mlx90601b Micrel Semiconductor, mlx90601b Datasheet - Page 6

• Manufacturer Part Number: mlx90601b
• Description: Analog Ir Thermometer Module
• Manufacturer: Micrel Semiconductor

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).
Output waveforms
390109060101
Rev. 004
Applications Information
IROUT output voltage
Object Temperature
4.5
3.5
2.5
1.5
0.5
MLX90601B
4
3
2
1
0
MLX90247
0
Thermisto
IR sensor
versus
5
r
10
15
Object Temperature To (degC)
20
IR+
IR-
Rsens
VSS
CREF
25
30
MLX90601EZA BBA
IRINP
IRINN
TINP
TINN
35
40
EEprom, Control and Support Blocks
OPA
OPA
45
50
55
VSS
A/D
A/D
Digital
60
D/A
D/A
Ta
Page 6 of 8
65
12
Ta
To
COMP
TEMPOUT output voltage
4.5
3.5
2.5
1.5
0.5
Ambient Temperature
4
3
2
1
0
Analog IR thermometer module
MLX90313
Datasheet
-5
0
versus
5
IROUT
TEMPOUT
VDD
REL1
10
Ambient Temperature Ta (degC)
15
MLX90601B
20
25
MLX90601EZA BBA
30
2
1
4
3
5
35
A/D input (optional)
A/D input
Digital input
40
Microcontroller
Application
45
VSS
50
5V
Dec/01
55
60