009

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PRODUCT SUMMARY

SKY77336 Power Amplifier Module for Quad-Band

GSM / GPRS / EDGE

Applications

• Quad-band cellular

handsets

• GMSK Modulation

- Class 4 GSM850/900

- Class 1 DCS1800/

PCS1900

- Class 12 GPRS multi-slot

operation

• EDGE modulation

- Class E2 GSM850/900

- Class E2 DCS1800/

PCS1900

Features

• High efficiency:

- GSM850, 52%

- GSM900, 52%

- DCS, 50%

- PCS, 50%

• Small outline

- 5 x 5 mm

• Low profile

- 0.9 mm, max

• Low VRAMP current

- 10 μA

Description

SKY77336 Power Amplifier Module (PAM) is designed in a compact form factor for quad-band cellular

handsets comprising GSM850/900, DCS1800 and PCS1900, supporting Gaussian Minimum-Shift

Keying (GMSK) and Polar Enhanced Data for GSM Evolution (EDGE) modulation. Class 12 General

Packet Radio Service (GPRS) multi-slot operation is also supported.

The module consists of GSM850/900 PA and DCS1800/PCS1900 PA blocks, impedance matching

circuitry for 50 Ω input and output impedances, and a Power Amplifier Control (PAC) block. The

custom CMOS integrated circuit provides the internal PAC function and interface circuitry. 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 InGaP/GaAs 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.

RF input and output ports of the SKY77336 are internally matched to a 50 Ω load to reduce the

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

(10 μA, typical) of the PAM module maximizes handset standby time.

The SKY77336 also contains band-select switching circuitry to select GSM (logic 0) or DCS/PCS

(logic 1) as determined from the Band Select (BS) signal. See Figure 1 shown below.

Figure 1. SKY77336 Functional Block Diagram