Datasheet > MLX90247C

MLX90247C

更新时间： 2024-11-11 05:49:15

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
4页	51K
描述
Thermopile w/NTC Thermistor

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MLX90247C 数据手册

MLX90247C

Thermopile w/NTC Thermistor

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

Ordering Information

Part No.

Description

MLX90247C

Thermopile with 100K NTC Thermistor

Functional Diagram

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.

The sensor IC is packaged together with a NTC chip

thermistor for cold junction reference. The

thermopile and thermistor are separate components,

mounted in close proximity. The NTC thermistors

have higher sensitivity at low temperatures than the

standard PTC thermistors in the B and D models.

ϑ −

The sensor and thermistor can be used independent

of each other if desired, as the thermopile potential

is floating.

MLX90247C Discrete Infrared Sensor IC

Page 1

Rev 1.0 17/Feb/01

12 3 4

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