Datasheet
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°C)
SO (derate 5.9mW/°C above +70°C).......................470.6mW
ESD Protection (All Pins, Human Body Model)....................±2kV
Operating Temperature Range......................... -40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range ........................... -65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
Soldering Temperature (reflow) ......................................+260°C
SO
Junction-to-Ambient Thermal Resistance (θ
JA
) ........170°C/W
Junction-to-Case Thermal Resistance (θ
JC
) ...............40°C/W
(Note 1)
(T
A
= -40°C to +125°C, unless otherwise noted.)
(3.0V ≤ V
CC
P 3.6V, T
A
= -40°C to +125°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Power-Supply Voltage V
CC
(Note 2) 3.0 3.3 3.6 V
Input Logic 0 V
IL
-0.3 +0.8 V
Input Logic 1 V
IH
2.1
V
CC
+
0.3
V
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Power-Supply Current I
CC
900 1500 µA
Thermocouple Input Bias Current
T
A
= -40°C to +125°C, 100mV across the
thermocouple inputs
-100 +100 nA
Power-Supply Rejection -0.3 °C/V
Power-On Reset Voltage
Threshold
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
MAX31855 Cold-Junction Compensated
Thermocouple-to-Digital Converter
www.maximintegrated.com
Maxim Integrated
│
2
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation 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
Recommended Operating Conditions
DC Electrical Characteristics