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AFE para sensores inductivos

LDC0851

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Interruptor inductivo diferencial para aplicaciones sin MCU

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LDC0851

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Detalles del producto

Applications Encoders/event counters, Metal proximity detection Number of input channels 1 Vs (max) (V) 3.46 Vs (min) (V) 1.71 Rating Catalog Operating temperature range (°C) -40 to 125
Applications Encoders/event counters, Metal proximity detection Number of input channels 1 Vs (max) (V) 3.46 Vs (min) (V) 1.71 Rating Catalog Operating temperature range (°C) -40 to 125
WSON (DSG) 8 4 mm² 2 x 2
  • Functional Safety-Capable
  • Threshold tolerance: <1 % of coil diameter
  • Temperature stable switching operation
  • Average supply current: < 20µA at 10sps
  • Shutdown supply current: 140nA
  • Push-pull output
  • Resistor programmable threshold
  • Insensitive to DC magnetic fields
  • Contactless switching operation
  • Sample rate up to 4ksps
  • Supply voltage: 1.8V – 3.3V
  • Operating temperature range: –40 to 125 °C
  • Functional Safety-Capable
  • Threshold tolerance: <1 % of coil diameter
  • Temperature stable switching operation
  • Average supply current: < 20µA at 10sps
  • Shutdown supply current: 140nA
  • Push-pull output
  • Resistor programmable threshold
  • Insensitive to DC magnetic fields
  • Contactless switching operation
  • Sample rate up to 4ksps
  • Supply voltage: 1.8V – 3.3V
  • Operating temperature range: –40 to 125 °C

The LDC0851 is a close range inductive switch ideal for contactless, simple switch applications such as presence detection and event counting.

The switch is triggered when a conductive object comes within close proximity of the sensing coil. Hysteresis is included to ensure a reliable switching threshold. The differential implementation prevents false triggering over environmental factors such as temperature variation or humidity effects. The LDC0851 does not require an MCU to operate, allowing for a simplistic solution.

Inductive sensing technology provides reliable and accurate sensing even in the presence of dirt, oil, or moisture making it ideal for use in harsh or dirty environments. The solid state switching eliminates the failures due to reed, mechanical, or contact switching. Unlike competitive products, the LDC0851 does not require magnets, nor is it affected by DC magnetic fields.

The LDC0851 is a close range inductive switch ideal for contactless, simple switch applications such as presence detection and event counting.

The switch is triggered when a conductive object comes within close proximity of the sensing coil. Hysteresis is included to ensure a reliable switching threshold. The differential implementation prevents false triggering over environmental factors such as temperature variation or humidity effects. The LDC0851 does not require an MCU to operate, allowing for a simplistic solution.

Inductive sensing technology provides reliable and accurate sensing even in the presence of dirt, oil, or moisture making it ideal for use in harsh or dirty environments. The solid state switching eliminates the failures due to reed, mechanical, or contact switching. Unlike competitive products, the LDC0851 does not require magnets, nor is it affected by DC magnetic fields.
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Documentación técnica

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Tipo Título Fecha
* Data sheet LDC0851 Differential Inductive Switch datasheet (Rev. B) PDF | HTML 16 abr 2024
Functional safety information LDC0851 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA (Rev. A) PDF | HTML 22 feb 2024
Application note Common Inductive and Capacitive Sensing Applications (Rev. B) 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
Application note LDC0851 Quick-Start Guide (Rev. A) 07 feb 2020
Technical article Understanding tamper detection sensors PDF | HTML 18 nov 2019
Technical article An open-and-shut case, part 2: advantages of inductive-based case tamper detection PDF | HTML 29 nov 2018
Technical article An open-and-shut case, part 1: limitations of mechanical case tamper detection in PDF | HTML 15 nov 2018
Application note LDC0851 Stacked Coil Design Considerations 12 feb 2018
EVM User's guide LDC0851EVM User's Guide (Rev. A) 30 jul 2017
Application note EMI Considerations for Inductive Sensing 22 feb 2017
Technical article Inductive sensing: reliably detect faults in circuit breakers using contactless in PDF | HTML 17 ene 2017
Application note LDC0851 - Troubleshooting 03 ene 2017
Technical article Inductive sensing: make your proximity-switch applications as easy as 1, 2, 3 with PDF | HTML 13 dic 2016
Technical article How you can use the LDC racetrack inductor designer tool PDF | HTML 29 nov 2016
Technical article How to use the LDC calculations tool PDF | HTML 10 nov 2016
Technical article Inductive sensing: WEBENCH® Coil Designer now designs stacked coils for switch app PDF | HTML 17 ago 2016
Technical article Inductive sensing: How can an inductive switch be used for lid open/close detectio PDF | HTML 15 ago 2016
Technical article Inductive sensing: prototype side-by-side coils in four easy steps PDF | HTML 25 jul 2016
Technical article Inductive sensing: Switch applications made simple PDF | HTML 11 may 2016
Technical article Inductive sensing: target size matters PDF | HTML 16 nov 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

LDC0851EVM — LDC0851EVM: interruptor inductivo de alta precisión con módulo de evaluación de bobinas apiladas

The LDC0851 evaluation module demonstrates inductive sensing technology to accurately detect the presence of a conductive target passing a fixed threshold. The evaluation module includes a perforated and interchangeable 4-layer PCB where both the sensing coil and reference coil are stacted for (...)

Guía del usuario: PDF
No disponible en TI.com
Modelo de simulación

LDC0851 IBIS Model

SLYM096.ZIP (29 KB) - IBIS Model
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Herramienta de cálculo

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.

Productos y hardware compatibles

Productos y hardware compatibles

Productos
AFE para sensores inductivos
LDC0851 — Interruptor inductivo diferencial para aplicaciones sin MCU LDC1041 — Convertidor inductivo a digital monocanal, 5 V, L de 24 bits L, Rp de 8 bits LDC1051 — Convertidor inductivo a digital monocanal, 5 V, Rp de 8 bits LDC1101 — Convertidor inductivo a digital monocanal, 1.8 V, L de 24 bits, Rp de 16 bits para aplicaciones de a LDC1312 — Convertidor inductivo a digital de uso general de 2 canales y 12 bits LDC1312-Q1 — Convertidor inductivo a digital automotriz de uso general de 2 canales y 12 bits LDC1314 — Convertidor inductivo a digital de uso general de 4 canales y 12 bits LDC1314-Q1 — Convertidor inductivo a digital automotriz de uso general de 4 canales y 12 bits LDC1612 — Convertidor inductivo a digital de alta resolución, dos canales, 28 bits LDC1612-Q1 — Convertidor inductivo a digital automotriz de alta resolución, dos canales, 28 bits LDC1614 — Convertidor inductivo a digital de alta resolución, cuatro canales, 28 bits LDC1614-Q1 — Convertidor inductivo a digital automotriz de alta resolución, cuatro canales, 28 bits LDC2112 — Convertidor inductivo a digital de 2 canales con seguimiento de línea base para botones táctiles de LDC2114 — Convertidor inductivo a digital de 4 canales con seguimiento de línea base para botones táctiles de LDC3114 — Convertidor inductivo a digital de 4 canales para detección de proximidad de baja potencia y botón t LDC3114-Q1 — Convertidor inductivo a digital de 4 canales para la detección de proximidad y pulsadores de baja po
Desarrollo de hardware
Placa de evaluación
LDC0851EVM — LDC0851EVM: interruptor inductivo de alta precisión con módulo de evaluación de bobinas apiladas LDC1614EVM — Módulo de evaluación para convertidor inductivo a digital con bobinas PCB de muestra LDC1614
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Diseños de referencia

TIDA-01377 — Diseño de referencia de detección de manipulación de cajas mediante detección inductiva

The physical case surrounding a smart meter is the first line of defense against tampering. Smart meter designs must incorporate some way to detect when the meter case is opened in order to alert service providers to a possible tamper attack.  This reference design implements a new method for (...)
Design guide: PDF
Esquema: PDF
Diseños de referencia

TIDA-00828 — Diseño de referencia de perilla de codificador de 32 posiciones de detección inductiva utilizando LD

An inductive sensing based incremental encoder knob design can provide a robust and low-cost interface for control inputs.  It can reliably operate in environments which have dirt, moisture, or oil which would pose issues for alternate sensing technologies. This solution requires no magnets.
Design guide: PDF
Esquema: PDF
Diseños de referencia

TIDA-00851-LDC0851 — LDC0851 Diseño de referencia de recuento de eventos

An inductive sensing (LDC)-based event counting design providing a robust and low-cost interface for speed measurement and event counting applications.  The solution doesn't require magnets and reliably operates in environments with dirt, moisture or oil that usually pose challenges for (...)
Design guide: PDF
Esquema: PDF
Paquete Pasadores Descargar
WSON (DSG) 8 Ver opciones
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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Soporte y capacitación

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