Texas Instruments FDC1004Q
The FDC1004Q is a high-resolution, AEC-Q100 qualified, 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, which can be either programmed internally or can be an external capacitor for tracking environmental changes over time and temperature. The large offset capacitance capability allows for the use of remote sensors.FEATURES
●1 Qualified for AutomotiveAPPLICATIONS
● AEC-Q100 Qualified With the Following Results – Device Temperature Grade 1: -40°C to 125°C Ambient Operating Temperature Range – Device HBM ESD Classification Level 2 – Device CDM ESD Classification Level C5● 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 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.