MLX90601 family
IR thermometer modules
3901090601
Page 1 of 51
Jan/03
Rev. 008
Features and Benefits
Remote temperature measurement
Fully linearized signals
Analog voltage output, digital PWM output and SPI interface
Factory calibrated
Rigid PCB with automotive protection circuitry, or flex circuit board.
EEPROM ECC
Open drain relay driver output
Applications
Automotive climate control
Toasters, microwave ovens and other applications that require temperature control
Residential, commercial climate control and occupancy detection
Industrial temperature transducer and monitoring applications
Ordering Information
Suffix
Part No
Ta Package
Type
Description
PCB
MLX90601
E ZA
BAA
8 bit Analog To 20C /120C, Ta 0C..50C
Rigid
MLX90601
E
ZA
DAA
PWM, To 20C /120C, Ta 0C..50C
Rigid
MLX90601 E
ZA
CAA
Digital SPI/PWM To 20C/120C, Ta 0C..50C, 5V supply
Rigid
MLX90601
K
ZA
BKA
8 bit Analog To 20C /120C, Ta 20C..85C, 5V supply
Flex
MLX90601
K
ZA
CKA
Digital SPI/PWM To 20C/120C, Ta -20C..85C, 5V supply
Flex
Notes: Ta ambient operating temperature range
MLX90601EZA-XXX: -40C / +85C
MLX90601KZA-XXX: -40C / +125C
1 Functional Diagrams
MLX90601 EZA-BAA
MLX90601 EZA-CAA
MLX90601 EZA-DAA
MLX90601 KZA-BKA
MLX90601 KZA-CKA
IRINP
TINN
TINP
IRINN
IROUT
VDD
CREF
VSS
MLX90313
R3
IROUT
IR+
Rsens
IR-
VSS
MLX90247
TEMPOUT
C3
5V
VSS/GND
C7
R1C
REL1
R1D
C6
REL1
TEMPOUT
IRINP
TINN
TINP
IRINN
VDD
CREF
VSS
MLX90313
R3
DOUT
CS
VSS/GND
SDO
SDI
SCLK
C3
5V
DIN
SCLK
CS
TEMPOUT
IROUT
REL1
REL
VREFP
VREF
TEMPOUT
IROUT
IR+
Rsens
IR-
VSS
MLX90247
MLX90601 family
IR thermometer modules
3901090601
Page 2 of 51
Jan/03
Rev. 008
2 Description
The MLX90601 Family modules are versatile IR
thermometer modules, which perform signal
conditioning,
linearisation
and
ambient
temperature compensation. The modules are
built around the MLX90313 IR sensor interface,
which uses high performance chopper stabilized
amplifiers,
providing
excellent
noise
performance. The sensing element is the
MLX90247 discrete IR thermopile sensor.
The modules are delivered factory calibrated.
The output signals can be analog voltage
outputs; PWM coded digital outputs, or a bi-
directional SPI compatible serial interface. All
output signals are linear with the applied
temperature.
All modules feature the open drain relay driver
output available in MLX90313.
Several types of modules are available. First
types
are
the
modules
for
automotive
applications,
which
have
additional
ESD
protection circuitry on board. These modules can
have an analog voltage output (MLX90601EZA-
BAA), or a digital PWM coded output
(MLX90601EZA-DAA). The substrate is in this
case a FR4 PCB with a 5 pin through-hole
connector.
Alternatively there are some modules targeted
for industrial or consumer applications. These
modules can have also analog outputs
(MLX90601KZA-BKA)
or
PWM
outputs
(MLX90601KZA-CKA and MLX90601EZA-CAA).
All three modules have a SPI interface available
for full programmability.
The MLX90601KZA-BKA and MLX90601KZA-
CKA are built on a flexible polyamide substrate,
making building in the sensor very easy.
The user can choose now the most suited
module depending on electrical and mechanical
needs.
MLX90601 family
IR thermometer modules
3901090601
Page 3 of 51
Jan/03
Rev. 008
CONTENTS
1
FUNCTIONAL DIAGRAMS .............................................................................................................. 1
2
DESCRIPTION ................................................................................................................................. 2
3
GLOSSARY OF TERMS .................................................................................................................. 5
4
ABSOLUTE MAXIMUM RATINGS ................................................................................................... 6
5
MLX90601 ELECTRICAL SPECIFICATIONS ................................................................................... 6
6
GENERAL DESCRIPTION ............................................................................................................... 8
6.1
T
HEORY OF OPERATION
.............................................................................................................................8
6.2
S
ENSOR CHARACTERISTICS
........................................................................................................................8
6.3
A
CCURACY
...............................................................................................................................................8
7
MLX90601EZA-BAA ...................................................................................................................... 10
7.1
K
EY PROPERTIES
.....................................................................................................................................10
7.2
G
ENERAL DESCRIPTION
...........................................................................................................................10
7.3
P
HYSICAL OUTLINE
.................................................................................................................................12
7.4
P
IN
-
OUT AND PIN DESCRIPTIONS
..............................................................................................................12
7.5
E
LECTRICAL SPECIFICATIONS
..................................................................................................................13
7.6
C
ALIBRATION DETAILS
............................................................................................................................13
7.7
A
PPLICATIONS INFORMATION
..................................................................................................................14
8
MLX90601EZA-DAA ...................................................................................................................... 15
8.1
K
EY PROPERTIES
.....................................................................................................................................15
8.2
G
ENERAL DESCRIPTION
...........................................................................................................................15
8.3
P
HYSICAL OUTLINE
.................................................................................................................................17
8.4
P
IN
-
OUT AND PIN DESCRIPTIONS
..............................................................................................................18
8.5
E
LECTRICAL SPECIFICATIONS
..................................................................................................................19
8.6
C
ALIBRATION DETAILS
............................................................................................................................19
8.7
A
PPLICATIONS INFORMATION
..................................................................................................................20
9
MLX90601EZA-CAA ...................................................................................................................... 21
9.1
K
EY PROPERTIES
.....................................................................................................................................21
9.2
G
ENERAL DESCRIPTION
...........................................................................................................................21
9.3
S
ERIAL
P
ERIPHERAL
I
NTERFACE
(SPI) .....................................................................................................23
9.4
P
HYSICAL OUTLINE
.................................................................................................................................26
9.5
P
IN
-
OUT AND PIN DESCRIPTIONS
..............................................................................................................26
9.6
E
LECTRICAL SPECIFICATIONS
..................................................................................................................28
9.7
C
ALIBRATION DETAILS
............................................................................................................................28
9.8
A
PPLICATIONS INFO
................................................................................................................................29
10
MLX90601KZA-BKA ...................................................................................................................... 30
10.1
K
EY PROPERTIES
.....................................................................................................................................30
10.2
G
ENERAL DESCRIPTION
...........................................................................................................................30
10.3
S
ERIAL
P
ERIPHERAL
I
NTERFACE
(SPI) .....................................................................................................32
10.4
P
HYSICAL OUTLINE
.................................................................................................................................35
10.5
P
IN
-
OUT AND PIN DESCRIPTIONS
..............................................................................................................35
10.6
E
LECTRICAL SPECIFICATIONS
..................................................................................................................36
10.7
C
ALIBRATION DETAILS
............................................................................................................................37
MLX90601 family
IR thermometer modules
3901090601
Page 4 of 51
Jan/03
Rev. 008
10.8
A
PPLICATIONS INFORMATION
..................................................................................................................37
11
MLX90601KZA-CKA ...................................................................................................................... 39
11.1
K
EY PROPERTIES
.....................................................................................................................................39
11.2
G
ENERAL DESCRIPTION
...........................................................................................................................39
11.3
S
ERIAL
P
ERIPHERAL
I
NTERFACE
(SPI) .....................................................................................................41
11.4
P
HYSICAL OUTLINE
.................................................................................................................................44
11.5
P
IN
-
OUT AND PIN DESCRIPTIONS
..............................................................................................................44
11.6
E
LECTRICAL SPECIFICATIONS
..................................................................................................................45
11.7
C
ALIBRATION DETAILS
............................................................................................................................46
11.8
A
PPLICATIONS INFORMATION
..................................................................................................................46
12
ESD PRECAUTIONS...................................................................................................................... 47
13
RELIABILITY INFORMATION ........................................................................................................ 47
14
FAQ................................................................................................................................................ 47
15
APPENDIX A: DIGITAL INTERFACING TO "NON-FLEX" IR MODULES ...................................... 49
15.1
C
OMPONENT REFERENCES
.......................................................................................................................49
15.2
SPI
C
OMMUNICATION CABLE PIN
-
OUT
.....................................................................................................50
16
DISCLAIMER ................................................................................................................................. 51
MLX90601 family
IR thermometer modules
3901090601
Page 5 of 51
Jan/03
Rev. 008
3 Glossary of Terms
ADC: Analog to Digital Converter
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.
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.
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.
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
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