mlx90247b ETC-unknow, mlx90247b Datasheet

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mlx90247b

Manufacturer Part Number
mlx90247b
Description
Thermopile W/on-chip Thermistor
Manufacturer
ETC-unknow
Datasheet
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.
MLX90247B
Functional Diagram
MLX90247B Discrete Infrared Sensor IC
Description
Thermopile with On-chip PTC Thermistor
Page 1
Description
The MLX90247B 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,
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 integrated together with a PTC
thermistor in one silicon mass. The PTC is adjacent
to the cold junctions of the thermopile. As such, use
of the PTC is considered the more accurate method
of measuring thermopile cold junction temperature,
and thus overall sensor accuracy when making non-
contact temperature measurement.
The sensor and thermistor can be used independent
of each other if desired, as the thermopile potential
is floating.
Thermopile w/On-Chip Thermistor
absorbed
MLX90247B
heat
Rev 1.0 17/Feb/01
will
cause
the

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mlx90247b Summary of contents

Page 1

... Functional Diagram MLX90247B Discrete Infrared Sensor IC MLX90247B Thermopile w/On-Chip Thermistor Description The MLX90247B 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 ...

Page 2

... Note: when measuring resistances with an ohm meter, please take care that the internal protection diodes, as indicated in the diagram below, are always reverse biased. MLX90247B Absolute Maximum Ratings Parameter Value Operating temperature -40 ~ 150 Storage temperature -40 ~ 150 Soldering temperature <220 MLX90247B Discrete Infrared Sensor IC MLX90247B Thermopile w/On-Chip Thermistor o C, (unless otherwise specified) Test Condition Min Typ @298K 44 59.5 ...

Page 3

... Disclaimer Melexis reserves the right to periodically make modifications to product specifications. The information included herein is believed to be accurate and reliable. However, Melexis assumes no responsibility for its use; nor for any infringements of patents or other rights of third parties which may result from it’s use. MLX90247B Discrete Infrared Sensor IC Thermopile w/On-Chip Thermistor TO-39 package - connections ...

Page 4

... Fax: +44 1428 751 603 E-mail: sales_uk@melexis.com Germany Schiess-strasse 55, 40549 Düsseldorf, Germany Phone: +49 211 5360212 Fax: +49 211 5360250 E-mail: sales_de@melexis.com MLX90247B Discrete Infrared Sensor IC MLX90247B Thermopile w/On-Chip Thermistor France Melexis France Tour Arago, 5 rue Bellini, 92806 Puteaux-La-Défense, France. Phone: + Fax: + E-mail: sales_france@melexis ...

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