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26位数据采集器的原理

Other Parts Discussed in Thread: ADS1281

请教各位大大,一般采用成品ADC做出来的数采很难突破24位,包括用ADS1281在200HZ的采样率下也很难突破130DB的动态范围。但是目前有国外公司的产品达到140DB-150DB的动态范围,号称突破26位分辨率(200HZ以上采样率),有没有大神知道原理的,一起讨论学习下。

非常感谢