CN0375
详情介绍
概览
产品详情
检测电阻器 R1 把电流转换为电压。在此放大器中对该电压实施从输入到输出的缓冲 (增益为 1)。V1 测试该电路对于共模变化的响应。一项仿真将显示：由于共模电压 V1 引起的输出电压变化是非常小。
LT1997-3把一个精准运算放大器与高度匹配的电阻器相结合，以形成一款用于准确地放大电压的单芯片解决方案。在未采用外部组件的情况下可实现 –13 至 +14 的增益和 0.006% (60ppm) 的准确度。LT1997-3 特别适合用作差动放大器，在此场合中，极佳的电阻器匹配可产生大于 91dB 的共模抑制比。
工具及仿真模型
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
