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
| 類型 | 標題 | 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 | ||
| EVM User's guide | AFE4403EVM User's Guide (Rev. B) | 2014年 7月 21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
The AFE4403EVM is intended for evaluating the AFE4403 device. The fully integrated AFE is ideally suited for Pulse Oximeter and Heart rate monitoring applications and consists of low noise receive channel, the LED transmit section and diagnostics for sensor and LED fault detection. The AFE4403 has (...)
SLAC677 — AFE4403EVM Firmware Source v2.3
支援產品和硬體
產品
生物感測 AFE
硬體開發
開發板
SLAC672 — AFE4403EVM GUI v2.2
支援產品和硬體
產品
生物感測 AFE
硬體開發
開發板
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
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 | 引腳 | 下載 |
|---|---|---|
| DSBGA (YZP) | 36 | 檢視選項 |
訂購與品質
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- MTBF/FIT 估算值
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- 資格摘要
- 進行中可靠性監測
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