Ability to collect high accuracy, high input impedance and high common mode rejection ratio of the technical parameters, making the system more reliable results reflect the true acquisition. 高精度的采集能力,高输入阻抗和高共模抑制比(CMRR)的技术参数,使得系统能更可靠的反映真实采集结果。
Signal amplification system designed partly based on the differential op amp amplifier circuit to improve the signal to noise ratio, increasing the signal common mode rejection ratio. 系统的信号放大设计部分采用了差分运放放大电路,以提高信号的信噪比,并增大信号的共模抑制比(CMRR)。
Analog front-end circuit consists of preamplifier, low pass filter circuit and back stage amplifier circuit, preamplifier circuit instrumentation amplifier is used because it has a high input impedance, high common mode rejection ratio ( CMRR ), low noise, and low drift. 模拟前端电路由前置放大电路、高低通滤波电路和后级放大电路组成,前置放大电路用的是仪表放大器,因为它有高输入阻抗、高共模抑制比(CMRR)(CMRR)、低噪声、低漂移。
Based on the structure, an ultra-low voltage operational amplifier is designed, which provides a rail-to-rail common-mode input voltage range and output voltage swing, as well as a high common mode rejection ratio ( CMRR ). 基于此结构,实现了一种超低压运算放大器。仿真分析表明,该运算放大器能够实现轨到轨(rail-to-rail)的共模输入电压范围和输出电压摆幅,以及较高的共模抑制比(CMRR)。
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(CMRR)的可编程精密差动测量放大器。