Mainly through the voltage regulator chip, integrated operational amplifier, a programmable constant current source which is voltage-current mode is designed. When the current of constant current source flows through the gas sensor, the resistance signal of the sensor can turn into standard-voltage acquisition signal.
主要是通过稳压芯片,集成运放设计一个电压转电流型程控恒流源,恒流源的电流流经气体传感器,把传感器的电阻信号转换成标准的电压采集信号。
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.
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。
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