MLX90313KDF ETC [List of Unclassifed Manufacturers], MLX90313KDF Datasheet - Page 32

• Manufacturer Part Number: MLX90313KDF
• Description: Programmable IR Sensor Interface
• Manufacturer: ETC [List of Unclassifed Manufacturers]

Support Tools
In a short time Melexis will provide a demo board which can demonstrate all MLX90313’s features. This
will come with software which allows easy configuration of the MLX90313. Please have a look at
www.melexis.com
ESD Precautions
Electronic semiconductor products are sensitive to Electro Static Discharge (ESD).
Always observe Electro Static Discharge control procedures whenever handling semiconductor products.
FAQ
Q: When is the MLX90313 available ?
A: Currently Melexis only delivers the MLX90313 as part of the MLX90601x Infrared Thermometer
module. Please refer to MLX90601 datasheet for details. Samples can be obtained Q3/2001, full
production starts Q4/2001.
Glossary of Terms
ADC
Ambient
Compensation
ASIC
Band-gap
Chopper
compensated
amplifier
DAC
Differential
nonlinearity (DNL)
ECC
Eeprom
Hamming coding
Integral nonlinearity
(INL)
IR
Linearisation
LSB,MSB
NTC
PGA
MLX90313 Programmable IR sensor Interface
3901090313
for latest info.
Analog-to-digital converter
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.
application specific integrated circuit
Circuit to generate accurate absolute voltages. Usually they are independent of
temperature and supply voltage, like the one used in the MLX90313
Special amplifier configuration aimed at ultra low offset
Digital-to-analog converter
The deviation of any code from an ideal 1 LSB step
Error Checking and Correction
non-volatile memory that can be electrically erased and rewritten. This
type of memory is used to store configuration and calibration data needed
by the MLX90313.
By giving a message a extra number of bits (= so called hamming bits), one can
not only detect, but also correct a error that occurs in the stored data or the
hamming bits. The eeprom memory of the MLX90313 uses hamming coding to do
a error check and correction if needed and possible.
This is the maximum deviation from the ideal output curve and the actual output
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.
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.
Least Significant Bit, Most Significant Bit
See Thermistor.
Programmable gain amplifier.
Page 32
Programmable IR Sensor Interface
MLX90313
Rev 1.0 21-July-2001