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FDC1004

ACTIVE

4-channel 16-bit capacitance-to-digital converter with active shield driver for EMC protection

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Data sheet

FDC1004

ACTIVE
Data sheet Order now

Product details

Number of input channels 4 Features Integrated shield drivers Operating temperature range (°C) -40 to 125 Vs (min) (V) 3 Vs (max) (V) 3.6 Interface type I2C Resolution (Bits) 24 Rating Catalog
Number of input channels 4 Features Integrated shield drivers Operating temperature range (°C) -40 to 125 Vs (min) (V) 3 Vs (max) (V) 3.6 Interface type I2C Resolution (Bits) 24 Rating Catalog
VSSOP (DGS) 10 14.7 mm² 3 x 4.9 WSON (DSC) 10 9 mm² 3 x 3
  • Input range: ±15pF
  • Measurement resolution: 0.5fF
  • Maximum offset capacitance: 100pF
  • Programmable output rates: 100/200/400 S/s
  • Maximum shield load: 400pF
  • Supply voltage: 3.3V
  • Temp range: –40° to 125°C
  • Current consumption:
    • Active: 750µA
    • Standby: 29µA
  • Interface: I2C
  • Number of channels: 4
  • Input range: ±15pF
  • Measurement resolution: 0.5fF
  • Maximum offset capacitance: 100pF
  • Programmable output rates: 100/200/400 S/s
  • Maximum shield load: 400pF
  • Supply voltage: 3.3V
  • Temp range: –40° to 125°C
  • Current consumption:
    • Active: 750µA
    • Standby: 29µA
  • Interface: I2C
  • Number of channels: 4

Capacitive sensing with grounded capacitor sensors is a very low-power, low-cost, high-resolution contact-less 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 ±15pF and can handle a sensor offset capacitance of up to 100pF, 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.

The FDC1004 also includes shield drivers for sensor shields, which can reduce EMI interference and help focus the sensing direction of a capacitive sensor. The small footprint of the FDC1004 allows for use in space-constrained applications. The FDC1004 is available in a 10-pin WSON and VSSOP package and features an I2C interface for interfacing to an MCU.

Capacitive sensing with grounded capacitor sensors is a very low-power, low-cost, high-resolution contact-less 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 ±15pF and can handle a sensor offset capacitance of up to 100pF, 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.

The FDC1004 also includes shield drivers for sensor shields, which can reduce EMI interference and help focus the sensing direction of a capacitive sensor. The small footprint of the FDC1004 allows for use in space-constrained applications. The FDC1004 is available in a 10-pin WSON and VSSOP package and features an I2C interface for interfacing to an MCU.
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Technical documentation

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Type Title Date
* Data sheet FDC1004 4-Channel Capacitance-to-Digital Converter for Capacitive Sensing Applications datasheet (Rev. C) PDF | HTML 10 Oct 2024
User guide Input Resistance Error for Current Sense Amplifiers PDF | HTML 12 Jul 2024
Application note FDC1004: Basics of Capacitive Sensing and Applications (Rev. A) 23 Jun 2021
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
Application note How to Calibrate FDC1004 for Liquid Level Sensing Applications 24 Oct 2016
User guide FDC1004 User's Guide (Rev. C) PDF | HTML 20 Oct 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
Application note Capacitive Sensing: Direct vs Remote Liquid Level Sensing Performance Analysis (Rev. A) 24 Jul 2015
Technical article What are you sensing? A novel approach for capacitive-based liquid-level sensing PDF | HTML 25 Jun 2015
Application note Liquid Level Sensing with the Immersive Straw Approach 19 Jun 2015
Application note Capacitive Proximity Sensing Using the FDC1004 (Rev. A) 26 Apr 2015
Application note Capacitive Sensing: Ins and Outs of Active Shielding (Rev. A) 12 Feb 2015
Application note Capacitive Sensing: Out-of-Phase Liquid Level Technique 27 Jan 2015
User guide FDC1004 GUI User's Guide 27 Jun 2014

Design & development

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

Evaluation board

FDC1004EVM — FDC1004EVM - 4 Channel Capacitive to Digital Converter Evaluation Module

The FDC1004 evaluation module is used to evaluate the FDC1004, 4-channel capacitive-to-digital converter. The evaluation modules features a breakable PCB composed of three sections: a USB to I²C converter based on the MSP430F5528 microcontroller, the FDC1004, and two sensor electrodes to (...)

User guide: PDF | HTML
Not available on TI.com
Code example or demo

SNVC187 — Capacitive Sensing Sample Code (Energia) v1.1

Supported products & hardware

Supported products & hardware

Products
Signal conditioners
FDC1004 — 4-channel 16-bit capacitance-to-digital converter with active shield driver for EMC protection
Hardware development
Evaluation board
FDC1004EVM — FDC1004EVM - 4 Channel Capacitive to Digital Converter Evaluation Module FDC1004QEVM — Automotive 4-Channel Capacitive to Digital Converter Evaluation Module
Download
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
Download
Simulation model

FDC1004 IBIS Model (Rev. A)

SNAM168A.ZIP (13 KB) - IBIS Model
Download
Reference designs

TIDA-00317 — Capacitive-Based Liquid Level Sensing Sensor Reference Design

This reference design, which uses FDC1004EVM, provides robust and accurate capacitive-based liquid level sensing. TIDA-00317 demonstrates the sensor design and configuration setup to mitigate parasitic capacitance interference from the system environment.
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00373 — Backlight and Smart Lighting Control by Ambient Light and Proximity Sensor Reference Design

This system conserves power and extends backlight life by dynamically adjusting the backlight brightness relative to the environment's ambient light.  A capacitive proximity sensor wakes up the system when a user is close to save even more power.

 

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Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00506 — Automotive Capacitive Proximity Kick to Open Detection Reference Design

This reference design showcases proximity sensitivity using our FDC1004 evaluation module (EVM) for an automotive kick-to-open application within a plastic bumper. This design also showcases test results that include exposure to mud and water on the bumper to determine the impact of common (...)
Test report: PDF
Schematic: PDF
Reference designs

TIDA-00220 — Capacitive-Based Human Proximity Detection for System Wake-Up & Interrupt Reference Design

This reference design uses our capacitive-to-digital converter technology to provide a high-precision method to wake up systems when human interaction occurs. TIDA-00220 demonstrates techniques for an alternative sensor design, environmental compensation and electromagnetic interference protection.
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
VSSOP (DGS) 10 Ultra Librarian
WSON (DSC) 10 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

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