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INA233位数读不满是怎么回事?

Other Parts Discussed in Thread: INA233

最近用INA233做测试,故意将电流值设置成过流状态,用万用表测试Rshunt两端电压,为118mV,已经大于最大测量范围了。但是打印出来的code为31999(0x7CFF),而非32768(0x7FFF).用示波器卡了,示数读取是正确的。不知问题出现在哪里了。

(下图中第二个数据标错了,应该是0x7C而不是0xfc)