Data Sheet
MLX90614 family
Single and Dual Zone
Infra Red Thermometer in TO-39
3901090614 Page 25 of 52 Data Sheet
Rev 008 February 28, 2013
The T
RAM
is the linearized Tobj, 16-bit (0x0000…0xFFFF, 0x0000 for -273.15°C and 0xFFFF for
+382.2°C) and the result is a 10-bit word, in which 0x000 corresponds to To
MIN
[°C], 0x3FF corresponds to
To
MAX
[°C] and 1LSB corresponds to
1023
MINMAX
ToTo
[°C].
100
MINMIN
TT
EEPORM
LSB
100
MAXMAX
TT
EEPORM
LSB
The ambient data for PWM is rescaled according to the following equation:
ambient
EEPROM
ambient
PWM
MINRAM
PWM
K
TT
T
Where:
1023
EEPROMEEPROM
MINMAX
ambient
PWM
TT
K
The result is a 10-bit word, where 0x000 corresponds to -38.2°C (lowest Ta that can be read via PWM),
0x3FF corresponds to 125°C (highest Ta that can be read via PWM) and 1LSB corresponds to:
C
TT
LSB
MINMAX
,
1023
1
64
100
2.38
MINMIN
TT
EEPORM
LSB
64
100
2.38
MAXMAX
TT
EEPORM
LSB