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MLX90247

Melexis
Part Number MLX90247
Manufacturer Melexis
Description Discrete Infrared Thermopile Detectors
Published Dec 19, 2006
Detailed Description www.DataSheet4U.com Features and Benefits • • • • Solid state sensor High reliability Low cost, small size On chip temp...
Datasheet PDF File MLX90247 PDF File

MLX90247
MLX90247

Overview
www.
DataSheet4U.
com Features and Benefits • • • • Solid state sensor High reliability Low cost, small size On chip temperature sensor Applications • • • Gas analysis equipment IR thermometers Automotive contactless temperature sensing.
Ordering Information Part No MLX90247 MLX90247 MLX90247 Suffix Ta Package code E (-20C to +85C) SF(TO-39) E (-20C to +85C) E (-20C to +85C) SF(TO-39) SF(TO-39) Type DSA DSE DSG Description Thermopile detector with on-chip PTC thermistor, floating thermopile outputs.
Thermopile detector with high sensitivity NTC thermistor, floating thermopile outputs.
Thermopile detector with on-chip PTC thermistor, symmetrical thermopile outputs • 1.
Functional Diagrams 30kOhm 1 1 OutIr+ OutIr+ 60kOhm 20uV/K VSS 4 Thermopile 40uV/K 3 Thermopile OutIr- 20uV/K 3 30kOhm OutIr- 2 Rsens ϑ+ 26kOhm PTC Socket 2 100kOhm Rsens ϑ − 4 VSS NTC Socket MLX90247DSG 3901090247 Rev.
002 Page 1 of 11 MLX90247DSE Data Sheet Aug/02 1 60kOhm 40uV/K 3 Thermopile OutIr+ OutIr- 2 Rsens 26kOhm ϑ+ 4 PTC Socket VSS MLX90247DSA 2.
Description The MLX90247family sensors are thermopile sensors IC which detects very small amounts of heat radiation.
The sensors consist of a membrane with a thermopile on top of it.
The hot junctions of the thermopile are positioned near the center of the membrane and 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 MLX90247DSG sensor IC is integrated together with a PTC thermistor.
The thermopile sensor is grounded at the middle point, so that the output common-mode voltage is at ground potential.
Using grounded thermopile sensor gives improved EMC susceptibility in some applications.
The MLX902...


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