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INA169输出电压不对

Other Parts Discussed in Thread: INA169

原理图是按照手册上画的,采样电阻0.1Ω,测试的时候将电源短路,直接调节电流大小,

测试的结果:

0A,采样电阻两侧0mV,Vout=14mV

1A,采样电阻两侧100mV,Vout=40mV

2A,采样电阻两侧200mV,Vout=50mV

3A,采样电阻两侧300mV,Vout=90mV

结果不对呀,例如1A的电流,按照Vo = Is Rs Rl /1000计算出来,应该是1*0.1*10000=1V才对