PRODUCT SUMMARY CX77130 ry System SmartTM PA Module for CDMA PCS (1720-1780 MHz) Distinguishing Features * * * * * System SmartTM design Dual digital input for setting power states Three switchable power states Power down control Higher efficiency over large dynamic range 8-pin LCC package (6 x 6 x 1.5 mm) Full Korean PCS coverage ina The CX77130 Power Amplifier Module (PAM) for Code Division Multiple Access (CDMA) Personal Communications Service (PCS) incorporates a unique design feature that enables exceptionally low average battery current consumption. The CX77130 System SmartTM design incorporates two control pins that accept digital signals provided by the system's baseband ASIC. This digital control logic defines an RF power range of operation for the PA. The decoding logic within the PA uses this information to optimize efficiency within this power range while meeting the specification for Adjacent Channel Power Ratio (ACPR). * The two control pins (referred to as VCONT1 and VCONT2) allow the PA to be switched into one of four states. * * State/Power-range 3--high power mode, linear up to POUT = 28 dBm, total PA current less than 550 mA (VCONT1 = High, VCONT2 = High) * State/Power-range 2--medium power mode, linear up to POUT = 13 dBm, total PA current less than 130 mA (VCONT1 = Low, VCONT2 = High) * State/Power-range 1--low power mode, linear up to POUT = -5 dBm, total PA current less than 35 mA (VCONT1 = Low, VCONT2 = Low) * State/Power-range 0--power-down mode, leakage current less than 20 A (VCONT1 = Low, VCONT2 = Low, VREF = 0.0 V) Applications * * Personal Communications Services (PCS) Wireless Local Loop (WLL) eli m The total PA currents in States 1 and 2 are much lower than those achieved in a conventional Power Amplifier. Functional Block Diagram VCONT2 (8) VCONT1 (4) VCC (1, 5) VREF (3) Bias Circuits and Decoding Logic RFIN (2) Input Match DA Inter Stage Match PA Output Match RFOUT (6) Pr MMIC MODULE (7) GND (9) GND2 Preliminary Information (c) 2001, 2002 Conexant Systems, Inc., All Rights Reserved. 101879P1 March 8, 2002 (c) 2001, 2002 Conexant Systems, Inc. All Rights Reserved. ry Information in this document is provided in connection with Conexant Systems, Inc. ("Conexant") products. These materials are provided by Conexant as a service to its customers and may be used for informational purposes only. Conexant assumes no responsibility for errors or omissions in these materials. Conexant may make changes to specifications and product descriptions at any time, without notice. Conexant makes no commitment to update the information and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to its specifications and product descriptions. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Conexant's Terms and Conditions of Sale for such products, Conexant assumes no liability whatsoever. ina THESE MATERIALS ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, RELATING TO SALE AND/OR USE OF CONEXANT PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, CONSEQUENTIAL OR INCIDENTAL DAMAGES, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. CONEXANT FURTHER DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. CONEXANT SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS, WHICH MAY RESULT FROM THE USE OF THESE MATERIALS. Conexant products are not intended for use in medical, lifesaving or life sustaining applications. Conexant customers using or selling Conexant products for use in such applications do so at their own risk and agree to fully indemnify Conexant for any damages resulting from such improper use or sale. The following are trademarks of Conexant Systems, Inc.: ConexantTM, the Conexant C symbol, and "What's Next in Communications Technologies"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. For additional disclaimer information, please consult Conexant's Legal Information posted at www.conexant.com, which is incorporated by reference. Pr eli m Reader Response: Conexant strives to produce quality documentation and welcomes your feedback. Please send comments and suggestions to tech.pubs@conexant.com. For technical questions, contact your local Conexant sales office or field applications engineer. www.conexant.com General Information: U.S. and Canada: (800) 854-8099 International: (949) 483-6996 Headquarters - Newport Beach 4311 Jamboree Rd. Newport Beach, CA. 92660-3007