MLX90601C Datasheet, PDF (3/12 Pages) List of Unclassifed Manufacturers – SPI IR thermometer module

Datasheet MLX90601C
SPI IR thermometer module
Parameter
Fall time*
Output voltage high
Output voltage low
*Without external loading
Symbol Test Condition Min
90% to 10% of Vh 13.3
Vh
Ihigh=2mA
4
Vl
Ilow=2mA
Typ
Max
100
1
Unit
µs
V
V
General Description
MLX90601 is a versatile IR thermometer built
around the MLX90247 Discrete IR thermopile
sensor with on-chip PTC and the MLX90313
Programmable IR sensor interface.
MLX90313 amplifies the signals coming from
MLX90247 and converts them to digital by
means of two high performance, low noise,
chopper stabilized amplifiers and the 12-bit
analog to digital converter. The digital unit on
the interface then performs the ambient
compensation of the IR signal. This results in
two temperature signals, one representing the
temperature of the object the IR sensor is
pointed at (Tobject) and one representing the
temperature of the sensor (Tambient). Both
signals are then linearised and stored in
dedicated registers, which are accessible
through SPI (Tobject at register address 09h,
Tambient at register address 0Ah).
The REL1 output is directly connected to the
open drain relay driver output of the comparator
circuitry inside MLX90313. The TEMPOUT pin
is connected to a pseudo push-pull output stage
of the second comparator. Both comparators
can act on the linearised object or ambient
temperature and have programmable hysteresis
values and polarity settings.
Unique Features
MLX90601 is an automotive grade IR
thermometer that can be fitted to any contactless
temperature measurement application by means
of the programmable Interfaces. The module is
designed to cope with all standard qualification
tests oriented towards the harsh automotive
environment.
If so desired, all temperature ranges and
comparator settings can be adapted to the
application.
MLX90601 is delivered calibrated, relieving the
customer of IR calibration.
Absolute Maximum Ratings
Supply Voltage, VDD (overvoltage)
Supply Voltage, VDD (operating)
Reverse Voltage Protection
Supply Current, IDD @25°C
Output Current, IOUT
Operating Temperature Range, TA
Storage Temperature Range, TS
ESD Susceptibility
80V
4.5V - 6V
-5V
6 mA
mA
-40°C - 125°C
-55°C - 150°C
4kV
Pinout
Pin Symbol
1 REL1
2 VSS
3 VDD
4 SDIN
5 SDOUT
6 CSB
7 SCLK
8 IROUT
9 VREF
10 TEMPOUT
Description
Open drain, relay driver
comparator output
Ground
Supply pin
SPI data input
SPI data output
SPI chip select input
SPI clock input
Object temperature output
Reference voltage
Ambient temperature output
Detailed Description
Analog Features
Supply
The module should be supplied directly with a
nominal 5V regulated supply on pin VDD. (4.5V
– 6V)
The power-on reset circuitry is completely
internal to MLX90313. The module is fully
operational 16 ms from the time the supply
390109060103
Rev. 004
Page 3 of 12
Dec/01