SNOSCZ9A May   2016  – October 2024 FDC2112-Q1 , FDC2114-Q1 , FDC2212-Q1 , FDC2214-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Timing Requirements
    7. 5.7 Switching Characteristics - I2C
    8. 5.8 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagrams
    3. 6.3 Feature Description
      1. 6.3.1 Clocking Architecture
      2. 6.3.2 Multi-Channel and Single-Channel Operation
      3. 6.3.3 Current Drive Control Registers
      4. 6.3.4 Device Status Registers
      5. 6.3.5 Input Deglitch Filter
    4. 6.4 Device Functional Modes
      1. 6.4.1 Start-Up Mode
      2. 6.4.2 Normal (Conversion) Mode
      3. 6.4.3 Sleep Mode
      4. 6.4.4 Shutdown Mode
        1. 6.4.4.1 Reset
    5. 6.5 Programming
      1. 6.5.1 I2C Interface Specifications
    6. 6.6 Register Maps
      1. 6.6.1  Register List
      2. 6.6.2  Address 0x00, DATA_CH0
      3. 6.6.3  Address 0x01, DATA_LSB_CH0 (FDC2212 / FDC2214 only)
      4. 6.6.4  Address 0x02, DATA_CH1
      5. 6.6.5  Address 0x03, DATA_LSB_CH1 (FDC2212 / FDC2214 only)
      6. 6.6.6  Address 0x04, DATA_CH2 (FDC2114, FDC2214 only)
      7. 6.6.7  Address 0x05, DATA_LSB_CH2 (FDC2214 only)
      8. 6.6.8  Address 0x06, DATA_CH3 (FDC2114, FDC2214 only)
      9. 6.6.9  Address 0x07, DATA_LSB_CH3 (FDC2214 only)
      10. 6.6.10 Address 0x08, RCOUNT_CH0
      11. 6.6.11 Address 0x09, RCOUNT_CH1
      12. 6.6.12 Address 0x0A, RCOUNT_CH2 (FDC2114, FDC2214 only)
      13. 6.6.13 Address 0x0B, RCOUNT_CH3 (FDC2114, FDC2214 only)
      14. 6.6.14 Address 0x0C, OFFSET_CH0 (FDC21112 / FDC2114 only)
      15. 6.6.15 Address 0x0D, OFFSET_CH1 (FDC21112 / FDC2114 only)
      16. 6.6.16 Address 0x0E, OFFSET_CH2 (FDC2114 only)
      17. 6.6.17 Address 0x0F, OFFSET_CH3 (FDC2114 only)
      18. 6.6.18 Address 0x10, SETTLECOUNT_CH0
      19. 6.6.19 Address 0x11, SETTLECOUNT_CH1
      20. 6.6.20 Address 0x12, SETTLECOUNT_CH2 (FDC2114, FDC2214 only)
      21. 6.6.21 Address 0x13, SETTLECOUNT_CH3 (FDC2114, FDC2214 only)
      22. 6.6.22 Address 0x14, CLOCK_DIVIDERS_CH0
      23. 6.6.23 Address 0x15, CLOCK_DIVIDERS_CH1
      24. 6.6.24 Address 0x16, CLOCK_DIVIDERS_CH2 (FDC2114, FDC2214 only)
      25. 6.6.25 Address 0x17, CLOCK_DIVIDERS_CH3 (FDC2114, FDC2214 only)
      26. 6.6.26 Address 0x18, STATUS
      27. 6.6.27 Address 0x19, ERROR_CONFIG
      28. 6.6.28 Address 0x1A, CONFIG
      29. 6.6.29 Address 0x1B, MUX_CONFIG
      30. 6.6.30 Address 0x1C, RESET_DEV
      31. 6.6.31 Address 0x1E, DRIVE_CURRENT_CH0
      32. 6.6.32 Address 0x1F, DRIVE_CURRENT_CH1
      33. 6.6.33 Address 0x20, DRIVE_CURRENT_CH2 (FDC2114 / FDC2214 only)
      34. 6.6.34 Address 0x21, DRIVE_CURRENT_CH3 (FDC2114 / FDC2214 only)
      35. 6.6.35 Address 0x7E, MANUFACTURER_ID
      36. 6.6.36 Address 0x7F, DEVICE_ID
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Sensor Configuration
      2. 7.1.2 Shield
      3. 7.1.3 Power-Cycled Applications
      4. 7.1.4 Inductor Self-Resonant Frequency
      5. 7.1.5 Application Curves for Proximity Sensing
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Recommended Initial Register Configuration Values
      3. 7.2.3 Application Curve
    3. 7.3 Best Design Practices
    4. 7.4 Power Supply Recommendations
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
      2. 7.5.2 Layout Examples
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

3 Description

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

The main challenge limiting sensitivity in capacitive sensing applications is noise susceptibility of the sensors. With the FDC2x1x-Q1 resonant sensing architecture, performance can be maintained even in presence of fluorescent light.

The FDC2x1x-Q1 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 noise while providing high resolution at high speed. The devices support a wide excitation frequency range, offering flexibility in system design.

Package Information
PART NUMBERPACKAGE(1)PACKAGE SIZE(2)
FDC2112-Q1DNT (WSON, 12)4mm × 4mm
FDC2114-Q1RGH (WQFN, 16)4mm × 4mm
FDC2212-Q1DNT (WSON, 12)4mm × 4mm
FDC2214-Q1RGH (WQFN, 16)4mm × 4mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
(2) The package size (length × width) is a nominal value and includes pins, where applicable.
FDC2112-Q1 FDC2114-Q1 FDC2212-Q1 FDC2214-Q1 Simplified SchematicSimplified Schematic