TI工程师你好,我们项目需要用到ADS1274。但在看数据手册时,在看到采样率时有一些疑惑,我想问的是“它的最大data rate 144KSPS”是每个通道的采样率有144K呢?还是四个通道总的数据率是144K,也就是每个通道只有36K的采样率,输入信号频率最高只能是36/2=18(KHz)呢?希望能得到你们的解答,谢谢!
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Hi
ADS1274, 是四路并联输出,fCLK = 37MHz, 每路的数据率是144kSPS.
其算法见datasheet : http://www.ti.com.cn/cn/lit/ds/symlink/ads1274.pdf, 第二十六页Table 8.