The Design of a Broadband,High gain,Low Noise Amplifier Implementation
Xuejie Sun · Journal of Xiangfan Vocational and Technical College · 2010
This paper describes a broadband,high gain,low noise amplifier implementation of the design,the system use AT89S52 chip to control the core;an INA128 instrumentation amplifier input stage to reduce noise interference,and the composition of variable gain wideband amplifier AD603 as the middle class to increase the gain and signal noise ratio;use upper-stage high-power amplifier tubes with discrete MOS transistors.The system is running stable and indicators achieves the design requirements with a good man-machine interface.