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MLX90601B

更新时间： 2024-02-26 16:46:49
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麦瑞 - MICREL /
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8页 116K
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Analog IR thermometer module

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MLX90601B 技术参数

生命周期：ActiveReach Compliance Code：compliant
风险等级：5.84Base Number Matches：1

MLX90601B 数据手册

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Datasheet MLX90601B  
Analog IR thermometer module  
Glossary of Terms  
ESD Precautions  
ADC: Analog to Digital Converter  
Electronic semiconductor products are sensitive  
to Electro Static Discharge (ESD).  
Always observe Electro Static Discharge control  
procedures whenever handling semiconductor  
products.  
Ambient Compensation:The IR signal captured  
by a thermopile sensor is not only dependent  
on the temperature of the object (Tobject) but  
also on the temperature of the sensor itself.  
Therefore the IR signal is compensated for  
this effect by means of the measured sensor  
temperature (Tambient). This rather complex  
calculation is performed in the linearisation  
unit of MLX90313.  
Chopper Amplifier: Special amplifier  
configuration aimed at ultra low offset.  
DAC: Digital to Analog Converter.  
EEprom: Non-volatile memory that can be  
electrically erased and rewritten. This type of  
memory is used to store configuration and  
calibration data for the module.  
FAQ  
Q: What is the accuracy?  
A: For an object temperature range between  
5°C and 60°C the accuracy of measurement  
is ±1°C. For the wider object temperature  
range version (-20°C/120°C) the accuracy of  
measurement is ±2°C.  
Q: What is FOV?  
A: The FOV or Field Of View is a definition of  
the area the sensor is ‘seeing’. The sensor  
will detect radiation coming in at angles,  
relative to the sensor’s central axis, from 0° to  
35°C. The full viewing angle is thus 70°.  
ECC: Error Checking and Correction. The  
EEprom on board of MLX90313 is equipped  
with a checking and correction feature based  
on the Hamming Code method.  
IR: Infrared. Every object emits infrared  
radiation in relation to its temperature. This  
effect can be used to measure this  
temperature without the need for physical  
contact.  
Q: What is the useful temperature range?  
A: There are two temperature ranges of interest;  
the temperature of the object (or target),  
which you are trying to measure and the  
temperature of the sensor. The sensor  
temperature, called Tambient, should be  
between 0°C and 50°C. Outside this range  
the ambient temperature compensation will  
no longer work and calculation of the object’s  
temperature will no longer be correct. The  
TEMPOUT output will saturate under this  
condition. The object temperature, called  
Tobject, should be between 5°C and 60°C.  
(-20°C/120°C for wide range version)  
Outside this range the IROUT output will  
saturate.  
Linearisation: The signal from a thermopile is not  
linear with the object temperature.  
MLX90313 is therefore equipped with a  
digital calculation unit that produces an  
output that is linear with the object  
temperature.  
POR: Power-on reset: Reset circuit that starts  
the digital system in a known state whenever  
the supply voltage is cycled  
PSSR: Power Supply Rejection Ratio: Measure  
for an amplifier’s immunity to disturbances on  
the supply connections.  
PTC: See Thermistor  
Ta, Tambient: The temperature of the IR sensor.  
Target: or Object: The object the IR module is  
aimed at.  
Q: Can the temperature ranges be changed?  
A: Yes, MLX90313 is a programmable device.  
Melexis selected a limited set of standard  
ranges that will fit the majority of applications  
in order to limit delivery times. However, if  
necessary, the ranges can be adapted for  
any particular application. Contact your sales  
representative for more information.  
Thermistor: Temperature dependant resistor.  
Basically there are 2 types. The types that  
increase their resistance with rising  
temperature are PTC (positive thermal  
coefficient) type. The ones that decrease  
their resistance with rising temperature we  
call NTC (negative thermal coefficient) type.  
The MLX90313 can work with both types.  
The MLX90601 modules are equipped with  
sensors that use PTCs.  
To, Tobject: The temperature of the object one  
wishes to measure with the module  
390109060101  
Rev. 004  
Page 7 of 8  
Dec/01  
1...45678

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