Datasheet MLX90601B
Analog IR thermometer module
Applications Information
Connection of the MLX90601 module into an application is straightforward. The 5V regulated supply
should be connected between pin 3 (VDD) and pin 5 (VSS).
The outputs can be measured relative to VSS at pin 1 (IROUT) for Tobject and pin 2 (TEMPOUT) for
Tambient, e.g. by means of a voltmeter. In an actual application the module outputs can be directly
connected to the A/D inputs of a microcontroller, e.g. as a replacement for a conventional temperature
sensor.
In many applications, the ambient temperature of the sensor is not needed. In this case, pin 2 can simply
be left open.
The REL1 signal at pin 4 can be used as input for a digital I/O or to drive a relay (not shown).
Application
Microcontroller
IR sensor
MLX90313
IR+
IRINP
IRINN
TINP
TEMPOUT
IROUT
2
Ta
To
OPA
OPA
A/D D/A
A/D input (optional)
IR-
Thermisto
r
Digital
Rsens
VSS
1
4
A/D D/A
Ta
A/D input
TINN
MLX90247
12
COMP
REL1
Digital input
EEprom, Control and Support Blocks
3
5
CREF
VDD
5V
VSS
VSS
MLX90601B
Output waveforms
IROUT output voltage
versus
TEMPOUT output voltage
versus
Object Temperature
Ambient Temperature
MLX90601EZA BBA
MLX90601EZA BBA
4.5
4.5
4
3.5
3
4
3.5
3
2.5
2
2.5
2
1.5
1
1.5
1
0.5
0
0.5
0
0
5
10
15
20
25
30
35
40
45
50
55
60
65
-5
0
5
10
15
20
25
30
35
40
45
50
55
60
Object Temperature To (degC)
Ambient Temperature Ta (degC)
390109060101
Rev. 004
Page 6 of 8
Dec/01