FDC2212

ACTIVO

Convertidor de capacitancia a digital de 2 canales y 28 bits

Detalles del producto

Number of input channels 2 Operating temperature range (°C) -40 to 125 Vs (min) (V) 2.7 Interface type I2C Resolution (Bits) 28 Rating Catalog
Number of input channels 2 Operating temperature range (°C) -40 to 125 Vs (min) (V) 2.7 Interface type I2C Resolution (Bits) 28 Rating Catalog
WSON (DNT) 12 16 mm² 4 x 4
  • EMI-resistant architecture
  • Maximum output rates (one active channel):
    • 13.3kSPS (FDC2112, FDC2114)
    • 4.08kSPS (FDC2212, FDC2214)
  • Maximum input capacitance: 250nF (at 10kHz with 1mH inductor)
  • Sensor excitation frequency: 10kHz to 10MHz
  • Number of channels: 2, 4
  • Resolution: up to 28 bits
  • System noise floor: 0.3fF at 100SPS
  • Supply voltage: 2.7V to 3.6V
  • Power consumption: active: 2.1mA
  • Low-power sleep mode: 35µA
  • Shutdown: 200nA
  • Interface: I2C
  • Temperature range: –40°C to +125°C
  • EMI-resistant architecture
  • Maximum output rates (one active channel):
    • 13.3kSPS (FDC2112, FDC2114)
    • 4.08kSPS (FDC2212, FDC2214)
  • Maximum input capacitance: 250nF (at 10kHz with 1mH inductor)
  • Sensor excitation frequency: 10kHz to 10MHz
  • Number of channels: 2, 4
  • Resolution: up to 28 bits
  • System noise floor: 0.3fF at 100SPS
  • Supply voltage: 2.7V to 3.6V
  • Power consumption: active: 2.1mA
  • Low-power sleep mode: 35µA
  • Shutdown: 200nA
  • Interface: I2C
  • Temperature range: –40°C to +125°C

Capacitive sensing is a low-power, high-resolution contactless sensing technique that can be applied to a variety of applications ranging from proximity detection and gesture recognition to remote liquid level sensing. The sensor in a capacitive sensing system is any metal or conductor, allowing for a highly flexible system design.

The main challenge limiting sensitivity in capacitive sensing applications is noise susceptibility of the sensors. With the FDC2x1x resonant sensing architecture, performance can be maintained even in the presence of fluorescent light.

The FDC2x1x is a multi-channel family of high-resolution, high-speed capacitance-to-digital converters for implementing capacitive sensing solutions. The devices employ an innovative narrow-band based architecture to offer high rejection of out of band noise while providing high resolution at high speed. The devices support a wide excitation frequency range, offering flexibility in system design. A wide frequency range is especially useful for reliable sensing of conductive liquids such as detergent, soap, and ink.

The FDC221x is optimized for high resolution, up to 28 bits, while the FDC211x offers a fast sample rate of up to 13.3kSPS for easy implementation of applications that use fast moving targets. The large maximum input capacitance of 250nF allows for the use of remote sensors, as well as for tracking environmental changes over time such as temperature and humidity.

The FDC2x1x family targets proximity sensing and liquid level sensing applications for any type of liquids. For non-conductive liquid level sensing applications in the presence of interferences such as human hands, the FDC1004 is recommended and features integrated active shield drivers.

Capacitive sensing is a low-power, high-resolution contactless sensing technique that can be applied to a variety of applications ranging from proximity detection and gesture recognition to remote liquid level sensing. The sensor in a capacitive sensing system is any metal or conductor, allowing for a highly flexible system design.

The main challenge limiting sensitivity in capacitive sensing applications is noise susceptibility of the sensors. With the FDC2x1x resonant sensing architecture, performance can be maintained even in the presence of fluorescent light.

The FDC2x1x is a multi-channel family of high-resolution, high-speed capacitance-to-digital converters for implementing capacitive sensing solutions. The devices employ an innovative narrow-band based architecture to offer high rejection of out of band noise while providing high resolution at high speed. The devices support a wide excitation frequency range, offering flexibility in system design. A wide frequency range is especially useful for reliable sensing of conductive liquids such as detergent, soap, and ink.

The FDC221x is optimized for high resolution, up to 28 bits, while the FDC211x offers a fast sample rate of up to 13.3kSPS for easy implementation of applications that use fast moving targets. The large maximum input capacitance of 250nF allows for the use of remote sensors, as well as for tracking environmental changes over time such as temperature and humidity.

The FDC2x1x family targets proximity sensing and liquid level sensing applications for any type of liquids. For non-conductive liquid level sensing applications in the presence of interferences such as human hands, the FDC1004 is recommended and features integrated active shield drivers.

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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Fecha
* Data sheet FDC2x1x Multi-Channel, High Resolution Capacitance-to-Digital Converter for Capacitive Sensing Applications datasheet (Rev. B) 10 oct 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 brief Quantifying Ice and Frost Buildup Using Capacitive Sensors 30 nov 2017
Application note Capacitive Proximity Sensing Using FDC2x1y (Rev. A) 20 oct 2017
Application note Ground Shifting in Capacitive Sensing Applications PDF | HTML 27 may 2016
Technical article Top three reasons to include proximity sensing in your human interface design PDF | HTML 28 ene 2016
Application note Power Consumption Analysis for Low Power Capacitive Sensing Applications PDF | HTML 18 ene 2016
Technical article Capacitive sensing: simple algorithm for proximity sensing PDF | HTML 23 nov 2015
Technical article Capacitive sensing: which architecture should you choose? PDF | HTML 20 oct 2015
Application note Derivative Integration Algorithm for Proximity Sensing 29 sep 2015
Application note Capacitive Sensing: Direct vs Remote Liquid Level Sensing Performance Analysis (Rev. A) 24 jul 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

FDC2214EVM — Módulo de evaluación FDC2214 con dos sensores capacitivos

The FDC2214 evaluation module demonstrates capacitive sensing technology to detect the presence of a conductive or non-conductive target. The evaluation module includes two PCB capacitive sensors that connect to two of the four channels of the FDC2214. An MSP430 microcontroller is used to interface (...)

Guía del usuario: PDF
GUI para el módulo de evaluación (EVM)

SNOC028 Sensing Solutions EVM GUI Tool v1.10.0

Productos y hardware compatibles

Productos y hardware compatibles

Soporte de software

SNOC033 FDC211x/FDC221x Current Consumption Estimator

Productos y hardware compatibles

Productos y hardware compatibles

Modelo de simulación

FDC2212 IBIS MODEL

SLAM264.ZIP (26 KB) - IBIS Model
Diseños de referencia

TIDA-00466 — Diseño de referencia del sistema del sensor de proximidad capacitivo inmune al ruido

The FDC2214 proximity and capacitive sensing design demonstrates the use of TI's capacitive sensing technology to sense and detect the presence of various objects. The design is a complete hardware and firmware solution. The firmware  processes the data from one proximity sensor and two (...)
Esquema: PDF
Diseños de referencia

TIDA-01364 — Diseño de referencia del control inteligente de retroiluminación mediante controlador LED blanco, lu

Este diseño de referencia conserva la energía y prolonga la vida útil de la retroiluminación de la pantalla LCD ajustando de forma dinámica el brillo de la retroiluminación en función de los niveles de luz ambiental. Un sensor de proximidad capacitivo ahorra energía y aumenta la vida útil de la (...)
Design guide: PDF
Esquema: PDF
Diseños de referencia

TIDA-00754 — Diseño de referencia del control inteligente de retroiluminación e iluminación mediante luz ambienta

Este diseño de referencia muestra una implementación de sensor de proximidad para aplicaciones HMI. El diseño se puede utilizar para el control de la retroiluminación, que ajusta de forma dinámica el brillo de la retroiluminación de la pantalla LCD en función de los niveles de luz ambiental del (...)
Design guide: PDF
Esquema: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
WSON (DNT) 12 Ultra Librarian

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

Los productos recomendados pueden tener parámetros, módulos de evaluación o diseños de referencia relacionados con este producto de TI.

Soporte y capacitación

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