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w/NTC Thermistor. MLX90247C Datasheet

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w/NTC Thermistor. MLX90247C Datasheet
















MLX90247C Thermistor. Datasheet pdf. Equivalent













Part

MLX90247C

Description

Thermopile w/NTC Thermistor



Feature


www.DataSheet4U.com MLX90247C Thermopil e w/NTC Thermistor Features and Benefi ts Solid state sensor High reliability Low cost, small size On chip temperatur e sensor Applications Non-Contact Temp erature Sensing Differential Temperatur e Sensing Climate Control Ear, Temple T hermometers Household and Commercial Ap pliances Ordering Information Part No. MLX90247C Descrip.
Manufacture

Melexis

Datasheet
Download MLX90247C Datasheet


Melexis MLX90247C

MLX90247C; tion Thermopile with 100K NTC Thermistor Functional Diagram Description The M LX90247C is a thermopile sensor IC whic h detects very small amounts of heat ra diation. The sensor consists of a membr ane with a thermopile on top of it. The hot junctions of the thermopile are po sitioned near the center of the membran e, the cold junctions above the bulk si licon edge. Due to.


Melexis MLX90247C

the low thermal conductivity of the mem brane, absorbed heat will cause the tem perature 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 b y the thermo-electric effect in the the rmopile junctions. No supply voltage is needed. The sensor IC is packaged toge ther with a NTC ch.


Melexis MLX90247C

ip thermistor for cold junction referenc e. The thermopile and thermistor are se parate components, mounted in close pro ximity. The NTC thermistors have higher sensitivity at low temperatures than t he standard PTC thermistors in the B an d D models. The sensor and thermistor c an be used independent of each other if desired, as the thermopile potential i s floating. ϑ − .





Part

MLX90247C

Description

Thermopile w/NTC Thermistor



Feature


www.DataSheet4U.com MLX90247C Thermopil e w/NTC Thermistor Features and Benefi ts Solid state sensor High reliability Low cost, small size On chip temperatur e sensor Applications Non-Contact Temp erature Sensing Differential Temperatur e Sensing Climate Control Ear, Temple T hermometers Household and Commercial Ap pliances Ordering Information Part No. MLX90247C Descrip.
Manufacture

Melexis

Datasheet
Download MLX90247C Datasheet




 MLX90247C
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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.
MLX90247C
Description
Thermopile with 100K NTC Thermistor
Functional Diagram
ϑ
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.
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




 MLX90247C
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MLX90247C
Thermopile w/NTC Thermistor
MLX90247C Electrical Specifications
DC Operating Parameters TA = -40oC to 150oC, (unless otherwise specified)
Parameter
Symbol Test Condition
Min Typ Max Unit
Thermopile Resistance
Rtp @298K
44 59.5 75 k
Sensitivity
S
sensor @298K
black body @299K
29
42
55
µV/K
TC of Sensitivity
TCs @298K
0.1 %/K
Time constant
T
30 ms
Thermistor Value
Rntc @298K
95 100 105 k
Thermal Coefficient NTC (1) βntc 0-50°C (1)
4120 4140 4161 K
(1) Tolerance given between 15°C and 35°C. Typical value corresponds to a relative resistance change of
–4.68%/°C. Definition of β is lnR/(1/T) with T in K. (Naperian logarithm).
Note: when measuring resistances with an ohm meter, please take care that the internal protection diodes,
as indicated in the functional diagram below, are always reverse biased.
ϑ
MLX90247C Absolute Maximum Ratings
Parameter
Operating temperature
Storage temperature
Soldering temperature
Value
-40 ~ 150
-40 ~ 150
<220
Unit
°C
°C
°C
Comment
Keep diode leakage in mind at high temperatures
t<5sec
MLX90247C Discrete Infrared Sensor IC
Page 2
Rev 1.0 17/Feb/01




 MLX90247C
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MLX90247C
Thermopile w/NTC Thermistor
MLX90247C Pinout
Pin Symbol Description
1
OutIr+
Infrared Thermopile positive output
2
Rsens
Thermistor for sensor ambient temperature measurement
3 OutIr- Infrared Thermopile negative output
4 Vss
Thermistor ground / case potential
TO-39 package - connections
1
24
3
Top view = pins down
ML90247C Mechanical Specifications
Parameter
TO-39 specifications
Metal cap
Filling gas
Filter specifications
Transmission
Transmission
Sensor window
FOV
Aperture diameter
Value
Unit
>75 %
<0.5 %
100 °
3.5 mm
Comment
Welded
Nitrogen
7.5µ < λ <13.5µ
0 < λ < 5µ
Full opening angle: Determined by aperture
Default
ESD Precautions Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). Always observe
ESD control procedures whenever handling semiconductor devices.
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.
MLX90247C Discrete Infrared Sensor IC
Page 3
Rev 1.0 17/Feb/01




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