GSM/GPRS quad-band PA offers high level of integration -

GSM/GPRS quad-band PA offers high level of integration

Axiom Microdevices has developed what it is calling the first fully integrated CMOS power amplifier (PA) with the introduction of the AX502 device. The product integrates full quad-band GSM/GPRS PA functionality on one IC using mainstream silicon CMOS process technology at 0.13 microns. This includes all the necessary functions between the transmitter output and transmit/receive switch, the power gain stages, and the small-signal control circuitry.

The AX502 amplifies low-level RF signals to the required high-power levels needed for transmission in GSM/GPRS handsets or data modules and supports quad-band (GSM 850/900/1800/1900) operation. The integrated 50-ω 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.

Housed in an MSL JEDEC Level 3, lead-free, RoHS-compliant 5- by 5- by 0.9-mm MLF package, the AX502 is now sampling. For more information, visit

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