This document is a datasheet for the MLX90247 product, describing its features and benefits, as well as its applications and ordering information.
The MLX90247 family from Melexis consists of discrete infrared thermopile detectors with integrated thermistors (PTC or NTC). They provide solid‑state, low‑cost temperature sensing without a supply voltage, suitable for gas analysis, IR thermometers and automotive contactless temperature sensing.
The document includes functional diagrams, electrical specifications for the DSG, DSE and DSA variants, pin‑out details for the TO‑39 package, housing specifications, reliability and ESD precautions, and ordering information.
| Operating Temperature Range | -20 °C to 85 °C |
|---|---|
| Thermopile Resistance | 44 kΩ – 75 kΩ |
| Thermistor Value (PTC) | 18.2 kΩ – 33.8 kΩ |
| Thermal Coefficient (PTC) | 11.57 µV/K² |
The sensors operate from –20 °C to 85 °C unless otherwise specified.
Pin 1 is Outlr+ (infrared thermopile positive output), Pin 2 is Rsens (thermistor for ambient temperature), Pin 3 is Outlr‑ (infrared thermopile negative output), and Pin 4 is Vss (ground/case potential).
The MLX90247DSG variant includes an on‑chip PTC thermistor.