AFE4400

ACTIVO

Extremo frontal analógico integrado (AFE) para monitores de frecuencia cardiaca y pulsioxímetros de

Detalles del producto

Applications Clinical fingertip pulse oximetry, SpO2 Number of input channels 1 Resolution (Bits) 22 Number of LEDs 2 Interface type SPI Operating temperature range (°C) 0 to 70 Rating Catalog
Applications Clinical fingertip pulse oximetry, SpO2 Number of input channels 1 Resolution (Bits) 22 Number of LEDs 2 Interface type SPI Operating temperature range (°C) 0 to 70 Rating Catalog
VQFN (RHA) 40 36 mm² 6 x 6
  • Fully-Integrated Analog Front-End for Pulse Oximeter Applications:
    • Flexible Pulse Sequencing and
      Timing Control
  • Transmit:
    • Integrated LED Driver
      (H-Bridge, Push, or Pull)
    • Dynamic Range: 95 dB
    • LED Current:
      • Programmable to 50 mA with 8-Bit Current Resolution
    • Low Power:
      • 100 µA + Average LED Current
    • Programmable LED On-Time
    • Independent LED2 and LED1 Current Reference
  • Receive Channel with High Dynamic Range:
    • 13 Noise-Free Bits
    • Low Power: < 670 µA at 3.3-V Supply
    • Integrated Digital Ambient Estimation and Subtraction
    • Flexible Receive Sample Time
    • Flexible Transimpedance Amplifier with Programmable LED Settings
  • Integrated Fault Diagnostics:
    • Photodiode and LED Open and
      Short Detection
    • Cable On and Off Detection
  • Supplies:
    • Rx = 2.0 V to 3.6 V
    • Tx = 3.0 V to 5.25 V
  • Package: Compact VQFN-40 (6 mm × 6 mm)
  • Specified Temperature Range: 0°C to 70°C
  • Fully-Integrated Analog Front-End for Pulse Oximeter Applications:
    • Flexible Pulse Sequencing and
      Timing Control
  • Transmit:
    • Integrated LED Driver
      (H-Bridge, Push, or Pull)
    • Dynamic Range: 95 dB
    • LED Current:
      • Programmable to 50 mA with 8-Bit Current Resolution
    • Low Power:
      • 100 µA + Average LED Current
    • Programmable LED On-Time
    • Independent LED2 and LED1 Current Reference
  • Receive Channel with High Dynamic Range:
    • 13 Noise-Free Bits
    • Low Power: < 670 µA at 3.3-V Supply
    • Integrated Digital Ambient Estimation and Subtraction
    • Flexible Receive Sample Time
    • Flexible Transimpedance Amplifier with Programmable LED Settings
  • Integrated Fault Diagnostics:
    • Photodiode and LED Open and
      Short Detection
    • Cable On and Off Detection
  • Supplies:
    • Rx = 2.0 V to 3.6 V
    • Tx = 3.0 V to 5.25 V
  • Package: Compact VQFN-40 (6 mm × 6 mm)
  • Specified Temperature Range: 0°C to 70°C

The AFE4400 is a fully-integrated analog front-end (AFE) ideally suited for pulse oximeter applications. The device consists of a low-noise receiver channel with an integrated analog-to-digital converter (ADC), an LED transmit section, and diagnostics for sensor and LED fault detection. The device is a very configurable timing controller. This flexibility enables the user to have complete control of the device timing characteristics. To ease clocking requirements and provide a low-jitter clock to the AFE4400, an oscillator is also integrated that functions from an external crystal. The device communicates to an external microcontroller or host processor using an SPI™ interface.

The device is a complete AFE solution packaged in a single, compact VQFN-40 package (6 mm × 6 mm) and is specified over the operating temperature range of 0°C to 70°C.

The AFE4400 is a fully-integrated analog front-end (AFE) ideally suited for pulse oximeter applications. The device consists of a low-noise receiver channel with an integrated analog-to-digital converter (ADC), an LED transmit section, and diagnostics for sensor and LED fault detection. The device is a very configurable timing controller. This flexibility enables the user to have complete control of the device timing characteristics. To ease clocking requirements and provide a low-jitter clock to the AFE4400, an oscillator is also integrated that functions from an external crystal. The device communicates to an external microcontroller or host processor using an SPI™ interface.

The device is a complete AFE solution packaged in a single, compact VQFN-40 package (6 mm × 6 mm) and is specified over the operating temperature range of 0°C to 70°C.

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Documentación técnica

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Tipo Título Fecha
* Data sheet AFE4400 Integrated Analog Front-End for Heart Rate Monitors and Low-Cost Pulse Oximeters datasheet (Rev. H) PDF | HTML 24 jul 2014
White paper Evolving Semiconductor Technologies for Modern Telehealth Applications 26 oct 2020
EVM User's guide AFE44x0SPO2EVM User's Guide (Rev. C) 27 may 2014

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

AFE4400SPO2EVM — AFE integrado AFE4400 para módulo de evaluación de monitores de frecuencia cardiaca y pulsioxímetros

The AFE44x0SPO2EVM is intended for evaluating AFE4400 and AFE4490 devices. The family of devices are fully integrated AFE ideally suited for Pulse Oximeter applications and consist of low noise receive channel, the LED transmit section and diagnostics for sensor and LED fault detection. The (...)

Guía del usuario: PDF
Placa de evaluación

AFE4490SPO2EVM — Extremo frontal analógico integrado (AFE) AFE4490 para módulo de evaluación de pulsioxímetros

The AFE44x0SPO2EVM is intended for evaluating AFE4400 and AFE4490 devices. The family of devices are fully integrated AFE ideally suited for Pulse Oximeter applications and consist of low noise receive channel, the LED transmit section and diagnostics for sensor and LED fault detection. The (...)

Guía del usuario: PDF
Firmware

SLAC678 AFE4400SPO2EVM Firmware Source v1.4

lock = Requiere aprobación de exportación (1 minuto)
Productos y hardware compatibles

Productos y hardware compatibles

Productos
AFE para biosensores
AFE4400 Extremo frontal analógico integrado (AFE) para monitores de frecuencia cardiaca y pulsioxímetros de
Desarrollo de hardware
Placa de evaluación
AFE4400SPO2EVM AFE integrado AFE4400 para módulo de evaluación de monitores de frecuencia cardiaca y pulsioxímetros
GUI para el módulo de evaluación (EVM)

SLAC556 AFE44x0SPO2EVM GUI v2.4

lock = Requiere aprobación de exportación (1 minuto)
Productos y hardware compatibles

Productos y hardware compatibles

Productos
AFE para biosensores
AFE4400 Extremo frontal analógico integrado (AFE) para monitores de frecuencia cardiaca y pulsioxímetros de AFE4490 Extremo frontal analógico integrado (AFE) para pulsioxímetros
Desarrollo de hardware
Placa de evaluación
AFE4400SPO2EVM AFE integrado AFE4400 para módulo de evaluación de monitores de frecuencia cardiaca y pulsioxímetros AFE4490SPO2EVM Extremo frontal analógico integrado (AFE) AFE4490 para módulo de evaluación de pulsioxímetros
Modelo de simulación

AFE4490 IBIS Model

SBAM167.ZIP (17 KB) - IBIS Model
Herramienta de simulación

PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de TI

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Paquete Pasadores Descargar
VQFN (RHA) 40 Ver opciones

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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