Tool/software:
To: Texas Instruments Support Team
Dear TI Support Team,
I am a user of your FDC2214 capacitance-to-digital converter and I have a question regarding its application with our custom sensor.
Our sensor is designed to measure changes in capacitance and has a specific structure:
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It features 12 individual bottom electrodes, each assigned to its own pin (1 through 12).
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A dielectric layer is applied over these bottom electrodes.
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A single, common top electrode is layered on top, which is assigned to a 13th pin.
Currently, we are attempting to take measurements using the Differential mode. We have connected one of the bottom electrodes to the IN2A port and the common top electrode to the IN2B port on the FDC2214 EVM's Channel 2.
However, after reviewing the documentation, I understand that there are two distinct measurement configurations: Single-ended mode and Differential mode.
To ensure we are using the FDC2214 optimally, could you please provide guidance on the following points:
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Cable Connection Methods: Please clarify the correct wiring for both Single-ended and Differential modes.
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Recommended Measurement Method: Given the structure of our 12-channel sensor, which mode would you recommend as the most suitable for accurate and reliable measurements?
Thank you for your time and assistance.
Best regards,
Beom
