你好!请教一下。我在TI官网上了解到这款INA333-HT差分放大器芯片,他的输入范围是要大于电源负极100mV,这个是强制要求的吗?因为我想把这个放大器连接热电偶,热电偶的电压范围是0到50mA
,如果我直接将热电偶连接到这个差分放大器的输入,这么使用会有什么影响吗?
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下面热电偶资料应该对你有帮助:
https://www.ti.com/lit/ml/slyp161/slyp161.pdf
https://www.ti.com/lit/an/sbaa354/sbaa354.pdf
另外注意 INA333-HT datasheet中Figure 36. Providing an Input Common-Mode Current Path