In this paper, we introduce the noise mechanism, configure the noise model of differential amplifier, analyse the origin where noise comes from, calculate the equivalent input noise, and show the application of the differential amplifer in low noise circuit. 介绍了噪声机制,构建了差分放大器的噪声模型,分析了其噪声来源,计算出其等效输入噪声(EIN),证明了差分放大器的低噪声应用。
The equivalent input noise voltage, offset voltage drift, common mode rejection, power source rejection and other characteristics of a common source-common grid cascade amplifier is analysed in detail. 本文对一种共源-共栅串接差分输入级运算放大器的等效输入噪声(EIN)电压、失调电压温漂、共模抑制比和电源电压抑制比等参数进行了详细的分析。
Based on the equivalent circuit model of a two-port optical receiver front-end, the relationship between the equivalent input noise current spectral density and the noise figure is analyzed. 根据光接收机前端等效电路模型,建立了噪声系数与等效输入噪声(EIN)电流谱密度的关系。
The results show that the system equivalent input noise is stable on the time, the system has good demodulation linearity, and the dynamic range can be larger than 100 dB with small demodulation bandwidth. 其中等效输入噪声(EIN)在长时间内具有稳定性,系统具有良好的解调线性度,在较小解调带宽的下系统具有100dB以上的动态范围。
Equivalent Input Noise(EIN) of Cascade JFET Amplifier 级联结型场效应管放大电路的等效输入噪声(EIN)