MLX90614 family
Single and Dual Zone
Infra Red Thermometer in TO-39
Features and Benefits
Applications Examples
High precision non-contact temperature
measurements;
Thermal Comfort sensor for Mobile Air
Conditioning control system;
Temperature sensing element for residential,
commercial and industrial building air
conditioning;
Windshield defogging;
Automotive blind angle detection;
Industrial temperature control of moving parts;
Temperature control in printers and copiers;
Home appliances with temperature control;
Healthcare;
Livestock monitoring;
Movement detection;
Multiple zone temperature control – up to 100
sensors can be read via common 2 wires
Thermal relay/alert
Body temperature measurement
Small size, low cost
Easy to integrate
Factory calibrated in wide temperature range:
-40 to 125 ˚C for sensor temperature and
-70 to 380 ˚C for object temperature.
High accuracy of 0.5° over wide temperature
C
range (0..+50° for both Ta and To)
C
High (medical) accuracy calibration optional
Measurement resolution of 0.02°
C
Single and dual zone versions
SMBus compatible digital interface
Customizable PWM output for continuous
reading
Available in 3V and 5V versions
Simple adaptation for 8 to 16V applications
Power saving mode
Different package options for applications and
measurements versatility
Automotive grade
Ordering Information
Part No. MLX90614 X X X
(1) (2) (3)
(1) Supply Voltage:
A - 5V power
(adaptable for 12V)
B - 3V power
1 Functional diagram
MLX90614Axx: Vdd=4.5...5.5V
1 MLX90614
J1
SCL
U1
SCL
Vz
P WM
4
Vss
SDA
2 SDA
Vdd
GND
Vdd
3
C1
0.1uF
CON1
C1 value and type may differ
in different applications
for optimum EMC
MLX90614 connection to SMBus
Figure 1 Typical application schematics
3901090614
Rev 1.0
(2) Number of thermopiles:
A – single zone
B – dual zone
(3) Package type:
A – Filter inside
B – Filter outside
2 General Description
The MLX90614 is an Infra Red thermometer for non
contact temperature measurements. Both the IR sensitive
thermopile detector chip and the signal conditioning ASSP
are integrated in the same TO-39 can.
Thanks to its low noise amplifier, 17-bit ADC and powerful
DSP unit, a high accuracy and resolution of the
thermometer is achieved.
The thermometer comes factory calibrated with a digital
PWM and SMBus output.
As a standard, the 10-bit PWM is configured to
continuously transmit the measured temperature in range
of -20 to 120 ˚C, with an output resolution of 0.14 ˚C.
The POR default is SMBus interface
Page 1 of 35
Data Sheet
14/Sep/2006
