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PDF SKY77186 Data sheet ( Hoja de datos )
| Número de pieza | SKY77186 | |
| Descripción | Power Amplifier Module | |
| Fabricantes | Skyworks Solutions | |
| Logotipo |  |
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PRODUCT SUMMARY
SKY77186 Power Amplifier Module for WCDMA / HSDPA
Band I (1920–1980 MHz)
Applications
• WCDMA handsets
• HSDPA
Features
• Low voltage positive bias
supply
- 3.2 V to 4.2 V
• Good linearity
• High efficiency
- 40% @ 28.25 dBm
• Large dynamic range
• 10-pad package
- 3 x 3 x 0.85 mm
• Power down control
• InGaP
• Supports low collector
voltage operation
• Digital Enable
• No VREF required
• CMOS compatible control
signals
• Integrated Directional
Coupler
The SKY77186 Power Amplifier Module (PAM) is a fully matched 10-pad surface mount module
developed for Wideband Code Division Multiple Access (WCDMA) applications. This small and efficient
module packs full 1920–1980 MHz bandwidth coverage into a single compact package. Because of
high efficiencies attained throughout the entire power range, the SKY77186 delivers unsurpassed
talk-time advantages. The SKY77186 meets the stringent spectral linearity requirements of High
Speed Downlink Packet Access (HSDPA) data transmission with high power added efficiency. A
directional coupler is integrated into the module thus eliminating 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-ohm load is realized off-chip within the module package to
optimize efficiency and power performance.
The SKY77186 PAM is manufactured with Skyworks’ InGaP GaAs Heterojunction Bipolar Transistor
(HBT) BiFET process that provides for all positive voltage DC supply operation while maintaining high
efficiency and good linearity. Primary bias to the SKY77186 is supplied directly from any three-cell
Ni-Cd, a single-cell Li-Ion, or other suitable battery with an output in the 3.2 to 4.2 volt range. No
VREF voltage is required. Power down is accomplished by setting the voltage on VENABLE 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.
Figure 1. Functional Block Diagram
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201010A • Skyworks Proprietary and Confidential Information. • Products and product information are subject to change without notice. • February 2, 2009
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