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

103018B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 12, 2006

1

DATA SHEET

SKY77148 PA Module for CDMA2000 (450–460 MHz)

Applications

• Digital cellular (CDMA2000)

• Wireless Local Loop (WLL)

Features

• Low voltage positive bias

supply

- (3.2 V to 4.2 V)

• Good linearity

• High efficiency across wide

dynamic range

• Dual-mode operation

• 7-pin package

- 6 mm x 6 mm x 1.5 mm

• Power down control

• Low power state control

• CDMA2000

Skyworks offers lead

(Pb)-free "environmentally

friendly" packaging

that is RoHS compliant

(European Parliament

for the Restriction of

Hazardous Substances).

Description

The SKY77148 Power Amplifier Module (PAM) is a fully matched 7-pin surface mount module

developed for Code Division Multiple Access (CDMA2000) handset and Wireless Local Loop

applications. This small and efficient power amplifier packs full coverage of the 450–460 MHz

bandwidth into a single compact package. The device meets the stringent CDMA2000 linearity

requirements to and exceeding 29 dBm output power. A low current pin (VCONT) provides improved

efficiency for the low RF power range of operation.

The single Gallium Arsenide (GaAs) Microwave Monolithic Integrated Circuit (MMIC) contains all active

circuitry within the module, which includes on-board bias circuitry as well as input and interstage

matching circuits. Output match into a 50

optimize efficiency and power performance. This device is manufactured with Skyworks’ GaAs

Heterojunction Bipolar Transistor (HBT) process that provides for all positive voltage DC supply

operation while maintaining high efficiency and good linearity. Primary bias to the SKY77148 is

supplied directly from a three-cell Ni-Cd, a single-cell Li-Ion, or other suitable battery with a rated

output in the 3.2 to 4.2 volt range. Setting the voltage on the low current reference pin to zero volts

accomplishes power down. No external supply side switch is needed as typical “off” leakage is a few

microamperes with full primary voltage from the battery.

VCC1 (1)

VCC2 (5)

VREF (3)

RF IN (2)

(6) RF OUT

GND (7)

VCONT (4)

Driver

Stage Bias

Input Match

InterStage

Match

PA

Output Match

DA

Power

Stage Bias

103018_001

MMIC

MODULE

Figure 1. Functional Block Diagram