[Melexis]

Description

The MLX90247C is a thermopile sensor IC which detects very small amounts of heat radiation. The sensor consists of a membrane with a thermopile on top of it.

The hot junctions of the thermopile are positioned near the center of the membrane, the cold junctions above the bulk silicon edge.

Due to the low thermal conductivity of the membrane, absorbed heat will cause the temperature to increase more at the center of the membrane than at the edge above the bulk. This temperature difference is converted to an electric potential by the thermo-electric effect in the thermopile junctions. No supply voltage is needed.

Features and Benefits

Solid state sensor

High reliability

Low cost, small size

On chip temperature sensor

Applications

Non-Contact Temperature Sensing

Differential Temperature Sensing

Climate Control

Ear, Temple Thermometers

Household and Commercial Appliances