Product Description
The RF7228 is a high-power, high-efficiency, linear power amplifier designed for use as the final RF amplifier in 3V, 50 W-CDMA mobile cellular equipment and spread-spectrum systems. This PA is developed for UMTS Band 8 which operates in the 880MHz to 915MHz frequency band. The RF7228 has two digital control pins to select one of three power modes to optimize performance and current drain at lower power levels. The part also has an integrated directional coupler which eliminates the need for an external discrete coupler at the output. The RF7228 is fully HSDPA and HSPA+ compliant and is assembled in a 10-pin, 3mmx3mm module.

FEATUREs
◾ HSDPA and HSPA+ Compliant
◾ Low Voltage Positive Bias
   Supply (3.0V to 4.35V)
◾ +28.5dBm Linear Output
   Power (+27.0dBm HSDPA)
◾ High Efficiency Operation
   41% at POUT=+28.5dBm
   22% at POUT=+18.0dBm
   11% at POUT=+10.0dBm
◾ Low Quiescent Current in Low
   ◾ower Mode: 6mA
◾ Internal Voltage Regulator
   Eliminates the Need for 
   External Reference Voltage (VREF)
◾ 3-Mode Power States with
   Digital Control Interface
◾ Integrated Power Coupler
◾ Integrated Blocking and 
   Collector Decoupling Capacitors

APPLICATIONs
◾ WCDMA/HSDPA/HSUPA 
   Wireless Handsets and Data
   Cards
◾ Dual-Mode UMTS Wireless
   Handsets