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TDC1000: TDC1000适用于高精度空气测量的情况吗?

Part Number: TDC1000


您好!我用TDC1000作为超声波模拟前端,用TDC72000来计时,超声波频率203KHz,TDC1000的时钟输入是13MHz,用于空气流速测量,两个超声波探头距离是50mm,在空气封闭的状态(空气没有流动)下,多次测量TOF的波动是30纳秒左右,这正常吗?理想状态下这个波动应高要越小越好。如何减小静态波动?最好能到皮秒级。