Datasheet

MAX31850/MAX31851
Cold-Junction Compensated, 1-Wire
Thermocouple-to-Digital Converters
7Maxim Integrated
Typical Operating Characteristics
(V
CC
= +3.3V, T
A
= +25NC, unless otherwise noted.)
ADC ACCURACY vs. ADC INPUT
VOLTAGE ACROSS V
CC
MAX31850 toc05
ADC INPUT VOLTAGE (mV)
ADC ACCURACY (°C)
4020
-0.25
-0.20
-0.15
-0.10
-0.05
0
0.05
0.10
0.15
0.20
-0.30
0 60
INTERNAL TEMPERATURE = +25°C
V
CC
= 3.7V
V
CC
= 3.3V
V
CC
= 3.0V
ADC ACCURACY vs. ADC INPUT VOLTAGE
ACROSS TEMPERATURE
MAX31850 toc04
ADC INPUT VOLTAGE (mV)
ADC ACCURACY (°C)
4020
0
0.5
1.0
1.5
2.0
-0.5
0 60
V
CC
= 3.3V
T
A
= +125°C
T
A
= -40°C
T
A
= +85°C
T
A
= +25°C
STANDBY SUPPLY CURRENT
vs. TEMPERATURE
MAX31850 toc02
TEMPERATURE (°C)
STANDBY SUPPLY CURRENT (nA)
12010060 800 20 40-20
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
0
-40
V
CC
= 3.7V
INTERNAL TEMPERATURE
SENSOR ACCURACY
MAX31850 toc03
TEMPERATURE (°C)
MEASUREMENT ERROR (°C)
1008040 600 20-20
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
-0.4
-40 120
V
CC
= 3.3V
ACTIVE SUPPLY CURRENT
vs. TEMPERATURE
MAX31850 toc01
TEMPERATURE (°C)
ACTIVE SUPPLY CURRENT (µA)
100 120806040200-20
200
400
600
800
1000
1200
1400
0
-40
V
CC
= 3.7V