SKY77175-13 Datasheet, PDF (1/2 Pages) Skyworks Solutions Inc. – Dual-Band PA Module for WCDMA / HSDPA Band II (1850-1910 MHz) and Band V (824-849 MHz)

PRODUCT SUMMARY
SKY77175-13 Dual-Band PA Module for WCDMA / HSDPA
Band II (1850–1910 MHz) and Band V (824–849 MHz)
APPLICATIONS
• WCDMA handsets
• HSDPA handsets
• Personal Communication
Services (PCS)
• Wireless Local Loop (WLL)
Features
• Low voltage positive bias
supply: 3.1 V to 4.6 V
• No VREF required
• Supports low collector
voltage operation
• Good linearity
• High efficiency
• Large dynamic range
• 14-pad package
• Low profile package
- 3 mm x 6 mm x 1.1 mm
• Separate digital VENABLE
pads for PCS and Cellular
modes of operation.
• Analog bias current control
using VCONT pad.
• InGaP
The SKY77175-13 Power Amplifier Module (PAM) is a fully matched, 14-pad, surface mount module
developed for Wideband Code Division Multiple Access (WCDMA) applications. This small and efficient
module packs full WCDMA Band II and Band V coverage into a single compact package. The
SKY77175-13 meets the stringent spectral linearity requirements of WCDMA transmission, with high
power added efficiency for power output to 29 dBm (Band II) and 29 dBm (Band V). A low current
analog pad (V_CONT) is provided to improve efficiency for the low RF power range of operation.
Gallium Arsenide (GaAs) Microwave Monolithic Integrated Circuits (MMIC) contain all active RF
circuitry as well as input and interstage matching circuits. Output match is realized off-chip within the
module package to optimize efficiency and power performance into a 50 Ω load. The devices are
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 SKY77175-13 is supplied directly from a three-cell Ni-Cad, a single-cell Li-Ion, or other
suitable batteries with outputs in the 3.1 to 4.6 volt range. Power down is accomplished by setting a
logic low level on the VEN pad. No external supply side switch is needed as typical “off” leakage is 15
microamperes with full primary voltage supplied from the battery.
Board real estate is reduced through simplified interface to the module: VCC, VCONT bias lines are
shared, and VREF is generated internally on the module.
VBIAS
VEN_BAND_II
VEN_BAND_V
VCONT
MMIC
BIAS and GAIN CONTROL
MODULE
IN_BAND_II
INPUT
DA
MATCH
INTER-STAGE
MATCH
PA
OUTPUT
MATCH
OUT_BAND_II
VCC1
IN_BAND_V
VCC2
INPUT
MATCH
DA
INTER-STAGE
MATCH
PA
Figure 1. Functional Block Diagram
OUTPUT
MATCH
OUT_BAND_V
200446_001
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
200893A • Skyworks Proprietary and Confidential information. • Products and product information are subject to change without notice. • April 18, 2008
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