FDC1004DGSR

Capacitive sensing using grounded capacitive sensors is a contactless sensing technology that combines ultra-low power consumption, low cost, and high resolution, suitable for applications such as proximity detection, gesture sensing, material analysis, and remote liquid level sensing. Sensors in a capacitive sensing system can be any metal or conductor, enabling low-cost, highly flexible system designs. The FDC1004 is a high-resolution, 4-channel capacitance-to-digital converter for implementing capacitive sensing solutions. Each channel has a full-scale range of ±15pF and can handle sensor offset capacitance of up to 100pF, which can be programmed internally or implemented as an external capacitor to track environmental changes over time and temperature. The high offset capacitance capability enables the use of remote sensors. The FDC1004 also includes shield drivers for sensor shielding, which reduce EMI and help focus the sensing direction of capacitive sensors. The FDC1004's compact package makes it suitable for space-constrained applications. The FDC1004 is available in a 10-pin WSON package and features an I2C interface for MCU connectivity.

Applications

• Proximity wake-up
• Gesture sensing
• Automotive door/kick sensor
• Automotive rain drop sensor
• Remote and direct liquid level sensing
• High-resolution metal profiling
• Rain/fog/ice/snow detection
• Material dimension detection
• Material stack height

Key features

• Input range: ±15pF
• Measurement resolution: 0.5fF
• Maximum offset capacitance: 100pF
• Programmable output rate: 100/200/400S/s
• Maximum shield load: 400pF
• Supply voltage: 3.3V
• Temperature range: -40℃ to 85℃
• Active current consumption: 750µA; Standby current consumption: 29µA
• Interface: I2C
• Channels: 4