AFE4403

現行

適用於心率監控器及低成本血氧分析的超小型整合式類比前端 (AFE)

產品詳細資料

Applications Clinical fingertip pulse oximetry, Optical-HRM, SpO2 Number of input channels 1 Resolution (Bits) 22 Number of LEDs 3 Interface type SPI Operating temperature range (°C) -20 to 70 Rating Catalog
Applications Clinical fingertip pulse oximetry, Optical-HRM, SpO2 Number of input channels 1 Resolution (Bits) 22 Number of LEDs 3 Interface type SPI Operating temperature range (°C) -20 to 70 Rating Catalog
DSBGA (YZP) 36 10.5625 mm² 3.25 x 3.25
  • Fully-Integrated AFE for Pulse Oximeter and Heart Rate Monitoring Applications:
  • Transmit:
    • Integrated Dual LED Driver (H-Bridge or Common Anode)
    • Option for a Third LED Support for Optimized SPO2, HRM, or Multi-Wavelength HRM
    • Up to 110-dB Dynamic Range
    • LED Current:
      • Programmable to 100 mA with 8-Bit Current Resolution
    • 30 µA + Average LED Current
    • Programmable LED On-Time
    • Independent LED2 and LED1 Current Reference
  • Receive Channel with High Dynamic Range:
    • 22-Bit Output in Twos Complement Format
    • Up to 105-dB Dynamic Range
    • Low Power: < 650 µA
    • Dynamic Power-Down Mode to Reduce Current to 300 µA
    • Adaptable to a Very Wide Range of Signal Amplitudes:
      • Total Programmable Gain: 10 kΩ to 4 MΩ
    • Integrated Digital Ambient Estimation and Subtraction
  • Flexible Clocking by External Clock or Crystal:
    • Pulse Frequency: 62.5 SPS to 2000 SPS
    • Flexible Pulse sequencing and Timing Control
    • Input Clock Range: 4 MHz (Min) to 60 MHz (Max)
  • Integrated Fault Diagnostics:
    • Photodiode and LED Open and Short Detection
  • Supplies:
    • Rx = 2.0 V to 3.6 V
    • Tx = 3.0 V to 5.25 V
  • Package: Compact DSBGA-36 (3.07 mm × 3.07 mm × 0.5 mm)
  • Specified Temperature Range: 0°C–20°C to 70°C
  • Fully-Integrated AFE for Pulse Oximeter and Heart Rate Monitoring Applications:
  • Transmit:
    • Integrated Dual LED Driver (H-Bridge or Common Anode)
    • Option for a Third LED Support for Optimized SPO2, HRM, or Multi-Wavelength HRM
    • Up to 110-dB Dynamic Range
    • LED Current:
      • Programmable to 100 mA with 8-Bit Current Resolution
    • 30 µA + Average LED Current
    • Programmable LED On-Time
    • Independent LED2 and LED1 Current Reference
  • Receive Channel with High Dynamic Range:
    • 22-Bit Output in Twos Complement Format
    • Up to 105-dB Dynamic Range
    • Low Power: < 650 µA
    • Dynamic Power-Down Mode to Reduce Current to 300 µA
    • Adaptable to a Very Wide Range of Signal Amplitudes:
      • Total Programmable Gain: 10 kΩ to 4 MΩ
    • Integrated Digital Ambient Estimation and Subtraction
  • Flexible Clocking by External Clock or Crystal:
    • Pulse Frequency: 62.5 SPS to 2000 SPS
    • Flexible Pulse sequencing and Timing Control
    • Input Clock Range: 4 MHz (Min) to 60 MHz (Max)
  • Integrated Fault Diagnostics:
    • Photodiode and LED Open and Short Detection
  • Supplies:
    • Rx = 2.0 V to 3.6 V
    • Tx = 3.0 V to 5.25 V
  • Package: Compact DSBGA-36 (3.07 mm × 3.07 mm × 0.5 mm)
  • Specified Temperature Range: 0°C–20°C to 70°C

The AFE4403 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 AFE4403, 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 DSBGA-36 (3.07 mm × 3.07 mm × 0.5 mm) and is specified over the operating temperature range of –20°C to 70°C.

The AFE4403 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 AFE4403, 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 DSBGA-36 (3.07 mm × 3.07 mm × 0.5 mm) and is specified over the operating temperature range of –20°C to 70°C.

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重要文件 類型 標題 格式選項 日期
* Data sheet AFE4403 Ultra-Small, Integrated Analog Front-End for Heart Rate Monitors and Low-Cost Pulse Oximeters datasheet (Rev. C) PDF | HTML 2020年 11月 18日
White paper 持續進化的現代遠距照護應用半導 體技術 2020年 10月 28日
Technical article Designing compact, efficient and high performing multiparameter patient monitors PDF | HTML 2019年 6月 25日
Application note How to Design an SpO2 and OHRM System Using AFE4403 2015年 3月 2日

設計與開發

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開發板

AFE4403EVM — 適用於心率監控器和脈搏血氧儀的 AFE4403 整合式 AFE 評估模組

AFE4403EVM 旨在評估 AFE4403 裝置。完全整合的 AFE 非常適合脈搏血氧儀和心率監測應用,其中包含低雜訊接收通道、LED 發射區段以及感測器和 LED 故障偵測的診斷功能。AFE4403 具備高度可設定的時序控制器,讓使用者能完全控制裝置的時序特性。此裝置亦內建整合式振盪器,可使用兩種時脈來源(外部晶體或來自外部主機處理器的時脈)運作,以減輕時脈需求,並為 AFE4403 提供低抖動時脈。該裝置使用序列週邊設備介面 (SPI) 與外部主機處理器進行通訊。  AFE4403EVM 旨在加速與 AFE4403 裝置相關的評估及系統開發活動。

使用指南: PDF
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驅動程式或資料庫

AFE4403SW-DESIGN Linux Driver for AFE4403

Please find the AFE4403 Linux Driver here
支援產品和硬體

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驅動程式或資料庫

SLAC713 AFE4403 Driver Code for CC2640

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韌體

SLAC677 AFE4403EVM Firmware Source v2.3

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韌體

SLAC703 AFE4403 WristWatch EVM Firmware Source v2.3

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開發模組 (EVM) 的 GUI

SLAC672 AFE4403EVM GUI v2.2

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模擬型號

AFE4403 IBIS Model

SBAM194.ZIP (28 KB) - IBIS Model
模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI 是有助於評估類比電路功能的設計和模擬環境。這款全功能設計和模擬套件使用 Cadence® 的類比分析引擎。PSpice for TI 包括業界最大的模型庫之一,涵蓋我們的類比和電源產品組合,以及特定類比行為模型,且使用無需支付費用。

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在 PSpice for TI 設計與模擬工具中,您可以搜尋 TI (...)
參考設計

TIDA-00311 — 小型化脈搏血氧儀參考設計

此參考設計是專為高階臨床應用設計的最小化脈搏血氧儀。小巧外型模組可輕鬆簡化並加速脈搏血氧儀系統設計。此設計也搭載用於介接 LED 和光二極體感測器的 TI AFE4403 類比前端,其中也包含用於處理 AFE 資訊的 MCU。此設計的外形尺寸比 TIDA-00010 更小。
使用指南: PDF
電路圖: PDF
參考設計

TIDA-00301 — 最小化光學心律參考設計

此參考設計適用於小型化的光學心率監測量測解決方案(無需胸帶!),專為穿戴式與行動應用所設計。小型模組可輕鬆介接智慧型手機、平板電腦和穿戴式裝置。運用 TI 的 AFE4403 AFE,您可加速及簡化光學 HRM 設計,同時仍能確保嚴苛健身設計所需的量測性能。  此設計的外形尺寸比 TIDA-00011 更小。
Design guide: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
DSBGA (YZP) 36 Ultra Librarian

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