MAX31855
Cold-Junction Compensated
Thermocouple-to-Digital Converter
2
Maxim Integrated
Supply Voltage Range (V
CC
to GND) ..................-0.3V to +4.0V
All Other Pins ........................................... -0.3V to (V
CC
+ 0.3V)
Continuous Power Dissipation (T
A
= +70
N
C)
SO (derate 5.9mW/
N
C above +70
N
C) .......................470.6mW
ESD Protection (All Pins, Human Body Model) ..................±2kV
Operating Temperature Range ........................-40
N
C to +125
N
C
Junction Temperature .....................................................+150
N
C
Storage Temperature Range ..........................-65
N
C to +150
N
C
Lead Temperature (soldering, 10s) ................................+300
N
C
Soldering Temperature (reflow) .....................................+260
N
C
SO
Junction-to-Ambient Thermal Resistance (
B
JA
) ........170
N
C/W
Junction-to-Case Thermal Resistance (
B
JC
) ...............40
N
C/W
ABSOLUTE MAXIMUM RATINGS
Note 1:
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial
.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
PACKAGE THERMAL CHARACTERISTICS (Note 1)
RECOMMENDED OPERATING CONDITIONS
(T
A
= -40
N
C to +125
N
C, unless otherwise noted.)
DC ELECTRICAL CHARACTERISTICS
(3.0V
P
V
CC
P
3.6V, T
A
= -40
N
C to +125
N
C, unless otherwise noted.)
PARAMETER
SYMBOL
V
CC
V
IL
CONDITIONS
MIN
3.0
-0.3
TYP
3.3
MAX
3.6
+0.8
V
CC
+
0.3
UNITS
V
V
Power-Supply Voltage
Input Logic 0
(Note 2)
Input Logic 1
V
IH
2.1
V
PARAMETER
SYMBOL
I
CC
CONDITIONS
MIN
TYP
900
MAX
1500
UNITS
F
A
Power-Supply Current
Thermocouple Input Bias Current
T
A
= -40
N
C to +125
N
C, 100mV across the
thermocouple inputs
-100
+100
nA
Power-Supply Rejection
Power-On Reset Voltage
Threshold
-0.3
N
C/V
V
POR
(Note 3)
2
2.5
V
Power-On Reset Voltage
Hysteresis
0.2
V
Output High Voltage
V
OH
I
OUT
= -1.6mA
V
CC
-
0.4
V
Output Low Voltage
V
OL
I
OUT
= 1.6mA
0.4
V