请问如果我想用INA210,将0-10uA的电流转换为0-2V的电压,请问采样电阻需要选择多大,在设计方面有什么需要注意的,可否提供一些参考资料,谢谢啦
This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
您好,
在放大输入范围内将采样电阻选的大一些可以降低输入误差,但是较大的采样电阻使得在采样电阻上的功耗增加了,因此需折中考虑,具体见下面参考设计:
1、具备电流检测放大器的低(微型放大器)高侧双向电流检测电路
对应的英文:Low (microamp), high-side, current-sensing circuit with current-sensing amp
2、10-uA to 100-mA 0.05%-Error High-Side Current Sensing Design Guide