DESCRIPTION

· The FDC1004 is a high-resolution, 4-channel capacitance-to-digital converter designed for capacitive sensing applications.
· It supports grounded capacitor sensors, offering a low-power, low-cost, and high-resolution contactless sensing solution.
· Each channel has a full-scale range of ±15pF and can handle up to 100pF of offset capacitance.
· The device includes shield drivers to reduce EMI interference and focus sensor direction.
· Available in 10-pin WSON and VSSOP packages with an I2C interface for MCU communication.

FEATURES

· Input range: ±15pF with 0.5fF resolution.
· Maximum offset capacitance: 100pF.
· Programmable output rates: 100/200/400 S/s.
· Maximum shield load: 400pF.
· Supply voltage: 3.3V, operating temperature: –40°C to 125°C.
· Current consumption: 750µA (active), 29µA (standby).
· Interface: I2C, 4 channels.

APPLICATIONS

· Proximity sensors and gesture recognition.
· Automotive door/kick sensors and rain sensors.
· Remote and direct liquid level sensing.
· High-resolution metal profiling.
· Rain/fog/ice/snow detection.
· Material size and stack height detection.