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EVM430-FR6047: CH0_IN 與 CH1_IN 的回波信號經過電容到MPS430時異常

Part Number: EVM430-FR6047
Other Parts Discussed in Thread: TIDA-01486

我有2塊EVM430-FR6047,量測傳感器至電容之間都有正常回波信號如A與B,但在經過耦合電容進入MPS430時 信號產生異常,一塊是有2個pulse干擾,一個是量測直接對GND,而ADC讀取也無法正常