Digital Thermometers and Thermostats
with SPI/3-Wire Interface
2
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.
Voltage Range on V
DD
 Relative to GND ..............-0.3V to +6.0V
Voltage Range on Any Other Pin Relative to GND ...-0.3V to +6.0V
Continuous Power Dissipation (T
A
 = +70NC)
  FMAX (derate 4.5mW/NC above +70NC) ......................362mW
EEPROM Programming Temperature Range ....-40NC to +85NC
Operating Junction Temperature Range .........-55NC to +125NC
Storage Temperature Range ............................-55NC to +125NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
RECOMMENDED OPERATING CHARACTERISTICS
(T
J
 = -55NC to +125NC, unless otherwise noted.)
DC ELECTRICAL CHARACTERISTICS
(V
DD
 = 1.7V to 3.7V, T
J
 = -55NC to +125NC, unless otherwise noted.)
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage
V
DD
(Note 1)
1.7
3.7
V
Input Logic-High
V
IH
(Note 1)
0.7 x V
DD
V
DD
+ 0.3
V
Input Logic-Low
V
IL
(Note 1)
-0.3
0.3 x V
DD
V
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX31722 Thermometer Error
T
ERR
-40NC to +85NC
Q2.0
NC
-55NC to +125NC
Q3.0
MAX31723 Thermometer Error
T
ERR
0NC to +70NC
Q0.5
NC
-55NC to +125NC
Q2.0
Resolution
9
12
Bits
Conversion Time
t
CONVT
9-bit conversions
25
ms
10-bit conversions
50
11-bit conversions
100
12-bit conversions
200
Logic 0 Output (SDO, TOUT)
V
OL
(Note 2)
0.4
V
Logic 1 Output (SDO)
V
OH
(Note 3)
V
DD
 -
0.4
V
Leakage Current
I
L
-1
+1
FA
Active Current
I
CC
Active temperature conversions (Note 4)
1150
FA
Communication only
100
EEPROM writes (-40NC to +85NC)
1150
EEPROM writes during active temperature
conversions (-40NC to +85NC)
1200
Shutdown Current
I
CC1
2
FA
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