Description
The MAX30205MTA is a high-accuracy digital temperature sensor specifically designed for human body temperature monitoring . Using a direct-to-digital output via I²C, it offers medical-grade precision without requiring calibration, making it ideal for wearables, thermometers, and healthcare IoT systems. Accuracy meets the clinical thermometry specification of ASTM E1112 when soldered on the final PCB
Key Features
- Medical-Grade Accuracy: ±0.1°C in the critical 37°C to 39°C human body temperature range
- Digital I²C Output: 16-bit resolution (0.00390625°C per LSB) with no analog conversion required
- Factory Calibrated: Ready-to-use with no external tuning needed
- Low Operating Voltage: Compatible with 2.7V to 3.3V systems
- Overtemperature Alert: Programmable open-drain output pin for interrupt or thermostat functionality
- Human-Centric Range: Optimized for body temperature sensing from 0°C to 50°C
- 32 Available I²C Addresses: Features three address select lines for multiple sensors on the same bus
- Compact Module: 8-pin TDFN package (3mm × 3mm) for easy integration into wearable or portable devices
Specifications
| Parameter | Specification |
|---|---|
| Model | MAX30205MTA+ |
| Sensor Type | Digital, local temperature sensor |
| Temperature Range | 0°C to +50°C (optimized for body sensing) |
| Accuracy | ±0.1°C (37°C to 39°C range); ±0.5°C (0°C to 15°C, 45°C to 50°C) |
| Resolution | 16-bit (0.00390625°C per LSB) |
| Output Interface | I²C (7-bit address: 0x48 default; 32 addresses available) |
| Operating Voltage | 2.7V – 3.3V |
| Active Current | 600 µA typical |
| Shutdown Current | <1 µA |
| Alert Function | Configurable overtemperature interrupt/comparator |
| Package | 8-TDFN-EP (3mm × 3mm) |
| Operating Temperature | 0°C to +50°C |
| ASTM Compliance | Meets ASTM E1112 clinical thermometry specification |
Applications
- Wearable medical devices and smart thermometers
- Contactless patient monitoring systems
- Human temperature logging in fitness trackers
- IoT healthcare and body diagnostics
- Thermal management in wellness devices.