Skyworks SKY65170-11 is a fully-matched, 0.5 W Power Amplifier (PA) with high efficiency, designed for use in the 860 to 900 MHz band. ¡El device is fabricated using Skyworks high reliability Indium Gallium Phosphide (InGaP) Heterojunction Bipolar Transistor (HBT) technology. This process allows for single supply operation while maintaining high efficiency and good linearity. ¡El SKY65170-11 contains all of the active bias and RF matching circuits, which make it easy to integrate into 50 Ω RF systems. ¡El internal input and output match are optimized for gain, 1 dB Compression Point (P1dB), Adjacent Channel Leakage Ratio (ACLR), and efficiency when integrated in a 50 Ω system. ¡El primary bias to the SKY65170-11 can be supplied directly from a single 5 VDC supply. ¡El PA is designed to operate with lower current by reducing the bias voltage. ¡El device is internally matched and mounted in a 20-pin, 6 x 6 mm Multi-Chip Module (MCM) Surface-Mounted Technology (SMT) package, which allows for a highly manufacturable low cost solution. ¡El device package and pinout for the 20-pin MCM are shown in Figure 1. A block diagram of the SKY65170-11 is shown in Figure 2.