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[TMS320F28335] 内部AD采样的速率最快可以达到多少?

配置了PWMA_SOC触发AD中断,去采样正弦信号。采样数据存储在Sample[1000]的数组里,然后利用仿真器的graph功能看图形。

当AD采样率在100kHz以下时,透过仿真器可以看到理想的采样波形。但当采样率达到500kHz时,graph看到的图形就很乱了。不知道究竟是仿真器的数据传输有限制,还是AD采样的数据有限制?