SKY77742-21 Datasheet, PDF (1/2 Pages) Skyworks Solutions Inc. – Broadband Power Amplifier Module

PRODUCT SUMMARY
SKY77742-21 SkyHi^™ Broadband Power Amplifier Module for
WCDMA / HSDPA / HSUPA / HSPA+ (Bands I, II, IV, V, VIII)
CDMA (Bands I, II, V)
Applications
• WCDMA handsets
• HSDPA
• HSUPA
• CDMA2000
• EVDO (Rev. B) (bands I, II, V only)
Features
• Low voltage positive bias supply:
VBATT 3.0 V to 4.5 V
• Good linearity
• High efficiency
• Large dynamic range
• Small, low profile package
- 3 mm x 4 mm x 0.9 mm
- 16-pad configuration
• Power down control
• InGaP
• Supports low collector voltage
VCC operation
• Digital enable
• No VREF required
• CMOS compatible control signals
• Integrated directional coupler
• BiHEMT process
Description
The SKY77742-21 SkyHi™ Power Amplifier Module (PAM) is a fully matched, 16-pad, surface
mount module developed for Wideband Code Division Multiple Access (WCDMA), Code Division
Multiple Access (CDMA) and Evolution-Data Optimized (EVDO Rev. B). This small and efficient
module packs full coverage for WCDMA Bands I, II, IV, V, and VIII into a single compact package.
The SKY77742-21 meets stringent spectral linearity requirements for WCDMA transmission up
to maximum power output. The PAM also meets stringent spectral linearity requirements for
CDMA, HSDPA, HSUPA, HSPA+, and CDMA2000 data transmission with high power added
efficiency. A directional coupler integrated into the module eliminates the need for any external
coupler.
The single Gallium Arsenide (GaAs) Microwave Monolithic Integrated Circuit (MMIC) contains all
active circuitry in the module. The MMIC contains on-board bias circuitry, as well as input and
interstage matching circuits. Output match into a 50 Ω load is realized off-chip within the
module package to optimize efficiency and power performance.
The SKY77742-21 PAM is manufactured with Skyworks’ InGaP GaAs Heterojunction Bipolar
Transistor (HBT) process that provides for all positive voltage DC supply operation while
maintaining high efficiency and good linearity. No VREF voltage is required. Power down is
accomplished by setting the voltage on VENHB and VENLB to zero volts. No external supply side
switch is needed as typical “off” leakage is a few microamperes with full primary voltage
supplied from the battery.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
203219A • Skyworks Proprietary and Confidential Information • Products and product information are subject to change without notice. • June 17, 2014
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