Multi-Function Analog Front-End for PPG and SpO₂ Measurement — integrating LED drivers, transimpedance amplifiers, and ADC for precise low-power biomedical sensing and wearable health monitoring systems.
Product Overview
The AFE4490RHAR from Texas Instruments is a fully integrated analog front-end designed for optical biosensing applications such as heart-rate and SpO₂ monitoring.
It incorporates high-precision LED drivers, a transimpedance amplifier (TIA), a 16-bit ADC, and programmable gain and timing control.
Operating from 1.8V to 3.6V, it offers excellent noise suppression, ambient light cancellation, and high dynamic range for reliable biomedical signal acquisition.
Packaged in a compact 32-pin QFN (RHA), it is optimized for wearable health devices, medical monitors, and portable diagnostics.
Key Features
Applications
Key Specifications
| Parameter | Specification |
| Brand | Texas Instruments (TI) |
| Part Number | AFE4490RHAR |
| Function | Analog Front-End for PPG/SpO₂ |
| Input Channels | Dual (RED / IR) |
| ADC Resolution | 16-bit |
| LED Drivers | Integrated dual driver |
| Interface | SPI |
| Operating Voltage | 1.8 V – 3.6 V |
| Power Consumption | Ultra low-power mode supported |
| Sampling Rate | Programmable, up to 500 SPS |
| Package | QFN-32 (RHA) |
| Operating Temperature | –40°C to +85°C |
| Compliance | RoHS / REACH |
RFQ & Support
Jaron supplies genuine TI AFE4490RHAR with full technical and sourcing support.
For quotation, please specify target price, quantity, ETA, and application field.
We provide BOM kitting, EOL replacement, PPV optimization, and global sourcing services.
📩 Email: [email protected]
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