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SKY77174 데이터시트 PDF




Skyworks Solutions에서 제조한 전자 부품 SKY77174은 전자 산업 및 응용 분야에서
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기능 Power Amplifier Module
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SKY77174 데이터시트, 핀배열, 회로
www.DataSheet4U.com
PRODUCT SUMMARY
SKY77174 Power Amplifier Module for WCDMA / HSDPA
(1920–1980 MHz)
Applications
WCDMA Handsets
HSDPA Handsets
Personal Communications
Services (PCS)
Wireless local loop (WLL)
Features
No VREF required
Low voltage positive bias
- 3.1 V to 4.6 V
Supports low collector
voltage operation
Good linearity
High efficiency at all power
levels (17.5% at 16 dBm)
Large dynamic range
Low Profile package
4 mm x 4 mm x 1.1 mm
10-pad configuration
Power down control
InGaP
Digital VENABLE
Digital or Analog VCONTROL
Description
The SKY77174 Power Amplifier module is a fully matched 10-pad surface mount module developed
for Wideband Code Division Multiple Access (WCDMA) applications. This small and efficient power
amplifier packs full coverage of the 1920–1980 MHz bandwidth into a single compact package. The
SKY77174 meets the stringent spectral linearity requirements of HSDPA (High Speed Downlink Packet
Access) data transmission with high power added efficiency for power output of up to 28 dBm.
Because of high efficiencies attained throughout the entire power range, the SKY77174 delivers
unsurpassed talk-time advantages.
The single Gallium Arsenide (GaAs) Microwave Monolithic Integrated Circuit (MMIC) contains all active
circuitry in the module. The MMIC includes on-board bias circuitry, as well as input and interstage
matching circuits. The output match is realized off-chip within the module package to optimize
efficiency and power performance into a 50 load. This device 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. Primary bias to the SKY77174 is
supplied directly from a three-cell Ni-Cd, a single-cell Li-Ion, or other suitable battery with an output
in the 3.1 to 4.6 volt range. No VREF voltage is required. Power down is accomplished by setting the
voltage on VENABLE to zero volts. Digital bias control can be used to optimize efficiency at high and low
power or analog bias control can be used to optimize efficiency over the entire power range. No
external supply side switch is needed as typical “off” leakage is a few microamperes with full primary
voltage supplied from the battery.
Figure 1. SKY77174 Functional Block Diagram
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
200894A • Skyworks Proprietary and Confidential Information. • Products and product Information are subject to change without notice. • April 18, 2008
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