Product Description
The RF5222 is a linear, medium-power, high-efficiency, two-stage amplifier IC designed specifically for battery-powered WLAN applications such as PC cards, mini PCI, and compact flash applications. The device is manufactured on an advanced InGaP Gallium Arsenide Heterojunction Bipolar Transistor (HBT) process, and has been designed for use as the final RF amplifier in 2.5GHz OFDM and other spread-spectrum transmitters. The device is provided in a 2.2mmx2.2mm, 8-pin, QFN with a backside ground. The RF5222 is designed to maintain linearity over a wide range of supply voltage and power output. The RF5222 also has built-in power detector and incorporates the input and interstage matching components internally which reduces the component count used externally and makes it easier to incorporate on any design.

FEATUREs
◾ Single Power Supply 3.0V to
   4.2V
◾ 26dB Minimum Gain, Input
   Matched to 50Ω
◾ 2.4GHz to 2.5GHz Frequency
   Range
◾ 11g POUT=+17dBm@3% Typ
   EVM, 125mA

APPLICATIONs
◾ IEEE802.11b/g/n WLAN
   Applications
◾ 2.5GHz ISM Band Applications
◾ Commercial and Consumer
   Systems
◾ Portable Battery-Powered
   Equipment
◾ Spread-Spectrum and MMDS
   Systems