PRODUCT SUMMARY CX77314 PA Module for Quad-band GSM850/900 DCS1800 PCS1900 / GPRS Applications The CX77314 Power Amplifier Module (PAM) is designed in a compact form factor for quad-band cellular handsets comprising GSM850/900, DCS1800, and PCS1900 operation. The PAM also supports Class 10 and Class 12 General Packet Radio Service (GPRS) multi-slot operation. The module consists of a GSM850/900 PA block and a DCS1800/PCS1900 PA block, impedance-matching circuitry for 50 Ω input and output impedances, and interface circuitry. The two separate Heterojunction Bipolar Transistor (HBT) PA blocks are fabricated onto a single Gallium Arsenide (GaAs) die. One PA block supports the GSM850/900 bands and the other PA block supports the DCS1800 and PCS1900 bands. Both PA blocks share common power supply pins to distribute current. A custom CMOS integrated circuit provides the internal interface circuitry, including a current amplifier that minimizes the required power control current (IAPC) to 10 µA, typical. The GaAs die, the Silicon (Si) die, and the passive components are mounted on a multi-layer laminate substrate. The assembly is encapsulated with plastic overmold. Distinguishing Features • • • • • • High efficiency GSM850 55% GSM900 55% DCS 45%; PCS 45% Input/output matching 50 Ω internal Small outline 8 mm × 10 mm Low profile 1.5 mm maximum Low APC current 10 µA, typical Gold plated, lead-free contacts Applications The RF input and output ports are internally matched to 50 Ω to reduce the • Quad-band cellular handsets number of external components for a quad-band design. Extremely low leakage encompassing current (10 µA, typical) of the dual PA module maximizes handset standby time. GSM850/900 (Class 4) The CX77314 also contains band select switching circuitry to select GSM (logic 0) DCS1800 and DCS/PCS (logic 1) as determined from the Band Select (BS) signal. In the PCS1900, and functional block diagram shown below, the BS pin selects the PA output GPRS (Class 10 and Class 12) (DCS/PCS OUT or GSM850/900 OUT) while the Analog Power Control (APC) controls multi-slot operation the level of output power. Functional Block Diagram HBT GSM850/900 IN Match Power Control Band Select CMOS Bias Controller DCS/PCS IN Match Match GSM850/900 OUT Match DCS/PCS OUT Advance Information Skyworks Solutions, Inc. Proprietary and Confidential © 2001-2003 Skyworks Solutions, Inc., All Rights Reserved. 101860P3 January 3, 2003 © 2001-2003, 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 SKYWORKS™ 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. Skyworks™ products are not intended for use in medical, lifesaving or life-sustaining applications. Skyworks' customers using or selling Skyworks™ 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.: Skyworks™, the Skyworks symbol, and "Breakthrough Simplicity"™. Product names or services listed in this publication are for identification purposes only, and may be trademarks of third parties. Thirdparty 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. 4311 Jamboree Rd. Newport Beach, CA. 92660-3007 www.skyworksinc.com