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Product Overview
The AFE4400RHAT from Texas Instruments is a highly integrated analog front-end (AFE) designed for optical biosensing applications, such as heart rate monitoring and pulse oximetry. It features a 4-channel, 24-bit delta-sigma ADC with integrated LED drivers, photodiode inputs, and ambient light cancellation. The device operates from a single 3.3V supply and is housed in a compact 40-pin VQFN (6x6 mm) package, making it ideal for wearable and portable medical devices.
Detailed Technical Specifications
| Parameter |
Value |
| Number of Channels |
4 |
| Resolution |
24 bits |
| Sampling Rate |
Up to 1 kSPS |
| Input Noise |
8 µVpp (typical) |
| LED Driver Current |
Up to 100 mA per channel |
| Supply Voltage |
3.0 V to 3.6 V |
| Operating Temperature |
-40°C to +85°C |
| Package |
40-VQFN (6x6 mm) |
Key Features
- 4-channel, 24-bit delta-sigma ADC for high-resolution measurements
- Integrated programmable LED drivers with up to 100 mA per channel
- Ambient light cancellation for improved signal quality
- Flexible timing controller for synchronized LED and ADC operation
- I2C and SPI interface for easy integration
- Low power consumption: 2.5 mW (typical) in continuous operation
Target Applications
- Wearable fitness trackers (e.g., Fitbit Charge 5, Garmin Vivosmart)
- Smartwatches with heart rate monitoring (e.g., Apple Watch Series 7, Samsung Galaxy Watch 4)
- Pulse oximeters for clinical and home use
- Optical heart rate monitors for medical devices
- Non-invasive blood pressure monitors
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
AFE4400RHAT. Our core advantages include:
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24/7 Global Customer Support: Professional team providing instant
quotes and technical support worldwide.
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In-stock Inventory, Same-day Shipping: We maintain localized stock;
orders confirmed before 4 PM are shipped the same day.
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HK-SZ Synergy, Flexible Settlement: Direct global shipping from
Shenzhen with support for HK bank transfers and multi-currency.
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Escrow Secured Transactions: We support Escrow.com for secure
transactions, ensuring peace of mind for batch orders.
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BOM Kitting & Sampling Services: Specialized sourcing for
testing samples and urgent shortage components.
Quality Assurance & Compliance
Jasin Chip guarantees that all delivered products are 100% original factory stock
with full quality assurance and traceability.
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100% Original & Authentic: All components are guaranteed to
be authentic with strict quality control.
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RoHS Compliant: All electronic components comply with international
environmental and safety standards.
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Original Factory Packaging: We maintain original factory packaging
and seals to ensure ESD protection and physical integrity.
產品概述
AFE4400RHAT 是德州儀器(TI)推出的一款高度集成的模擬前端,專為光學生物感測應用(如心率監測和脈搏血氧儀)設計。它包含一個4通道、24位Δ-Σ ADC,集成LED驅動器、光電二極體輸入和環境光消除功能。該器件在單一3.3V電源下工作,採用緊湊的40引腳VQFN(6x6 mm)封裝,非常適合可穿戴和便攜式醫療設備。
詳細技術參數
| 參數 |
數值 |
| 通道數 |
4 |
| 解析度 |
24位 |
| 採樣率 |
最高1 kSPS |
| 輸入噪聲 |
8 µVpp(典型值) |
| LED驅動電流 |
每通道最高100 mA |
| 電源電壓 |
3.0 V 至 3.6 V |
| 工作溫度 |
-40°C 至 +85°C |
| 封裝 |
40-VQFN(6x6 mm) |
核心特性
- 4通道、24位Δ-Σ ADC,實現高解析度測量
- 集成可編程LED驅動器,每通道最高100 mA
- 環境光消除功能,提升信號品質
- 靈活的時序控制器,實現LED和ADC同步操作
- I2C和SPI介面,便於集成
- 低功耗:連續工作時典型值2.5 mW
典型應用場景
- 可穿戴健身追蹤器(如Fitbit Charge 5、Garmin Vivosmart)
- 帶心率監測的智能手錶(如Apple Watch Series 7、Samsung Galaxy Watch 4)
- 臨床和家用脈搏血氧儀
- 醫療設備中的光學心率監測器
- 非侵入式血壓監測儀
環球供應鏈與批發合作夥伴方案
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我們的核心優勢包括:
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