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AFE para sensores inductivos

LDC3114-Q1

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Convertidor inductivo a digital de 4 canales para la detección de proximidad y pulsadores de baja po

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LDC3114-Q1

ACTIVO
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Detalles del producto

Applications Encoders/event counters, Inductive touch buttons, Metal proximity detection Number of input channels 4 Vs (max) (V) 1.89 Vs (min) (V) 1.71 Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
Applications Encoders/event counters, Inductive touch buttons, Metal proximity detection Number of input channels 4 Vs (max) (V) 1.89 Vs (min) (V) 1.71 Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
TSSOP (PW) 16 32 mm² 5 x 6.4
  • 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
  • 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

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.

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.

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Documentación técnica

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* Data sheet LDC3114-Q1 4-Channel Hybrid Inductive Touch and Inductance to Digital Converter datasheet (Rev. B) PDF | HTML 21 dic 2021
Application note Automotive Door Handle Design with Position Sensors PDF | HTML 10 abr 2024
Application brief Automotive Door Handle Module Using Hall, Inductive and Capacitive Sensors PDF | HTML 29 nov 2023
Application note Capacitive, Inductive, and Hall Sensing for HMI in Automotive Applications (Rev. A) PDF | HTML 09 may 2023
Application note Inductive Touch System Design Guide for HMI Button Applications (Rev. A) PDF | HTML 13 feb 2023
Application brief Using Hall-Effect and Inductive Sensors in Automotive HMI Applications PDF | HTML 10 oct 2022
Application note Electromagnetic Interference Testing Using the LDC3114 PDF | HTML 07 jun 2022
EVM User's guide BOOST-LDC3114 Evaluation Module User's Guide (Rev. B) PDF | HTML 25 abr 2022
Application note Design Considerations for Inductive Touch Buttons for Human-to-Machine Interface (Rev. B) PDF | HTML 12 abr 2022
Application note Replacing Mechanical Switches With Inductive Sensors PDF | HTML 08 abr 2022
User guide 3D Attachments for the BOOST-LDC3114EVM PDF | HTML 28 ene 2022
Application note Inductive Sensing for LDC3114 Metal Proximity Detection PDF | HTML 06 ago 2021
Application note Inductive Touch – Configuring LDC2114 and LDC3114 Touch-Button Sensitivity (Rev. B) PDF | HTML 28 jul 2021
Application note LDC211x and LDC3114 Internal Algorithm Functionality (Rev. A) PDF | HTML 01 jul 2021
Application note Common Inductive and Capacitive Sensing Applications (Rev. B) PDF | HTML 22 jun 2021
Application brief Inductive Touch Buttons for Wearables (Rev. A) 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 LDC Device Selection Guide (Rev. D) PDF | HTML 15 jun 2021
Application note Sensor Design for Inductive Sensing Applications Using LDC (Rev. C) PDF | HTML 21 may 2021
Application note LDC Target Design (Rev. B) PDF | HTML 13 may 2021
Functional safety information LDC3114-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 08 abr 2021
Application note EMI Considerations for Inductive Sensing 22 feb 2017
Technical article Inductive sensing: target size matters PDF | HTML 16 nov 2015
Technical article Inductive sensing: Meet the new multichannel LDCs PDF | HTML 27 abr 2015

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

BOOST-LDC3114EVM — Módulo de evaluación LDC3114 para detección inductiva

Este módulo de evaluación (EVM) es una plataforma fácil de usar para evaluar las funciones principales y el rendimiento de LDC3114. El EVM incluye una interfaz gráfica de usuario (GUI) para leer y escribir registros, así como para ver y guardar los resultados de las mediciones. También se incluye (...)

Guía del usuario: PDF | HTML
No disponible en TI.com
Placa de evaluación

LDC-HALL-HMI-EVM — Módulo de evaluación para el diseño de interfaces de usuario táctiles inductivas y de marcación magn

Este módulo de evaluación (EVM) utiliza tecnologías de detección inductiva y de efecto Hall para proporcionar una interfaz hombre-máquina. Los dispositivos de detección inductiva crean ocho botones táctiles diferentes en una superficie uniforme, mientras que el sensor de efecto Hall se utiliza (...)
Guía del usuario: PDF | HTML
No disponible en TI.com
Modelo de simulación

LDC3114 in Raw Data Mode PSpice Model

SNOM776.ZIP (605 KB) - PSpice Model
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Diseños de referencia

TIDA-060039 — Diseño de referencia de interfaz de usuario sin contacto táctil inductiva y de marcación magnética

Este diseño de referencia utiliza tecnologías de detección inductiva y de efecto Hall para proporcionar una interfaz hombre-máquina. Los dispositivos de detección inductiva crean ocho botones táctiles diferentes en una superficie uniforme, mientras que el sensor de efecto Hall se utiliza para crear (...)
Design guide: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
TSSOP (PW) 16 Ultra Librarian
Se aplican los Términos y condiciones estándar de TI para los elementos de evaluación.

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

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