The AP134-501 is a high performance IC power amplifier module designed for use as the final amplification stage in tri-band GSM and GPRS mobile phone applications (880915, 17101785 and 18501910 MHz). It features 3-cell battery operation, a band select switch, a single positive analog power control input for both bands, and exceptional power added efficiency. The amplifier is manufactured on an advanced InGaP HBT process, known industry-wide for its excellent reliability and performance. The amplifier module is completely selfcontained, requiring no external matching components.