mlx90601c ETC-unknow, mlx90601c Datasheet - Page 8

• Manufacturer Part Number: mlx90601c
• Description: Spi Ir Thermometer Module
• Manufacturer: ETC-unknow

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). There are numerous possibilities for the I/O
of which one typical example is shown below. Here the default configuration is used. In the example a
relay is switched with the REL1 output. The threshold for this comparator is programmed in the eeprom.
This means the micro controller can change the threshold, and the MLX90601 can control the alarm
standalone. The second comparator drives the TEMPOUT pin. The SPI connection to the host
microcontroller can be a permanent connection in the application or just a means for in-circuit
programming of the device. Through this connection full access to the internal registers and configuration
settings is achieved. The SPI connection can also be used to directly read output data from the module in
digital form and process this directly in the application. An interesting feature is in-circuit programming of
the calibration constants. It is possible to change the range or emissivity, or whatever setting needs to be
user selectable.
390109060103
Rev. 004
Applications Information
MLX90601C
MLX90247
Thermisto
IR sensor
r
IR+
IR-
Rsens
VSS
VCM25V
CREF
IRINP
IRINN
TINN
TINP
VSS
OPA
OPA
Control and Support Blocks
Page 8 of 12
A/D
A/D D/A
Digital
D/A
To
12
To
COMP
COMP
Datasheet
MLX90313
SPI IR thermometer module
SPI
Micro-controller I/O-port
SPI
VREFP
REL1
TEMPOUT
VDD
4 5 6 7
MLX90601C
10
1
9
3
2
Dec/01
5V
VSS
SW1
SW2
Vref
alarm