Product details

Number of input channels 4 Operating temperature range (°C) -40 to 125 Vs (min) (V) 2.7 Interface type I2C Resolution (bps) 28 Rating Catalog
Number of input channels 4 Operating temperature range (°C) -40 to 125 Vs (min) (V) 2.7 Interface type I2C Resolution (bps) 28 Rating Catalog
WQFN (RGH) 16 16 mm² 4 x 4
  • EMI-resistant architecture
  • Maximum output rates (one active channel):
    • 13.3kSPS (FDC2112, FDC2114)
    • 4.08kSPS (FDC2212, FDC2214)
  • Maximum input capacitance: 250nF (at 10kHz with 1mH inductor)
  • Sensor excitation frequency: 10kHz to 10MHz
  • Number of channels: 2, 4
  • Resolution: up to 28 bits
  • System noise floor: 0.3fF at 100SPS
  • Supply voltage: 2.7V to 3.6V
  • Power consumption: active: 2.1mA
  • Low-power sleep mode: 35µA
  • Shutdown: 200nA
  • Interface: I2C
  • Temperature range: –40°C to +125°C
  • EMI-resistant architecture
  • Maximum output rates (one active channel):
    • 13.3kSPS (FDC2112, FDC2114)
    • 4.08kSPS (FDC2212, FDC2214)
  • Maximum input capacitance: 250nF (at 10kHz with 1mH inductor)
  • Sensor excitation frequency: 10kHz to 10MHz
  • Number of channels: 2, 4
  • Resolution: up to 28 bits
  • System noise floor: 0.3fF at 100SPS
  • Supply voltage: 2.7V to 3.6V
  • Power consumption: active: 2.1mA
  • Low-power sleep mode: 35µA
  • Shutdown: 200nA
  • Interface: I2C
  • Temperature range: –40°C to +125°C

Capacitive sensing is a low-power, high-resolution contactless sensing technique that can be applied to a variety of applications ranging from proximity detection and gesture recognition to remote liquid level sensing. The sensor in a capacitive sensing system is any metal or conductor, allowing for a highly flexible system design.

The main challenge limiting sensitivity in capacitive sensing applications is noise susceptibility of the sensors. With the FDC2x1x resonant sensing architecture, performance can be maintained even in the presence of fluorescent light.

The FDC2x1x is a multi-channel family of high-resolution, high-speed capacitance-to-digital converters for implementing capacitive sensing solutions. The devices employ an innovative narrow-band based architecture to offer high rejection of out of band noise while providing high resolution at high speed. The devices support a wide excitation frequency range, offering flexibility in system design. A wide frequency range is especially useful for reliable sensing of conductive liquids such as detergent, soap, and ink.

The FDC221x is optimized for high resolution, up to 28 bits, while the FDC211x offers a fast sample rate of up to 13.3kSPS for easy implementation of applications that use fast moving targets. The large maximum input capacitance of 250nF allows for the use of remote sensors, as well as for tracking environmental changes over time such as temperature and humidity.

The FDC2x1x family targets proximity sensing and liquid level sensing applications for any type of liquids. For non-conductive liquid level sensing applications in the presence of interferences such as human hands, the FDC1004 is recommended and features integrated active shield drivers.

Capacitive sensing is a low-power, high-resolution contactless sensing technique that can be applied to a variety of applications ranging from proximity detection and gesture recognition to remote liquid level sensing. The sensor in a capacitive sensing system is any metal or conductor, allowing for a highly flexible system design.

The main challenge limiting sensitivity in capacitive sensing applications is noise susceptibility of the sensors. With the FDC2x1x resonant sensing architecture, performance can be maintained even in the presence of fluorescent light.

The FDC2x1x is a multi-channel family of high-resolution, high-speed capacitance-to-digital converters for implementing capacitive sensing solutions. The devices employ an innovative narrow-band based architecture to offer high rejection of out of band noise while providing high resolution at high speed. The devices support a wide excitation frequency range, offering flexibility in system design. A wide frequency range is especially useful for reliable sensing of conductive liquids such as detergent, soap, and ink.

The FDC221x is optimized for high resolution, up to 28 bits, while the FDC211x offers a fast sample rate of up to 13.3kSPS for easy implementation of applications that use fast moving targets. The large maximum input capacitance of 250nF allows for the use of remote sensors, as well as for tracking environmental changes over time such as temperature and humidity.

The FDC2x1x family targets proximity sensing and liquid level sensing applications for any type of liquids. For non-conductive liquid level sensing applications in the presence of interferences such as human hands, the FDC1004 is recommended and features integrated active shield drivers.

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Technical documentation

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Type Title Date
* Data sheet FDC2x1x Multi-Channel, High Resolution Capacitance-to-Digital Converter for Capacitive Sensing Applications datasheet (Rev. B) PDF | HTML 10 Oct 2024
Application note Common Inductive and Capacitive Sensing Applications (Rev. B) PDF | HTML 22 Jun 2021
Application note Simulate Inductive Sensors Using FEMM (Finite Element Method Magnetics) (Rev. A) PDF | HTML 16 Jun 2021
Technical article Accurate frost or ice detection based on capacitive sensing PDF | HTML 01 Mar 2018
Application brief Quantifying Ice and Frost Buildup Using Capacitive Sensors 30 Nov 2017
Technical article How to ensure precision in automated processes PDF | HTML 07 Nov 2017
Application note Capacitive Proximity Sensing Using FDC2x1y (Rev. A) 20 Oct 2017
Technical article Comparing capacitive and ultrasonic kick-to-open sensing PDF | HTML 06 Sep 2017
EVM User's guide FDC2114 and FDC2214 EVM User’s Guide (Rev. A) 14 Sep 2016
Application note Ground Shifting in Capacitive Sensing Applications PDF | HTML 27 May 2016
Technical article How to remove the ground-shift phenomenon from your capacitive-sensing application PDF | HTML 09 May 2016
Technical article Engineers do better than magicians: HMI touch through a thick glass PDF | HTML 26 Apr 2016
Technical article Design an energy-efficient, lower-acoustic cooker hood with an elegant user interf PDF | HTML 29 Mar 2016
Technical article Reduce power consumption in your capacitive-sensing applications PDF | HTML 19 Jan 2016
Application note Power Consumption Analysis for Low Power Capacitive Sensing Applications PDF | HTML 18 Jan 2016
Technical article Capacitive sensing: simple algorithm for proximity sensing PDF | HTML 23 Nov 2015
Technical article Capacitive sensing: which architecture should you choose? PDF | HTML 20 Oct 2015
EVM User's guide FDC2214 Proximity and Capacitive Touch EVM User’s Guide 14 Oct 2015
Application note Derivative Integration Algorithm for Proximity Sensing 29 Sep 2015
Application note Capacitive Sensing: Direct vs Remote Liquid Level Sensing Performance Analysis (Rev. A) 24 Jul 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

FDC2214EVM — FDC2214 with Two Capacitive Sensors Evaluation Module

The FDC2214 evaluation module demonstrates capacitive sensing technology to detect the presence of a conductive or non-conductive target. The evaluation module includes two PCB capacitive sensors that connect to two of the four channels of the FDC2214. An MSP430 microcontroller is used to interface (...)

User guide: PDF
Not available on TI.com
Evaluation board

FDC2214PROXSEN-EVM — FDC2214PROXSEN-EVM - Proximity and Capacitive Touch Sensing Evaluation Module

The FDC2214PROXSEN-EVM demonstrates capacitive proximity and touch button sensing with the use of TI's FDC221x capacitive sensing technology. The evaluation module is a complete hardware and firmware solution that integrates the 4-channel FDC2214, MSP430FR5969 and TPS61029 into one design. The (...)

User guide: PDF
Not available on TI.com
GUI for evaluation module (EVM)

SNOC028 Sensing Solutions EVM GUI Tool v1.10.0

Supported products & hardware

Supported products & hardware

Products
Humidity sensors
HDC1000 Low Power, 3% Accuracy Digital Humidity Sensor with Integrated Temperature Sensor HDC1050 ±3% low-power, digital humidity sensor with temperature sensor HDC2010 2% RH ultra-small, low-power digital relative humidity sensor HDC2080 2% RH ultra-low-power digital relative humidity sensor, interrupt/DRDY
Inductive sensor AFEs
LDC1001-Q1 Automotive, 5V, grade-0, Inductance to Digital Converter LDC1041 1-Ch, 5V, 24-bit L, 8-bit Rp, inductance to digital converter LDC1051 1-Ch, 5V, 8-bit Rp, inductance to digital converter LDC1101 1-Ch, 1.8V, 24-bit L, 16-bit Rp, inductance to digital converter for high speed applications LDC1312 2-Ch, 12-bit, general purpose inductance to digital converter LDC1312-Q1 2-Ch, 12-bit, general purpose automotive inductance to digital converter LDC1314 4-Ch, 12-bit, general purpose inductance to digital converter LDC1314-Q1 4-Ch, 12-bit, general purpose automotive inductance to digital converter LDC1612 2-Ch, 28-bit, high-resolution Inductance to digital converter LDC1612-Q1 2-Ch, 28-bit, high-resolution automotive inductance to digital converter LDC1614 4-Ch, 28-bit, high-resolution Inductance to digital converter LDC1614-Q1 4-Ch, 28-bit, high-resolution automotive inductance to digital converter LDC2112 2-Ch inductance to digital converter with baseline tracking for low power touch buttons LDC2114 4-Ch inductance to digital converter with baseline tracking for low power touch buttons
Signal conditioners
FDC1004 4-channel 16-bit capacitance-to-digital converter with active shield driver for EMC protection FDC1004-Q1 Automotive, 4-channel 16-bit capacitance-to-digital converter with active shield driver for EMC FDC2112 2-Ch, 12-bit, capacitance to digital converter FDC2112-Q1 2-Ch, 12-bit, automotive capacitance to digital converter FDC2114 4-Ch, 12-bit, capacitance to digital converter FDC2114-Q1 4-Ch, 12-bit, automotive capacitance to digital converter FDC2212 2-Ch, 28-bit, capacitance to digital converter FDC2212-Q1 2-Ch, 28-bit, automotive capacitance to digital converter FDC2214 4-Ch, 28-bit, capacitance to digital converter FDC2214-Q1 4-Ch, 28-bit, automotive capacitance to digital converter
Hardware development
Evaluation board
FDC1004EVM FDC1004EVM - 4 Channel Capacitive to Digital Converter Evaluation Module FDC1004QEVM Automotive 4-Channel Capacitive to Digital Converter Evaluation Module FDC2114EVM FDC2114 with Two Capacitive Sensors Evaluation Module FDC2214EVM FDC2214 with Two Capacitive Sensors Evaluation Module HDC1010EVM HDC1010 Low Power Humidity and Temperature Sensor Evaluation Module HDC1080EVM HDC1080 low-power humidity and temperature sensor evaluation module HDC2010EVM HDC2010 Low Power Humidity and Temperature Sensor Evaluation Module HDC2080EVM HDC2080 Low Power Humidity and Temperature Sensor Evaluation Module LDC1000EVM LDC1000EVM - Evaluation Module for Inductance to Digital Converter with Sample PCB Coil LDC1312EVM LDC1312 Evaluation Module for Inductance to Digital Converter with Sample PCB Coils LDC1314EVM LDC1314 Evaluation Module for Inductance to Digital Converter with Sample PCB Coils LDC1612EVM LDC1612 Evaluation Module for Inductance to Digital Converter with Sample PCB Coils LDC1614EVM LDC1614 Evaluation Module for Inductance to Digital Converter with Sample PCB Coils LDC2114EVM LDC2114 1.8V 4-Channel Inductive Touch Evaluation Module
Support software

SNOC033 FDC211x/FDC221x Current Consumption Estimator

Supported products & hardware

Supported products & hardware

Products
Signal conditioners
FDC2112 2-Ch, 12-bit, capacitance to digital converter FDC2112-Q1 2-Ch, 12-bit, automotive capacitance to digital converter FDC2114 4-Ch, 12-bit, capacitance to digital converter FDC2114-Q1 4-Ch, 12-bit, automotive capacitance to digital converter FDC2212 2-Ch, 28-bit, capacitance to digital converter FDC2212-Q1 2-Ch, 28-bit, automotive capacitance to digital converter FDC2214 4-Ch, 28-bit, capacitance to digital converter FDC2214-Q1 4-Ch, 28-bit, automotive capacitance to digital converter
Simulation model

FDC2214 IBIS MODEL

SLAM255.ZIP (26 KB) - IBIS Model
Reference designs

TIDA-00466 — Noise-immune Capacitive Proximity Sensor System Reference Design

The FDC2214 proximity and capacitive sensing design demonstrates the use of TI's capacitive sensing technology to sense and detect the presence of various objects. The design is a complete hardware and firmware solution. The firmware  processes the data from one proximity sensor and two (...)
Schematic: PDF
Reference designs

TIDA-00464 — High Temperature Touch through Glass Reference Design

Human machine interface (HMI) is an essential part of process plants since it is one of the major ways through which humans and machines interact.  This reference design offers an HMI solution for harsh and hazardous area applications. In process plants, operators need to interact with an (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01465 — Capacitive Frost or Ice Detection Reference Design, Resolution of <1mm, Temperature Drift <0.25%

Frost and ice buildup on cooling bodies and evaporators can significantly decrease system energy efficiency in many appliance applications such as refrigerators, air conditioners, and freezers. This sensor reference design helps to achieve the more stringent energy efficiency requirements of (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
WQFN (RGH) 16 Ultra Librarian

Ordering & quality

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