『FDC1004』

4-channel capacitance/digital converter for capacitive sensing "FDC1004"

Capacitive sensing using ground capacitors and sensors is a non-contact sensing technology with ultra-low power consumption, low cost, and high resolution, applicable in a wide range of applications from proximity detection and gesture recognition to raw material analysis and remote liquid level sensing. Since any metal or conductor can be used as a sensor in the capacitive sensing system, it enables low-cost and highly flexible system design. Each channel of the 'FDC1004' has a full-scale range of ±15pF and can accommodate sensor offset capacitance of up to 100pF. For tracking environmental changes across the entire time/temperature range, it allows for internal programming and can also use external capacitors. The large offset capacitance makes it suitable for remote sensors. Additionally, it features a shield driver for sensor shielding, enabling reduction of EMI interference and focusing the sensing direction of the capacitive sensor. Its small footprint makes it ideal for applications with space constraints. It is available in a 10-pin WSON/VSSOP package and includes an I2C interface for interfacing with MCUs. Evaluation modules and reference designs are also available.

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