LDC2112

ACTIVO

Convertidor inductivo a digital de 2 canales con seguimiento de línea base para botones táctiles de

Detalles del producto

Applications Inductive touch buttons Number of input channels 2 Rating Catalog Vs (max) (V) 1.89 Vs (min) (V) 1.71 Operating temperature range (°C) -40 to 85
Applications Inductive touch buttons Number of input channels 2 Rating Catalog Vs (max) (V) 1.89 Vs (min) (V) 1.71 Operating temperature range (°C) -40 to 85
DSBGA (YFD) 16 3.24 mm² (0 mm × 0 mm) TSSOP (PW) 16 32 mm² (5 mm × 6.4 mm)
  • Low Power Consumption:
    • One Button: 6 µA at 0.625 SPS
    • Two Buttons: 72 µA at 20 SPS
  • Configurable Button Scan Rates:
    • 0.625 SPS to 80 SPS
  • Force Level Measurement of Touch Buttons
  • Independent Channel Operation:
    • Two Channels for LDC2112
    • Four Channels for LDC2114
  • Integrated Algorithms to Enable:
    • Adjustable Force Threshold per Button
    • Environmental Shift Compensation
    • Simultaneous Button Press Detection
  • Supports Independent Operation without MCU
  • Robust EMI Performance:
    • Allows for CISPR 22 and CISPR 24 Compliance
  • Operating Voltage Range: 1.8 V ± 5%
  • Temperature Range: –40 °C to +85 °C
  • Interface:
    • I2C
    • Dedicated Logic Output per Channel
  • Low Power Consumption:
    • One Button: 6 µA at 0.625 SPS
    • Two Buttons: 72 µA at 20 SPS
  • Configurable Button Scan Rates:
    • 0.625 SPS to 80 SPS
  • Force Level Measurement of Touch Buttons
  • Independent Channel Operation:
    • Two Channels for LDC2112
    • Four Channels for LDC2114
  • Integrated Algorithms to Enable:
    • Adjustable Force Threshold per Button
    • Environmental Shift Compensation
    • Simultaneous Button Press Detection
  • Supports Independent Operation without MCU
  • Robust EMI Performance:
    • Allows for CISPR 22 and CISPR 24 Compliance
  • Operating Voltage Range: 1.8 V ± 5%
  • Temperature Range: –40 °C to +85 °C
  • Interface:
    • I2C
    • Dedicated Logic Output per Channel

Inductive sensing technology enables touch button design for human machine interface (HMI) on a wide variety of materials such as metal, glass, plastic, and wood, by measuring small deflections of conductive targets. The sensor for an inductive touch system is a coil that can be implemented on a small PCB located behind the panel and protected from the environment. Inductive sensing solution is insensitive to humidity or non-conductive contaminants such as oil and dirt. It is able to automatically correct for any deformation in the conductive targets.

The LDC2112/LDC2114 is a multi-channel low-noise inductance to digital converter with integrated algorithms to implement inductive touch applications. The device employs an innovative LC resonator that offers high rejection of noise and interference. The LDC2112/LDC2114 can reliably detect material deflections of less than 200 nm.

The LDC2112/LDC2114 includes an ultra-low power mode intended for power on/off buttons in battery powered applications.

The LDC2112/LDC2114 is available in a 16-pin DSBGA or TSSOP package. The 0.4 mm pitch DSBGA package has a very small 1.6 × 1.6 mm nominal body size with a maximum height of 0.4 mm. The 0.65 mm pitch TSSOP package has a 5.0 × 4.4 mm nominal body size with a maximum height of 1.2 mm.

Inductive sensing technology enables touch button design for human machine interface (HMI) on a wide variety of materials such as metal, glass, plastic, and wood, by measuring small deflections of conductive targets. The sensor for an inductive touch system is a coil that can be implemented on a small PCB located behind the panel and protected from the environment. Inductive sensing solution is insensitive to humidity or non-conductive contaminants such as oil and dirt. It is able to automatically correct for any deformation in the conductive targets.

The LDC2112/LDC2114 is a multi-channel low-noise inductance to digital converter with integrated algorithms to implement inductive touch applications. The device employs an innovative LC resonator that offers high rejection of noise and interference. The LDC2112/LDC2114 can reliably detect material deflections of less than 200 nm.

The LDC2112/LDC2114 includes an ultra-low power mode intended for power on/off buttons in battery powered applications.

The LDC2112/LDC2114 is available in a 16-pin DSBGA or TSSOP package. The 0.4 mm pitch DSBGA package has a very small 1.6 × 1.6 mm nominal body size with a maximum height of 0.4 mm. The 0.65 mm pitch TSSOP package has a 5.0 × 4.4 mm nominal body size with a maximum height of 1.2 mm.

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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos LDC2112, LDC2114 Inductive Touch Solution for Low-Power HMI Button Applications datasheet (Rev. B) PDF | HTML 4/04/2017
Nota sobre la aplicación Inductive Touch System Design Guide for HMI Button Applications (Rev. A) PDF | HTML 13/02/2023
Nota sobre la aplicación Design Considerations for Inductive Touch Buttons for Human-to-Machine Interface (Rev. B) PDF | HTML 12/04/2022
Nota sobre la aplicación Inductive Touch – Configuring LDC2114 and LDC3114 Touch-Button Sensitivity (Rev. B) PDF | HTML 28/07/2021
Nota sobre la aplicación LDC211x and LDC3114 Internal Algorithm Functionality (Rev. A) PDF | HTML 1/07/2021
Nota sobre la aplicación Common Inductive and Capacitive Sensing Applications (Rev. B) PDF | HTML 22/06/2021
Application brief Inductive Touch Buttons for Wearables (Rev. A) PDF | HTML 22/06/2021
Nota sobre la aplicación Simulate Inductive Sensors Using FEMM (Finite Element Method Magnetics) (Rev. A) PDF | HTML 16/06/2021
Nota sobre la aplicación LDC Device Selection Guide (Rev. D) PDF | HTML 15/06/2021
Nota sobre la aplicación Sensor Design for Inductive Sensing Applications Using LDC (Rev. C) PDF | HTML 21/05/2021
Nota sobre la aplicación LDC Target Design (Rev. B) PDF | HTML 13/05/2021
Nota sobre la aplicación EMI Considerations for Inductive Sensing 22/02/2017
Guía del usuario LDC2114 Evaluation Module for Inductive Touch Inductance to Digital Converter 14/12/2016
Artículo técnico How to use the LDC calculations tool PDF | HTML 10/11/2016
Artículo técnico Inductive sensing: target size matters PDF | HTML 16/11/2015
Nota sobre la aplicación Measuring Rp of an L-C Sensor for Inductive Sensing 1/10/2015
Artículo técnico Inductive sensing: Meet the new multichannel LDCs PDF | HTML 27/04/2015

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

LDC2114EVM — Módulo de evaluación táctil inductivo de 4 canales y 1.8 V LDC2114

El LDC2114EVM (módulo de evaluación) demuestra el uso de la detección inductiva para detectar la pulsación de un botón en una pieza de metal monolítica. El EVM puede conectar hasta 4 botones mediante el LDCTOUCHCOMCOILEVM o bobinas personalizadas diseñadas a través de Webench. Las pulsaciones de (...)
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En inventario
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Placa de evaluación

LDCTOUCHCOMCOILEVM — Placa de evaluación de bobina de sensor táctil inductivo

The LDCTOUCHCOMCOILEVM is designed to provide maximum flexibility for system prototyping in inductive touch applications and allows experimentation with different coil sizes.  It includes 5 sets of different sized PCB coils with integrated spacers & perforations such that the coils can be (...)
Guía del usuario: PDF
Productos y hardware compatibles
En inventario
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GUI para el módulo de evaluación (EVM)

SNOC028 — Sensing Solutions EVM GUI Tool v1.10.0

Productos y hardware compatibles
Modelo de simulación

LDC2112 IBIS Model

SNOM612.ZIP (27 KB) - Modelo IBIS
Productos y hardware compatibles
Herramienta de cálculo

LDC-CALCULATOR-TOOLS — Inductive Sensing Design Calculator Tool

Las herramientas de calculadora de detección inductiva proporcionan dos hojas de cálculo Excel para ayudar en el proceso de diseño de dispositivos convertidores de inductivo a digital (LDC). Estas herramientas proporcionan asistencia en el diseño de bobinas, así como algunas configuraciones (...)

Productos y hardware compatibles
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
DSBGA (YFD) 16 Ultra Librarian
TSSOP (PW) 16 Ultra Librarian

Pedidos y calidad

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Soporte y capacitación

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