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CC2652R: 控制8位精度DAC出现跳动问题

Part Number: CC2652R

如上图所示,是CC2652R1 DAC输出的电压,在数值从127跳转到128后,理论上电压应该变大,但是实测却向下跳变了118mV,这是设计的bug还是我设置的不对吗?

这个DAC是8位精度的,我从0设置到255,理论上电压会慢慢等差的从0上升到参考电压,但是中间在127和128之间有一个异常。