Inicio Convertidores de datos Convertidores de datos integrados y de funciones especiales AFE de uso médico AFE para biosensores
Inicio
Convertidores de datos
Convertidores de datos integrados y de funciones especiales
AFE de uso médico
AFE para biosensores

AFE4460

ACTIVO

AFE integrado de potencia ultrabaja y SNR alta para biosensores ópticos portátiles con FIFO

Haga su pedido ahora
Hoja de datos

AFE4460

ACTIVO
Hoja de datos Haga su pedido ahora

Detalles del producto

Applications HRV, Optical-HRM, Optical-HRM for wearables, SpO2, Vo2 max Number of input channels 4 Resolution (Bits) 22 Number of LEDs 32 Interface type I2C, SPI Operating temperature range (°C) -40 to 85 Rating Catalog
Applications HRV, Optical-HRM, Optical-HRM for wearables, SpO2, Vo2 max Number of input channels 4 Resolution (Bits) 22 Number of LEDs 32 Interface type I2C, SPI Operating temperature range (°C) -40 to 85 Rating Catalog
DSBGA (YBG) 36 5.76 mm² 2.4 x 2.4
  • Supports signal acquisition of up to 16 phase sets
  • Supports up to 32 LEDs, 4 PDs
  • Flexible allocation of LEDs, PDs in each phase
  • Simultaneous signal acquisition from different sensors at different data rates
  • Accurate, continuous PPG monitoring:
    • Low current for continuous heart-rate monitoring on a wearable device with a typical value: 15 µA for an LED, 15 µA for the receiver
    • Peak system SNR of 115 dB
  • Transmitter:
    • 8-Bit Programmable LED current with range adjustable from 25 mA to 250 mA
    • Mode to fire two LEDs in parallel with independent per-phase current control
    • Programmable LED on-time per-phase
    • Simultaneous support of 32 LEDs for SpO2, Multi-Wavelength HRM, and Spectroscopy
  • Receiver:
    • Supports 4 Time-Multiplexed PD Inputs
    • 4 parallel receivers (4 sets of TIA/filter)
    • Individual ambient offset subtraction DAC at each TIA Input with 8-bit per-phase control and range adjustable up to 255-µA
    • Individual LED offset subtraction DAC at each TIA input with 9-bit per-phase control and 64-µA range
    • Digital ambient subtraction at ADC output
    • Noise filtering with programmable bandwidth
    • Transimpedance gain: 3.7 kΩ to 1 MΩ
  • Supports external clock or internal oscillator
  • Option to acquire data synchronized with a system clock
  • Automatic cancellation of DC from Ambient, LED
  • FIFO with 256-sample depth
  • SPI™ interface/ I2C interface
  • 2.6-mm × 2.6-mm DSBGA, 0.4-mm Pitch
  • Supplies: Rx:1.7 - 1.9 V (LDO Bypass); 1.9 - 3.6 V (LDO Enabled), Tx: 3-5.5 V, IO: 1.7-RX_SUP
  • Supports signal acquisition of up to 16 phase sets
  • Supports up to 32 LEDs, 4 PDs
  • Flexible allocation of LEDs, PDs in each phase
  • Simultaneous signal acquisition from different sensors at different data rates
  • Accurate, continuous PPG monitoring:
    • Low current for continuous heart-rate monitoring on a wearable device with a typical value: 15 µA for an LED, 15 µA for the receiver
    • Peak system SNR of 115 dB
  • Transmitter:
    • 8-Bit Programmable LED current with range adjustable from 25 mA to 250 mA
    • Mode to fire two LEDs in parallel with independent per-phase current control
    • Programmable LED on-time per-phase
    • Simultaneous support of 32 LEDs for SpO2, Multi-Wavelength HRM, and Spectroscopy
  • Receiver:
    • Supports 4 Time-Multiplexed PD Inputs
    • 4 parallel receivers (4 sets of TIA/filter)
    • Individual ambient offset subtraction DAC at each TIA Input with 8-bit per-phase control and range adjustable up to 255-µA
    • Individual LED offset subtraction DAC at each TIA input with 9-bit per-phase control and 64-µA range
    • Digital ambient subtraction at ADC output
    • Noise filtering with programmable bandwidth
    • Transimpedance gain: 3.7 kΩ to 1 MΩ
  • Supports external clock or internal oscillator
  • Option to acquire data synchronized with a system clock
  • Automatic cancellation of DC from Ambient, LED
  • FIFO with 256-sample depth
  • SPI™ interface/ I2C interface
  • 2.6-mm × 2.6-mm DSBGA, 0.4-mm Pitch
  • Supplies: Rx:1.7 - 1.9 V (LDO Bypass); 1.9 - 3.6 V (LDO Enabled), Tx: 3-5.5 V, IO: 1.7-RX_SUP

The AFE4460 is an analog front-end for optical bio-sensing applications, such as heart-rate monitoring (HRM) and saturation of peripheral capillary oxygen (SpO2). The device supports up to 32 switching light-emitting diodes (LEDs) and up to four photodiodes (PDs). The AFE has two LED drivers each with 8-bit current control. The device has a high dynamic range transmit-and-receive circuitry that helps with the sensing of very small signal levels. Up to 16 signal phase sets can be defined, each phase set comprising a combination of LED and Ambient phases. Low noise offset DACs at the receiver inputs can be automatically controlled to cancel DC from Ambient and LED light. The current from each of the 4 PDs in each phase is converted into voltage by TIAs, filtered, and then digitized using a common ADC. The ADC code can be stored in a 256-sample FIFO block. The FIFO can be read out using a SPI or I2C interface.

The AFE4460 is an analog front-end for optical bio-sensing applications, such as heart-rate monitoring (HRM) and saturation of peripheral capillary oxygen (SpO2). The device supports up to 32 switching light-emitting diodes (LEDs) and up to four photodiodes (PDs). The AFE has two LED drivers each with 8-bit current control. The device has a high dynamic range transmit-and-receive circuitry that helps with the sensing of very small signal levels. Up to 16 signal phase sets can be defined, each phase set comprising a combination of LED and Ambient phases. Low noise offset DACs at the receiver inputs can be automatically controlled to cancel DC from Ambient and LED light. The current from each of the 4 PDs in each phase is converted into voltage by TIAs, filtered, and then digitized using a common ADC. The ADC code can be stored in a 256-sample FIFO block. The FIFO can be read out using a SPI or I2C interface.

filter Buscar otro/a AFE para biosensores
Descargar Ver vídeo con transcripción Video
Request more information

Full data sheet and other design resources are available under NDA. Request now

Productos similares que pueden interesarle

open-in-new Comparar alternativas
Misma funcionalidad con diferente configuración de pines que el dispositivo comparado
AFE44I30 ACTIVO Circuito frontal analógico (AFE) integrado de potencia ultrabaja para la detección biológica óptica Same functionality with 108-dB dynamic range, inter-integrated circuit (I2C) interface, automatic ambient cancellation and 1.8-V operation
AFE44S30 ACTIVO Circuito frontal analógico (AFE) integrado de potencia ultrabaja para detección biológica óptica por Same functionality with 108-dB dynamic range, serial peripheral interface (SPI), automatic ambient cancellation and 1.8-V operation

Documentación técnica

star =Principal documentación para este producto seleccionada por TI
No se encontraron resultados. Borre su búsqueda y vuelva a intentarlo.
Ver todo 3
Tipo Título Fecha
* Data sheet AFE4460 Ultra-Small, Integrated AFE for Optical Bio-Sensing datasheet PDF | HTML 21 jun 2022
Product overview Photoplethysmography (PPG) With Integrated AFE for Optical Biosensing PDF | HTML 30 oct 2023
Certificate AFE4460EVM EU RoHS Declaration of Conformity (DoC) 27 jun 2022

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

AFE4460EVM — Módulo de evaluación AFE4460 para módulo frontal analógico integrado (AFE) de potencia ultrabaja y a

El módulo de evaluación (EVM) AFE4460 es una plataforma para evaluar el AFE4460, que es un circuito frontal analógico (AFE), para aplicaciones de biodetección óptica, como la supervisión de la frecuencia cardíaca y la saturación de oxígeno capilar periférico (SpO2).

El AFE4460 admite hasta (...)

Solicitar
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 (...)
Solicitar
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
DSBGA (YBG) 36 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

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

Soporte y capacitación

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

Ver todos los temas del foro en inglés

El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.

Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI. ​​​​​​​​​​​​​​

Videos