可编程精密差动测量放大器

PROGRAMMABLE PRECISION MEASURING DIFFERENTIAL AMPLIFIER

介绍了一种由 DAC电压衰减器作为集成运放反馈电路的低噪声、低漂移、高输入阻抗和高共模抑制比的可编程精密差动测量放大器。LCD显示模块为控制提供友好的人机界面、实时显示放大倍数 ,并提供

By means of applied technology of IC operational amplifiers, digital to analog converter and single chip microcontroller, a programmable precision measuring differential amplifier with low noise, low drift, high input impedance and high common mode rejection ratio is developed and introduced. A LCD is used to give users a friendly operational interface and the measured parameters and results as well. The programmable logic device GAL acting as a keyboard coder is also presented here.