Sensing Products

Proximity sensing in any environment

Best-in-class noise performance enables capacitive-based body and object sensing

Capacitive sensing provides contactless sensing that can be applied to a variety of applications using a sensor that is any metal or conductor. Capacitive sensing (FDC) devices use the change in resonant frequency of an inductive-capacitive (LC) tank to detect the change in capacitance of a given sensor. The presence of a human hand or other object adds additional capacitance. This causes a change in the characteristics of the resonant sensor which the FDC digitizes.

Touch capacitive sensing

Touch

The FDC family provides contactless broadband electromagnetic interference (EMI) resistant technology with low noise and high dynamic range.

Presence capacitive sensing

Presence

FDC capacitive sensing technology is an automotive qualified, low power, high resolution solution with high immunity to noise and EMI.

Level capacitive sensing

Level

FDC capacitive sensing devices offer a high sensitivity method for direct and contactless liquid level sensing in non-conductive containers. Capacitive sensing can also be used to distinguish one liquid from another.

Featured products

FDC2214

Noise-immune capacitive sensing solution for proximity sensing

FDC1004

4 channel capacitance to digital converter for capacitive sensing solutions

FDC2112

Flexible capacitive sensing solution for proximity sensing

Touch

The FDC family provides contactless broadband EMI resistant technology with low noise and high dynamic range.

Buttons

The FDC family provides broadband EMI resistant buttons with low noise and high dynamic range. Common end equipment include portable electronics and medical equipment.

Featured reference designs

Noise-immune capacitive proximity sensor system

High temperature touch through glass

Presence

FDC capacitive sensing technology is an automotive qualified, low power, high resolution solution with high immunity to noise and EMI.

Ice & frost detection

Capacitive ice/frost buildup detection directly measures the level of ice built up on a cooling body in order to efficiently monitor when to turn on heating elements of a cooling system. Common end equipment include: major appliances and HVAC systems.

Featured reference designs

Capacitive frost or ice detection

Proximity sensing

FDC devices can measure the proximity of objects at a sensing distance that is correlated to the sensor area. FDC2xxx devices are immune to noise which aids proximity sensing in open environments for gesture recognition and screen wake-up. Common end equipment include: major appliances and automotive body sensors.

Featured reference designs

Noise-immune capacitive proximity sensor system

Capacitive-based human proximity detection for system wake-up & interrupt

Smart backlight control by white LED driver, ambient light, and proximity sensor

Featured documents

Capacitive proximity sensing using FDC1104

Kick-to-open lift gate

Capacitive technology enables a kick-to-open lift gate application that remains reliable in the presence of mud, water, EMI, and other possible interferences. Common end equipments include: automotive security systems.

Featured reference designs

Automotive capacitive proximity kick-to-open detection

Level

FDC capacitive sensing devices offer a high sensitivity method for direct and contactless liquid level sensing in non-conductive containers.

Liquid level

Capacitive liquid level sensing uses an out-of-phase technique to eliminate proximity interferences such as the human hand as well as compensations for environmental changes. Common end equipment include: major and small home appliances.

Featured reference designs

Capacitive-based liquid level sensing sensor

Featured documents

How to calibrate FDC1004 for liquid level sensing applications

Capacitive sensing: direct vs. remote

Liquid level sensing with the immersive straw approach

Capacitive sensing: out-of-phase liquid level technique

 

Technical resources

WEBENCH

Use this tool to get started with sensor design for proximity sensing applications

TI TechNotes

Your resource for capacitive sensing technical documents including blogs, TechNotes, application notes, and more

Reference designs

TI Designs deliver tested reference designs with BOM, schematics and testing information