AFE4403
- 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.
技術文件
| 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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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。
SLAC713 — AFE4403 Driver Code for CC2640
支援產品和硬體
SLAC677 — AFE4403EVM Firmware Source v2.3
支援產品和硬體
SLAC703 — AFE4403 WristWatch EVM Firmware Source v2.3
支援產品和硬體
SLAC672 — AFE4403EVM GUI v2.2
支援產品和硬體
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前,建立完整的終端設備設計和解決方案原型,進而縮短上市時間並降低開發成本。
在 PSpice for TI 設計與模擬工具中,您可以搜尋 TI (...)
TIDA-00311 — 小型化脈搏血氧儀參考設計
TIDA-00301 — 最小化光學心律參考設計
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| DSBGA (YZP) | 36 | Ultra Librarian |
訂購與品質
- RoHS
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- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中的可靠性監測
- 晶圓廠位置
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