应用与设计

LTC3839 4.5V~14V 输入、1.2V/50A 输出、300kHz、DCR 检测、DTR 使能、降压型转换器

详情介绍

概览

产品详情

Two Op Amp Instrumentation Amplifier

仪表放大器给差分输入信号源带来了一个高输入阻抗,并提供了一个单端输出。本电路采用了用于差分输入端的双通道 LTC6081 的每个放大器的同相输入。增益利用外部电阻器设定在 1000 以上。CMRR 修整消除了电阻值容差的影响,这有可能由于输入共模电压的变化而产生差分信号。

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.

LTspice