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Axiom Microdevices has introduced the AX502 device. This product offering from Axiom Microdevices integrates full quad-band GSM/GPRS PA function on a single Integrated Circuit (IC) using mainstream Silicon CMOS process technology. The company patented technology, deployed in the AX502, allows the use of 0.13um Silicon CMOS process technology to integrate all of the functions between transmitter output and transmit/receive switch. The power gain stages, small signal control circuitry and 50 ohm matching are all realized on a single die. The AX502 amplifies low-level radio frequency (RF) signals to the required high-power levels needed for transmission in GSM/GPRS mobile phone handsets or data modules. The device supports quad-band (GSM 850/900/1800/1900) operation. The integrated 50 ohm input and output matching circuitry, enables direct connection to the transceiver output and the transmit/receive switch input without the use of the external matching components. The power level is regulated via a fully integrated closed-loop power controller which ensures that the GSM power/time mask and switching spectrum may be met with adequate margin to allow robust mass production when subjected to a real world cell phone environment, such as highly elevated VSWR and low supply voltage. Samples of the AX502 are available now.



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