NEW

LDC3114-Q1

PREVIEW

Automotive 4-channel inductance to digital converter for low-power proximity & touch-button sensing

Top

Product details

Parameters

Applications Inductive touch buttons, Encoders/event counters, Metal proximity detection Number of input channels 4 Vs (Max) (V) 1.89 Vs (Min) (V) 1.71 Operating temperature range (C) -40 to 125 TI functional safety category Functional Safety-Capable open-in-new Find other Inductive sensor AFEs

Package | Pins | Size

TSSOP (PW) 16 open-in-new Find other Inductive sensor AFEs

Features

  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Functional Safety-Capable
  • Multiple modes of operation:
    • Raw data mode: access pre-processed inductance measurement data to enable advanced algorithms on MCU for linear sensing
    • Button mode: button press detection with baseline tracking and advanced on-chip post processing
    • Force level measurement of touch buttons
  • Pin and register compatible to LDC2114
  • Robust EMI performance allows for CISPR 22 and CISPR 24 compliance
  • Four independent channel operation
  • Configurable scan rates:
    • 0.625 SPS to 160 SPS
    • Continuous scanning option
  • Advanced button press detection algorithms:
    • Adjustable force threshold per button
    • Environmental shift compensation
    • Simultaneous button press detection
  • Low current consumption:
    • One button: 6 µA at 0.625 SPS
    • Two buttons: 72 µA at 20 SPS
  • Interface:
    • 1.8-V and 3.3-V compliant I2C and INTB
    • 1.8-V logic output per channel for buttons

All trademarks are the property of their respective owners.

open-in-new Find other Inductive sensor AFEs

Description

The LDC3114-Q1 is an inductive sensing device that enables touch button design for human machine interface (HMI) on a wide variety of materials by measuring small deflections of conductive targets using a coil that can be implemented on a small printed circuit board (PCB) located behind the panel. This technology can be used for precise linear position sensing of metal targets for automotive, consumer and industrial applications by allowing access to the raw data representing the inductance value. Inductive sensing solution is insensitive to humidity or non-conductive contaminants such as oil and dirt.

The button mode of LDC3114-Q1 is able to automatically correct for any deformation in the conductive targets. The LDC3114-Q1 offers well-matched channels, which allow for differential and ratiometric measurements which enable compensation of environmental and aging conditions such as temperature and mechanical drift. The LDC3114-Q1 includes an ultra-low power mode intended for power on/off buttons or position sensors in battery powered applications.

The LDC3114-Q1 is easily configured through an I2C interface. The LDC3114-Q1 is available in a 16-pin TSSOP package.

open-in-new Find other Inductive sensor AFEs
Download

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 3
Type Title Date
* Data sheet LDC3114-Q1 4-Channel Hybrid Inductive Touch and Inductance to Digital Converter datasheet Apr. 13, 2021
Functional safety information LDC3114-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA Apr. 08, 2021
User guide BOOST-LDC3114EVM User's Guide Feb. 05, 2021

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
99
Description

This EVM (evaluation module) is an easy-to-use platform for evaluating the main features and performance of the LDC3114. The EVM includes a graphical user interface (GUI) used to read and write registers as well as view and save measurement results. Also included is an integrated coil that can check (...)

Features
  • Integrated coil for quick evaluation
  • GUI provided for quick and easy evaluation         

CAD/CAE symbols

Package Pins Download
TSSOP (PW) 16 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos