T0377

The T0377 is a 4 mm *4 mm 3-V CDMA PCS band power amplifier module designed for use in mobile phones. Its extremely small 4 mm *4 mm package makes it ideal for today's very small data enable phones. The module supports the IS-95 and IS-98 standards and is also 1xRTT compliant. The T0377 provides excellent RF performance with low current consumption resulting in longer talk times in portable applications. The heart of the module is a three-stage power amplifier manufactured in Atmel's SiGe technology. The T0377 provides the capability to be operated digitally (one or two bias state) or continuous quiescent current mode. In two-state quiescent current mode operation, the T0377 is controlled by the baseband processor using a CMOS-compatible I_CQ control voltage. Overall current consumption of the device is minimized by selecting the lowest I_CQ state available for each power output level. The module is 50- matched on the input and output, allowing the device to be used with minimal external circuitry.