PRODUCT SUMMARY
SKY77705 Power Amplifier Module for WCDMA / HSDPA /
HSUPA / HSPA
+
/ LTE – Band VIII (880–915 MHz)
Applications
•
WCDMA handsets
•
HSDPA
•
HSUPA
•
HSPA
+
•
LTE
Description
The SKY77705 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 880–915 MHz bandwidth coverage into a single compact package. Because of high
efficiencies attained throughout the entire power range, the SKY77705 delivers unsurpassed talk-time
advantages. The SKY77705 meets the stringent spectral linearity requirements of High Speed
Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), and Long Term
Evolution (LTE) 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 SKY77705 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 SKY77705 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.
Features
•
Low voltage positive bias
supply 3.2 V to 4.2 V
•
Good linearity
•
High efficiency
-
40% @ 28.5 dBm
•
Large dynamic range
•
Small, low profile package
-
3 mm x 3 mm x 0.9 mm
-
10-pad configuration
•
Power down control
•
InGaP
•
Supports low collector
voltage operation
•
Digital Enable
•
No V
REF
required
•
CMOS compatible control
signals
•
Integrated Directional
Coupler
Figure 1. Functional Block Diagram
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201224A • Skyworks Proprietary and Confidential Information. • Products and product information are subject to change without notice. • January 25, 2010
1
Copyright © 2009, Skyworks Solutions, Inc. All Rights Reserved.
Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products. These materials are provided by Skyworks as a service to its customers and may be
used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials. Skyworks may make changes to its documentation, products,
specifications and product descriptions at any time, without notice. Skyworks makes no commitment to update the information and shall have no responsibility whatsoever for conflicts,
incompatibilities, or other difficulties arising from future changes to its documentation, products, specifications and product descriptions.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by or under this document. Except as may be provided in Skyworks’ Terms and Conditions of
Sale for such products, Skyworks assumes no liability whatsoever in association with its documentation, products, specifications and product descriptions.
THESE MATERIALS ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED OR OTHERWISE, RELATING TO SALE AND/OR USE OF SKYWORKS PRODUCTS
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