Datasheet

(V
CC
= +3.3V, T
A
= +25°C, unless otherwise noted.)
INTERNAL TEMPERATURE SENSOR
ACCURACY
MAX31855 toc02
TEMPERATURE (°C)
MEASUREMENT ERROR (°C)
806020 400-20
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
-0.2
-40 100
V
CC
= 3.3V
NOTE: THIS DATA WAS TAKEN
IN PRECISION BATH SO HIGH
TEMPERATURE LIMIT IS 90°C
ADC ACCURACY vs. ADC INPUT VOLTAGE
ACROSS TEMPERATURE
MAX31855 toc03
ADC INPUT VOLTAGE (mV)
ADC ACCURACY (°C)
4020
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
-0.7
0 60
AT -40°C
V
CC
= 3.3V
AT +85°C
AT +25°C
ADC ACCURACY vs. ADC INPUT VOLTAGE
ACROSS V
CC
MAX31855 toc04
ADC INPUT VOLTAGE (mV)
ADC ACCURACY (°C)
4020
-0.9
-0.8
-0.7
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
-1.0
0 60
V
CC
= 3.6V
V
CC
= 3.3V
V
CC
= 3.0V
INTERNAL TEMPERATURE = +25°C
SUPPLY CURRENT vs. TEMPERATURE
MAX31855 toc01
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
100 120806040200-20
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0
-40
V
CC
= 3.6V
V
CC
= 3.3V
V
CC
= 3.0V
Maxim Integrated │ 6
www.maximintegrated.com
MAX31855 Cold-Junction Compensated
Thermocouple-to-Digital Converter
Typical Operating Characteristics