详细描述
The RF7248 is a high-power, high-efficiency, linear power amplifier designed for use as the final RF amplifier in 3V, 50? WCDMA 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 RF7248 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 RF7248 meets the spectral linearity requirements of High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), and Long Term Evolution (LTE) data transmission and is assembled in a 10-pin, 3mm x 3mm module.
特点
HSDPA /HSUPA /HSPA+/LTE
Low Voltage Positive Bias Supply (3.0V to 4.2V)
+28.5dBm Linear Output Power (+27.5dBm HSDPA and HSPA+)
High Efficiency Operation: 47% at POUT = +28.5dBm
Low Quiescent Current in Low Power Mode: 5mA when using a DC/DC converter
Internal Voltage Regulator Eliminates the Need for External Reference Voltage (VREF)
3-Mode Power States with Digital Control Interface
Optimized for DC/DC Converter Operation
Integrated Power Coupler
Integrated Blocking and Collector Decoupling Capacitors