FDC1004

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design FDC1004 SNOSCY5B – AUGUST 2014 – REVISED APRIL 2015 FDC1004 4-Channel Capacitance-to-Digital Converter for Capacitive Sensing Solutions 1 Features 1 Input Range: ±15 pF Measurement Resolution: 0.5 fF Maximum Offset Capacitance: 100 pF Programmable Output Rates: 100/200/400 S/s Maximum Shield Load: 400 pF Supply Voltage: 3.3 V Temp Range: –40° to 125°C Current Consumption: – Active: 750 µA – Standby: 29 µA Interface: I2C Number of Channels: 4 2 Applications Proximity Sensor Gesture Recognition Automotive Door / Kick Sensors Automotive Rain Sensor Remote and Direct Liquid Level Sensor High-resolution Metal Profiling Rain / Fog / Ice / Snow Sensor Material Size Detection Material Stack Height 3 Description Capacitive sensing with grounded capacitor sensors is a very low-power, low-cost, high-resolution contactless sensing technique that can be applied to a variety of applications ranging from proximity sensing and gesture recognition to material analysis and remote liquid level sensing. The sensor in a capacitive sensing system is any metal or conductor, allowing for low cost and highly flexible system design. 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 ±15 pF and can handle a sensor offset capacitance of up to 100 pF...