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ADC12DJ3200: 采样数据达不到满量程;

Part Number: ADC12DJ3200

jmode13,15bit有效位,32为位ane数据接收后如下拆解为IQ两路15bit:

AD输入单端测得摆幅262mV,差分的话就是524mV,我设置FS_RANGE为2000不会出现削波,采得的数据最大值为10000(距离16384还很远);设置FS_RANGE位0020,理论来说超出量程,但是采得数据最大才10200,这是为什么。以上两种设置抓取波形都是比较理想的正弦波