FDC1004: capacitance keypad

Hailiang Zhang

Part Number: FDC1004
Other Parts Discussed in Thread: LDC3114, LDC2114

Tool/software:

Hi Team,

A customer is asking about a capacitive keyboard solution. It needs to support 1 or 4 buttons, and the operating temperature can support 105°C. Is there any recommended solution? Is FDCxx an option?

Regards，
Hailiang

over 1 year ago

0 John Miller - Sensing over 1 year ago

TI__Mastermind 40295 points

Hailiang,

Thank you for the inquiry.
The FDC1004 is certainly an option.
You can see more info on this part in the product folder or on the E2E FDC1004 Frequently Asked Questions page.

If an inductive sensor is a possibility, they might consider the LDC2114 or the LDC3114.
Those devices' product folders show good lists examples of reference designs and app notes oriented towards button-push applications.

Regards,
John

Sensors

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FDC1004: capacitance keypad