AlGaAs/GaAs HBTs FOR ANALOG AND DIGITAL APPLICATIONS

AlGaAs/GaAs Heterojunction Bipolar Transistor (HBT) technology has emerged as an important IC technology for high performance electronic systems. Many outstanding circuits have been demonstrated as a result of the AlGaAs/GaAs HBTs high speed, high accuracy and its semi-insulating substrate. Several GaAs HBT manufacturing lines have been established; some of which are shipping products. In this paper, we describe AlGaAs/GaAs HBT technology, summarize some key and representative circuits in analog, A/D conversion and digital applications, and provide prospects of GaAs HBT research.