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Mlx90614esf
MLX90614ESF is a fully integrated infrared thermometer IC manufactured by Melexis, packaged in TO-39 metal through-hole housing. It adopts thermopile principle to detect infrared radiation emitted from target surface without physical contact.
This chip measures two temperature values at the same time: object temperature and local ambient temperature. It is pre-calibrated at factory, no extra calibration needed. The temperature resolution reaches 0.02°C, typical precision ±0.5°C within 0~50°C range. It provides dual output options: SMBus compatible I2C digital communication or configurable 10-bit PWM continuous temperature output.
1. Factory Pre-Calibrated Non-Contact Infrared Sensing
MLX90614ESF is a high precision single-point infrared thermopile sensor IC manufactured by Melexis. It integrates thermopile detector, low-noise amplifier, ADC and DSP inside TO-39 metal package. Factory finished calibration, no extra calibration required by users. It can simultaneously measure object surface temperature and sensor ambient temperature, support non-contact temperature measurement without physical contact with target surface.
2. Dual Output Interface: SMBus(I2C) and PWM
Supports SMBus compatible I2C digital communication, easy to connect with MCU for digital temperature reading. It also provides configurable 10-bit PWM continuous temperature output. Multiple sensors can share one two-wire bus, up to 127 sensors on single bus, convenient for multi-point temperature monitoring system design.
3. Ultra High Resolution & Excellent Measurement Accuracy
Temperature resolution reaches 0.02℃, typical accuracy ±0.5℃ within 0~50℃ range. Multiple field-of-view options including 5°,10°,35°,90° for different detection distance and target size requirement. Metal TO-39 packaging shields external light interference and electromagnetic noise, improves stability under complex lighting environment.
4. Low Power Operation & Wide Temperature Range
Operating supply voltage from 3.3V to 5.5V, compatible with common MCU power rails. Typical quiescent current 1.2mA, suitable for battery-powered portable devices. Object temperature measuring range: -70℃ ~ +380℃; sensor ambient working temperature: -40℃ ~ +85℃.
5. Compact Metal Packaging & Wide Scenario Compatibility
TO-39 metal can through-hole package, good heat isolation and anti-interference performance. RoHS compliant. Widely used for new product development, equipment maintenance replacement, electronic prototype and BOM matching.
Item | Specifications |
|---|---|
Part Number | MLX90614ESF |
Product Series | Infrared Thermopile Non-contact Temperature Sensor IC |
Manufacturer | Melexis |
Sensing Principle | Infrared thermopile thermal radiation detection |
Output Type | SMBus(I2C) Digital + 10-bit PWM configurable output |
Supply Voltage | 3.3V ~ 5.5V DC |
Typical Quiescent Current | 1.2mA |
Object Temperature Range | -70℃ ~ +380℃ |
Ambient Operating Temp | -40℃ ~ +85℃ |
Resolution | 0.02℃ |
Typical Accuracy | ±0.5℃ (0~50℃) |
Field of View | Multiple options:5°,10°,35°,90° |
Package | TO-39 Metal Can, Through Hole |
Pin Definition | Pin1:VDD; Pin2:SDA/PWM; Pin3:SCL; Pin4:GND |
Mounting Style | Through Hole |
Compliance | RoHS Compliant |
Core Advantages | Pre-calibrated non-contact measurement, dual signal output, high resolution, metal shielding package, multi-FOV selection, low power, easy to interface with MCU |
Application Grade | Industrial equipment non-contact thermal inspection, household appliance temperature control, human temperature detection, moving object temperature monitoring, HVAC thermal measurement, embedded development project, equipment repair & BOM replacement |
1. Industrial Non-Contact Thermal Inspection
Surface temperature measurement for rotating machinery, hot pipeline, high voltage equipment, realize temperature monitoring without touching high-temperature moving parts.
2. Household Appliance & HVAC Thermal Control
Temperature sensing for oven, air conditioner, refrigerator and heat pump system, non-contact temperature feedback for smart home devices.
3. Portable Non-contact Temperature Measuring Instrument
Core sensor for handheld infrared thermometer, low power design supports battery-powered portable measurement equipment.
4. Moving Object & Production Line Temperature Detection
Online temperature inspection on production conveyor belt, monitor product surface temperature continuously.
5. Electronic Prototype, Teaching Experiment & BOM Replacement
Common infrared temperature sensor for embedded development and university lab projects, standard replacement component for old non-contact temperature measurement equipment maintenance.
