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请问TDC7200对于START和STOP的输入电平要求在什么范围，可以使用mv吗？最低的触发电平是多少啊？
您好，
输入电平要求如下datasheet截图，不可以使用mV级的，因为电平太低TDC7200无法识别到。
对于上升沿最低触发电平应该是0.7*VDD；对于下降沿，触发电平应该是0.3*VDD：
下面链接对 START 和 STOP 脉冲的要求说明可能对您有帮助：
https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/1123292/tdc7200-what-are-the-pulse-requirements-for-the-start-and-stop-pulses/4173044?tisearch=e2e-sitesearch&keymatch=TDC7200%2520STAR%2520STOP#4173044
