Product details

Applications Encoders/event counters, Inductive touch buttons, Metal proximity detection Number of input channels 2 Rating Catalog Vs (max) (V) 3.6 Vs (min) (V) 2.7 Operating temperature range (°C) -40 to 125
Applications Encoders/event counters, Inductive touch buttons, Metal proximity detection Number of input channels 2 Rating Catalog Vs (max) (V) 3.6 Vs (min) (V) 2.7 Operating temperature range (°C) -40 to 125
WSON (DNT) 12 16 mm² (4 mm × 4 mm)
  • Easy-to-Use – Minimal Configuration Required
  • Up to 4 Channels With Matched Sensor Drive
  • Multiple Channels Support Environmental and Aging Compensation
  • Remote Sensor Position of >20 cm Supports Operation In Harsh Environments
  • Pin-Compatible Medium and High-Resolution Options:
    • LDC1312/4: 2/4-ch 12-Bit LDC
    • LDC1612/4: 2/4-ch 28-Bit LDC
  • Sensing Range Beyond Two Coil Diameters
  • Supports Wide Sensor Frequency Range of 1 kHz to 10 MHz
  • Power Consumption:
    • 35 µA Low Power Sleep Mode
    • 200 nA Shutdown Mode
  • 2.7 V to 3.6 V Operation
  • Multiple Reference Clocking Options:
    • Included Internal Clock For Lower System Cost
    • Support for 40 MHz External Clock For Higher System performance
  • Immunity to DC Magnetic Fields and Magnets
  • Easy-to-Use – Minimal Configuration Required
  • Up to 4 Channels With Matched Sensor Drive
  • Multiple Channels Support Environmental and Aging Compensation
  • Remote Sensor Position of >20 cm Supports Operation In Harsh Environments
  • Pin-Compatible Medium and High-Resolution Options:
    • LDC1312/4: 2/4-ch 12-Bit LDC
    • LDC1612/4: 2/4-ch 28-Bit LDC
  • Sensing Range Beyond Two Coil Diameters
  • Supports Wide Sensor Frequency Range of 1 kHz to 10 MHz
  • Power Consumption:
    • 35 µA Low Power Sleep Mode
    • 200 nA Shutdown Mode
  • 2.7 V to 3.6 V Operation
  • Multiple Reference Clocking Options:
    • Included Internal Clock For Lower System Cost
    • Support for 40 MHz External Clock For Higher System performance
  • Immunity to DC Magnetic Fields and Magnets

The LDC1612 and LDC1614 are 2- and 4-channel, 28-bit inductance to digital converters (LDCs) for inductive sensing solutions. With multiple channels and support for remote sensing, the LDC1612 and LDC1614 enable the performance and reliability benefits of inductive sensing to be realized at minimal cost and power. The products are easy to use, only requiring that the sensor frequency be within 1 kHz and 10 MHz to begin sensing. The wide 1 kHz to 10 MHz sensor frequency range also enables use of very small PCB coils, further reducing sensing solution cost and size.

The high resolution channels allow for a much larger sensing range, maintaining good performance beyond two coil diameters. Well-matched channels allow for differential and ratiometric measurements, which enable designers to use one channel to compensate their sensing for environmental and aging conditions such as temperature, humidity, and mechanical drift.

Given their ease of use, low power, and low system cost these products enable designers to greatly improve performance, reliability, and flexibility over existing sensing solutions and to introduce brand new sensing capabilities to products in all markets, especially consumer and industrial applications.

These devices are easily configured via an I2C interface. The two-channel LDC1612 is available in a WSON-12 package and the four-channel LDC1614 is available in a WQFN-16 package.

The LDC1612 and LDC1614 are 2- and 4-channel, 28-bit inductance to digital converters (LDCs) for inductive sensing solutions. With multiple channels and support for remote sensing, the LDC1612 and LDC1614 enable the performance and reliability benefits of inductive sensing to be realized at minimal cost and power. The products are easy to use, only requiring that the sensor frequency be within 1 kHz and 10 MHz to begin sensing. The wide 1 kHz to 10 MHz sensor frequency range also enables use of very small PCB coils, further reducing sensing solution cost and size.

The high resolution channels allow for a much larger sensing range, maintaining good performance beyond two coil diameters. Well-matched channels allow for differential and ratiometric measurements, which enable designers to use one channel to compensate their sensing for environmental and aging conditions such as temperature, humidity, and mechanical drift.

Given their ease of use, low power, and low system cost these products enable designers to greatly improve performance, reliability, and flexibility over existing sensing solutions and to introduce brand new sensing capabilities to products in all markets, especially consumer and industrial applications.

These devices are easily configured via an I2C interface. The two-channel LDC1612 is available in a WSON-12 package and the four-channel LDC1614 is available in a WQFN-16 package.

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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet LDC1612, LDC1614 Multi-Channel 28-Bit Inductance to Digital Converter (LDC) for Inductive Sensing datasheet (Rev. A) PDF | HTML Mar 25, 2018
Application note Common Inductive and Capacitive Sensing Applications (Rev. B) PDF | HTML Jun 22, 2021
Application note Simulate Inductive Sensors Using FEMM (Finite Element Method Magnetics) (Rev. A) PDF | HTML Jun 16, 2021
Application note LDC Device Selection Guide (Rev. D) PDF | HTML Jun 15, 2021
Application note Sensor Design for Inductive Sensing Applications Using LDC (Rev. C) PDF | HTML May 21, 2021
Application note LDC Target Design (Rev. B) PDF | HTML May 13, 2021
Application note LDC1612 LDC1614 Linear Position Sensing (Rev. A) Nov 13, 2019
Application note Configuring Inductive-to-Digital-Converters for Parallel Resistance (RP) Variati (Rev. B) Nov 11, 2019
Application note EMI Considerations for Inductive Sensing Feb 22, 2017
Technical article How you can use the LDC racetrack inductor designer tool PDF | HTML Nov 29, 2016
Technical article How to use the LDC calculations tool PDF | HTML Nov 10, 2016
Application note LDC1312, LDC1314, LDC1612, LDC1614 Sensor Status Monitoring Oct 9, 2016
Technical article Did you know inductive proximity sensing can be implemented with a single chip? PDF | HTML Apr 25, 2016
Application note Setting LDC1312/4, LDC1612/4, and LDC1101 Sensor Drive Configuration PDF | HTML Apr 5, 2016
Application note Inductive Sensing Touch-On-Metal Buttons Design Guide PDF | HTML Mar 30, 2016
Technical article Inductive sensing: setting the sensor current-drive without a fancy impedance anal PDF | HTML Mar 24, 2016
Application note Power Reduction Techniques for the LDC131x/161x for Inductive Sensing PDF | HTML Mar 18, 2016
Technical article Inductive sensing: Are narrow-band LC sensors immune to DC magnetic fields? PDF | HTML Mar 14, 2016
Application note Optimizing L Measurement Resolution for the LDC161x and LDC1101 PDF | HTML Feb 12, 2016
Technical article Inductive sensing: rethink the button PDF | HTML Dec 16, 2015
Technical article Inductive sensing: target size matters PDF | HTML Nov 16, 2015
Application note Measuring Rp of an L-C Sensor for Inductive Sensing Oct 1, 2015
Technical article Inductive sensing: How to design an inductive sensor with the new WEBENCH Coil Des PDF | HTML Aug 19, 2015
Technical article Inductive sensing: How to sense spring compression PDF | HTML Jul 13, 2015
Technical article Inductive sensing: Improve the ENOB of a multichannel LDC by 4 bits in 3 simple st PDF | HTML Jun 24, 2015
Technical article Inductive sensing: How far can I sense? PDF | HTML Jun 17, 2015
User guide LDC Reference Coils User’s Guide May 14, 2015
Technical article Inductive sensing: How to configure a multichannel LDC system - part 2 PDF | HTML May 11, 2015
Technical article Inductive sensing: How to configure a multichannel LDC system - part 1 PDF | HTML May 4, 2015
Technical article Inductive sensing: Meet the new multichannel LDCs PDF | HTML Apr 27, 2015

Design & development

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

Evaluation board

LDC1612EVM — LDC1612 Evaluation Module for Inductance to Digital Converter with Sample PCB Coils

The LDC1612 Evaluation Module demonstrates the use of inductive sensing technology to sense and measure the presence, position or composition of a conductive target object. The module includes two example PCB sensor coils that connect to the two channels of the LDC1612. An MSP430 (...)

User guide: PDF | HTML
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Evaluation board

LDCCOILEVM — Reference Coil Board Evaluation Module

The LDCCOILEVM is designed to provide maximum flexibility for system prototyping and allow for experimentation with different coil sizes. It includes 19 unique types of PCB coils that range from long rectangular asymmetric coils to small circular coils 3mm in diameter. Every coil is separated by (...)

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Firmware

SNOC027 — MSP430 Firmware Source Code for Multichannel LDC

Supported products & hardware
GUI for evaluation module (EVM)

SNOC028 — Sensing Solutions EVM GUI Tool v1.10.0

Supported products & hardware
Simulation model

LDC1612 IBIS MODEL

SNIM002.ZIP (26 KB) - IBIS model
Supported products & hardware
Calculation tool

LDC-CALCULATOR-TOOLS — Inductive Sensing Design Calculator Tool

The inductive sensing calculator tools provide two Excel spreadsheets to assist in the design process for inductive-to-digital converter (LDC) devices. These tools provide coil design assistance as well as some device-specific configurations.

Supported products & hardware
Reference design

TIDA-00314 — Touch on Metal Buttons With Integrated Haptic Feedback Reference Design

This reference design uses our inductance-to-digital converter technology to provide a high-precision method to sense button presses on a metal surface and our haptic drivers provide high-quality haptics feedback to the user. TIDA-00314 demonstrates techniques for system design, environmental (...)

Supported products & hardware
Reference design

TIDA-00508 — 1-Degree Dial Reference Design Using the LDC1314 Inductance-to-Digital Converter

The LDC1314's unique inductive sensing capability is used to implement a contactless rotational position sensing solution that is accurate to 1 degree. It uses standard PCB technology and easily manufactured components to implement a low cost solution.

This reference design uses the LDC1314.  (...)

Supported products & hardware
Reference design

TIDA-00509 — 16-button Inductive Keypad Reference Design Using the LDC1314 Inductance-to-Digital Converter

The LDC1314's unique inductive sensing capability is used to implement a contactless, 16 button, multi-function keypad. It uses standard PCB technology and easily manufactured components to implement a low cost solution.

This reference design uses the LDC1314.  This reference design can also be (...)

Supported products & hardware
Reference design

TIDM-INDUCTIVELINEAR — ESI + LDC Inductive Linear Position Sensing Reference Design

Typical implementations of linear position measurements use expensive rare-earth magnets. To lower the overall system cost, this reference design describes the implementation of using the industry’s first inductance-to-digital converters (LDC) from TI for linear position sensing without the (...)
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
WSON (DNT) 12 Ultra Librarian

Ordering & quality

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