MLX90247_04 ETC2 [List of Unclassifed Manufacturers], MLX90247_04 Datasheet

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MLX90247_04

Manufacturer Part Number
MLX90247_04
Description
Discrete Infrared Thermopile Detectors
Manufacturer
ETC2 [List of Unclassifed Manufacturers]
Datasheet
Features and Benefits
Ordering Information
Part No
Notice: In case sensor is used in automotive applications, Melexis must be informed.
Applications
1. Functional Diagram
3901090247
Rev. 003
MLX90247
MLX90247
MLX90247
MLX90247
Solid state thermopile sensor
On-chip thermistor for ambient temperature compensation
High reliability and long-term stability
Very high ESD protection – 7 kV on all pins (only for
MLX90247BAA and MLX90247BAL)
Low cost, small size
Automotive contactless temperature sensing.
IR thermometers
Gas analysis equipment
Occupancy detection
40 uV/K
24 kOhm
Thermopile
E (-40C to +85C)
E (-40C to +85C)
E (-40C to +85C)
E (-40C to +85C)
PTC
60 kOhm
Ta
Socket
Suffix
1
3
2
4
Out IR+
Rsense
Out IR-
Package code
VSS
SF(TO-39)
SF(TO-39)
SF(TO-39)
SF(TO-39)
2. Description
At the heart of the MLX90247 thermopile sensors is a
silicon die with a central micromachined membrane
surrounded by a bulk silicon edge. The hot junctions of the
thermopile are positioned near the center of the membrane
and the cold junctions are located above the bulk silicon
edge. Infrared irradiation of the low thermal conductivity
membrane creates a temperature difference between the
membrane and the surrounding bulk silicon. The resulting
thermopile voltage is a function of the temperature
difference
Measurement of the absolute temperature of the object is
possible
temperature of the sensor. The exact temperature of the
sensor is measured by a PTC thermistor integrated in the
bulk silicon edge. No supply voltage is needed for the
thermopile.
The sensor and thermistor can be used independently of
each other if desired, as the thermopile potential is floating.
The MLX90247DSL (BAL) sensor IC is similar to
MLX90247DSA (BAA) but with smaller aperture, thus
resulting in narrower field of view (FOV).
Discrete Infrared Thermopile Detectors
Type Description
DSA
DSL
BAA
BAL
Page 1 of 10
Large aperture (3.5mm) thermopile detector with on-chip PTC
thermistor, floating thermopile outputs.
Small aperture (2.5mm) thermopile detector with on-chip PTC
thermistor, floating thermopile outputs.
Large aperture (3.5mm) thermopile detector with on-chip PTC
thermistor, floating thermopile outputs. Excellent ESD
Small aperture (2.5mm) thermopile detector with on-chip PTC
thermistor, floating thermopile outputs. Excellent ESD
by
between
relating
MLX90247 family
the
the
object
thermopile
and
signal
the
Data Sheet
sensor.
to
Jun/04
the

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MLX90247_04 Summary of contents

Page 1

Features and Benefits Solid state thermopile sensor On-chip thermistor for ambient temperature compensation High reliability and long-term stability Very high ESD protection – all pins (only for MLX90247BAA and MLX90247BAL) Low cost, small size Ordering Information Suffix ...

Page 2

Table of contents 1. FUNCTIONAL DIAGRAM ............................................................................................................. 1 2. DESCRIPTION............................................................................................................................... 1 3. GLOSSARY OF TERMS ............................................................................................................... 3 4. PIN DEFINITIONS AND DESCRIPTIONS .................................................................................... 3 5. MLX90247 SPECIFICATIONS ...................................................................................................... 3 6. UNIQUE FEATURES..................................................................................................................... 5 7. APPLICATIONS INFORMATION.................................................................................................. 6 8. RELIABILITY INFORMATION ...

Page 3

Glossary of Terms IR: Infrared. Every object emits infrared radiation in relation to its temperature. This effect can be used to measure the temperature without the need for physical contact. PTC: On-chip thermistor which resistance increases with rising temperature ...

Page 4

NEP All Time constant All Sensitivity TC All Thermistor value All Thermistor TC 1 All Thermistor TC 2 All DSA and DSL Withstand ESD voltage BAA and BAL NOTE: The thermistor resistance can be calculated using following expresion ...

Page 5

Absolute Maximum Ratings Parameter Storage Temperature Range Applied DC voltage Applied DC voltage Exceeding the absolute maximum ratings may cause permanent damage. maximum-rated conditions for extended periods may affect device reliability. 6. Unique features - Fully CMOS compatible process - ...

Page 6

Applications information As shown in the internal schematics drawings in paragraph 5, the MLX90247BAA and BAL use a die with additional protection diodes for very high ESD performance. The configuration of the protection diodes is such that the MLX90247BAA ...

Page 7

Reliability Information Melexis Infrared sensors are sealed to withstand a fine and gross leak test according MIL883 Method 1014 (Seal) / JESD22-A109 (Hermeticity). Please contact Melexis for specific information using MLX90247 sensors in automotive applications. 9. ESD Precautions Electronic ...

Page 8

Package information Housing specifications (TO39) Metal cap Welded TO39 header Au plating Filling gas Nitrogen Marking Part No Type Package Code MLX90247 DSA SF(TO-39), 3,5mm MLX90247 DSL SF(TO-39), 2,5mm MLX90247 BAA SF(TO-39), 3,5mm MLX90247 BAL SF(TO-39), 2,5mm XXX- last ...

Page 9

Package Outline 3901090247 Rev. 003 MLX90247 family Discrete Infrared Thermopile Detectors DSL and BAL DSA and BAA Page Data Sheet Jun/04 ...

Page 10

Disclaimer Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. Melexis makes no warranty, express, statutory, implied description regarding the information set forth herein or regarding the ...

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