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PRODUCT SUMMARY
SKY77148: PA Module for CDMA2000 (450-460 MHz)
APPLICATIONS
* Digital cellular (CDMA2000)
* Wireless Local Loop (WLL)
FEATURES
* Low voltage positive bias supply
The SKY77148 Power Amplifier Module (PAM) is a fully matched 7-pin surface mount module developed for Code Division Multiple Access (CDMA2000) handset and Wireless Local Loop applications. This small and efficient power amplifier packs full coverage of the 450-460 MHz bandwidth into a single compact package. The device meets the stringent CDMA2000 linearity requirements to and exceeding 29 dBm output power. A low current pin (VCONT) provides improved efficiency for the low RF power range of operation. The single Gallium Arsenide (GaAs) Microwave Monolithic Integrated Circuit (MMIC) contains all active circuitry within the module, which includes on-board bias circuitry as well as input and interstage matching circuits. Output match into a 50 load is realized off-chip within the module package to optimize efficiency and power performance. This device is manufactured with Skyworks' 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 SKY77148 is supplied directly from a three-cell nickel cadmium, a single-cell lithium ion, or other suitable battery with a rated output in the 3.2 to 4.2 volt range. Setting the voltage on the low current reference pin to zero volts accomplishes power down. No external supply side switch is needed as typical "off" leakage is a few microamperes with full primary voltage from the battery.
(3.2 V to 4.2 V)
* Good linearity * High efficiency across wide
dynamic range
* Dual-mode operation * 7-pin package
6 mm x 6 mm x 1.5 mm
* Power down control * Low power state control
* CDMA2000
VREF (3)
VCC1 (1)
VCONT (4)
VCC2 (5)
Driver Stage Bias
Power Stage Bias
RF IN (2)
Input Match
DA
Inter Stage Match
PA
Output Match
(6) RF OUT
MMIC MODULE
(7) GND
(7) GND
103031_001
Figure 1. Functional Block Diagram
Skyworks Solutions, Inc., Proprietary
103031P3 [781] 376-7000 * FAX [781] 376-3100 * SALES@SKYWORKSINC.COM * WWW.SKYWORKSINC.COM MAY 29, 2003
(c) 2002-2003, 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. Skyworks assumes no responsibility for errors or omissions in these materials. Skyworks may make changes to its 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 products and product descriptions. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as may be provided in Skyworks' Terms and Conditions of Sale for such products, Skyworks assumes no liability whatsoever. THESE MATERIALS ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, RELATING TO SALE AND/OR USE OF SKYWORKSTM PRODUCTS INCLUDING WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. SKYWORKS FURTHER DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. SKYWORKS SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THESE MATERIALS. SkyworksTM products are not intended for use in medical, lifesaving or life-sustaining applications. Skyworks' customers using or selling SkyworksTM products for use in such applications do so at their own risk and agree to fully indemnify Skyworks for any damages resulting from such improper use or sale. The following are trademarks of Skyworks Solutions, Inc.: SkyworksTM, the Skyworks symbol, and "Breakthrough Simplicity"TM. Product names or services listed in this publication are for identification purposes only, and may be trademarks of third parties. Third-party brands and names are the property of their respective owners. Additional information, posted at www.skyworksinc.com, is incorporated by reference.
General Information Skyworks Solutions, Inc. 20 Sylvan Rd. Woburn, MA 01801 www.skyworksinc.com

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