Datasheet

MAX31850/MAX31851
Cold-Junction Compensated, 1-Wire
Thermocouple-to-Digital Converters
4Maxim Integrated
THERMAL CHARACTERISTICS (continued)
(3.0V P V
DD
P 3.6V, T
A
= -40NC to +125NC, unless otherwise noted.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX31851R Thermocouple
Temperature Gain and Offset
Error (10.506FV/NC nominal
sensitivity) (Note 11)
T
THERMOCOUPLE
= -50NC to +100NC,
T
A
= 0NC to +70NC (Note 12)
-2 +2
NC
T
THERMOCOUPLE
= -50NC to +700NC,
T
A
= -20NC to +85NC (Note 12)
-3 +3
T
THERMOCOUPLE
= +700NC to +1768NC,
T
A
= -20NC to +85NC (Note 12)
-5 +5
T
THERMOCOUPLE
= -50NC to +1768NC,
T
A
= -40NC to +125NC (Note 12)
-7 +7
MAX31851S Thermocouple
Temperature Gain and Offset
Error (9.587FV/NC nominal
sensitivity) (Note 11)
T
THERMOCOUPLE
= -50NC to +150NC,
T
A
= 0NC to +70NC (Note 12)
-2 +2
NC
T
THERMOCOUPLE
= -50NC to +700NC,
T
A
= -20NC to +85NC (Note 12)
-3 +3
T
THERMOCOUPLE
= +700NC to +1768NC,
T
A
= -20NC to +85NC (Note 12)
-5 +5
T
THERMOCOUPLE
= -50NC to +1768NC,
T
A
= -40NC to +125NC (Note 12)
-7 +7
Thermocouple Temperature Data
Resolution
0.25 NC
Thermocouple Temperature Data
Long-Term Drift
Hot junction temperature = +400NC ±0.24 NC
Internal Cold-Junction
Temperature Error
T
A
= -40NC to +100NC (Note 13) -2 +2 NC
Cold-Junction Temperature Data
Resolution
T
A
= -40NC to +125NC 0.0625 NC
Temperature Conversion Time
(Thermocouple, Cold Junction,
Fault Detection)
t
CONV
(Note 14) 72 100 ms