Product details

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VSSOP (DGS) 10 9 mm² 3 x 3
  • Qualified for Automotive Applications
  • 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
  • Qualified for Automotive Applications
  • 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

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 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.

The FDC1004Q 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 FDC1004Q allows for use in space-constrained applications. The FDC1004Q is available in a 10-pin VSSOP package, which allows for optical inspection in production, 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 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.

The FDC1004Q 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 FDC1004Q allows for use in space-constrained applications. The FDC1004Q is available in a 10-pin VSSOP package, which allows for optical inspection in production, 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 FDC1004Q 4-Channel Capacitance-to-Digital Converter for Capacitive Sensing Solutions datasheet 30 Apr 2015
Application note FDC1004: Basics of Capacitive Sensing and Applications (Rev. A) 23 Jun 2021
Application note Common Inductive and Capacitive Sensing Applications (Rev. B) 22 Jun 2021
Application note Simulate Inductive Sensors Using FEMM (Finite Element Method Magnetics) (Rev. A) 16 Jun 2021
Application note How to Calibrate FDC1004 for Liquid Level Sensing Applications 24 Oct 2016
Application note Capacitive Sensing: Direct vs Remote Liquid Level Sensing Performance Analysis (Rev. A) 24 Jul 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
User guide FDC1004-Q1 EVM User Guide 31 Mar 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
Technical article Get Connected: A new blog series 10 Jan 2014

Design & development

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Evaluation board

FDC1004QEVM — Automotive 4-Channel Capacitive to Digital Converter Evaluation Module

The FDC1004Q evaluation module is used to evaluate the FDC1004-Q1, automotive 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-Q1, and two sensor (...)

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GUI for evaluation module (EVM)

Sensing Solutions EVM GUI Tool v1.10.0 (Rev. F)

SNOC028F.ZIP (61513 KB)
Simulation model

FDC1004Q1 IBIS MODEL

SNAM170.ZIP (12 KB) - IBIS Model
Package Pins Download
VSSOP (DGS) 10 View options

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