MLX90614 family
Single and Dual Zone
Infra Red Thermometer in TO-39
6 Pin definitions and descriptions
1 - SCL/
2 - PWM/
SDA
Vz
3 - VDD
4 - VSS
Top view
Figure 2: Pin description
Pin Name
Function
VSS
Ground. The metal can is also connected to this pin.
Serial clock input for 2 wire communications protocol. 5.7V zener
is available at this pin for connection of external bipolar transistor
to MLX90614A to supply the device from external 8 -16V source.
SCL / Vz
Digital input / output. In normal mode the measured object
temperature is available at this pin Pulse Width Modulated.
In SMBus compatible mode automatically configured as open
drain NMOS.
PWM / SDA
VDD
External supply voltage.
Table 2: Pin description MLX90614
Note: for +12V (+8…+16V) powered operation refer to the Application information section. For EMC and
isothermal conditions reasons it is highly recommended not to use any electrical connection to the metal can
except by the Vss pin.
With the SCL/Vz and PWM/SDA pins operated in 2-wire interface mode, the input Schmidt trigger function is
automatically enabled.
3901090614
Rev 003
Page 5 of 40
Data Sheet
03/Oct/2007
MELEXIS [ Melexis Microelectronic Systems ]
