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BQ76952EVM: BQ76952温度采样问题咨询

Part Number: BQ76952EVM
Other Parts Discussed in Thread: BQ76952

你好,

    BQ76952温度测量设置的内部上拉电阻为18K,通过数据手册知道其上拉电源为1.8V,假如现在外界温度为25℃,那么NTC的阻值为10K,此时TS1(用TS1通道测量温度)引脚的分压值应该为640mV,而实际用万用表测量电压值为30mV左右,并且该值跳动比较厉害,这是什么原因呐?