PRODUCT SUMMARY SKY77185 Power Amplifier Module for WCDMA / HSDPA (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% @ 26.5 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 The SKY77185 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 SKY77185 delivers unsurpassed talk-time advantages. The SKY77185 meets the stringent spectral linearity requirements of High Speed Downlink Packet Access (HSDPA) data transmission with high power added efficiency for power output of up to 26.5 dBm. 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 SKY77185 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 SKY77185 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. • CMOS compatible control signals Figure 1. Functional Block Diagram Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 200848A • Skyworks Proprietary and Confidential Information. • Products and product information are subject to change without notice. • May 19, 2008 1 Ordering Information Model Number Manufacturing Part Number SKY77185 Product Revision Package Operating Temperature SKY77185 MCM 3 x 3 x 1.0 mm –30 °C to +85 °C Date Description Revision History Revision A March 10, 2008 Initial Release B May 19, 2008 Revise: Features (p1), Figure 1 Copyright © 2008, Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products. 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