FDC1004: Sensor Electrode

Janine Lin

Part Number: FDC1004

Can CINn pin have input voltage? If so, what is the maximum voltage?

Image below is our sensor(head), inside of it has a circuit board and has an output voltage. Does this sensor is ok to use to FDC1004 as a sensor electrode?

Thank you.

over 5 years ago

0 Bala Ravi over 5 years ago

TI__Expert 6625 points

Hi Janine,
We've got your request. Allow us some time to review your info and get back to you.

Best Regards,
Bala Ravi

0 Janine Lin over 5 years ago in reply to Bala Ravi

Expert 2190 points

Dear Bala

Any result?

0 Bala Ravi over 5 years ago in reply to Janine Lin

TI__Expert 6625 points

Hi Janine,
No, the CINx pins are used to set the DC voltages by the FDC1004 in order to measure the capacitance. They definitely can't be driven by another source.

Best Regards,
Bala Ravi

Please click "This resolved my issue" button if this post answers your question

0 Janine Lin over 5 years ago in reply to Bala Ravi

Expert 2190 points

ok Bala. Thank u.

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FDC1004: Sensor Electrode