Datasheet

PIN SYMBOL DESCRIPTION
1 SDA Data Input/Output Pin for 2-Wire Serial Communication Port. Open-Drain.
2 SCL Clock Input Pin for 2-Wire Serial Communication Port.
3 T
OUT
Thermostat Output Pin. Push-Pull.
4 GND Ground Pin
5 A
2
Address Input Pin
6 A
1
Address Input Pin
7 A
0
Address Input Pin
8 V
DD
Supply Voltage Pin. +2.7V to +5.5V Power-Supply Pin.
Figure 1. Functional Diagram
Figure 2. Typical Operating Curves
ADDRESS
AND
I/O CONTROL
V
DD
SCL
SDA
A
0
A
1
A
2
GND
CONFIGURATION REGISTER
AND CONTROL LOGIC
TEMPERATURE SENSOR
AND ∆Σ ADC
TEMPERATURE REGISTER
T
H
REGISTER
T
L
REGISTER
DIGITAL
COMPARATOR/LOGIC
T
OUT
DS1631
ERROR (°C)
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
0 10 20 30 40 50 60 70
REFERENCE TEMPERATURE (°C)
DS1631/
DS1631
A
+3σ
MEAN
-3σ
ERROR
(°C
)
0.8
-10
REFERENCE TEMPERATURE (°C)
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
0 10 20 30 40 50 60 70 80
DS1731
+3σ
MEAN
-3σ
DS1631/DS1631A/
DS1731
High-Precision Digital
Thermometer and Thermostat
www.maximintegrated.com
Maxim Integrated │ 4
Table 2. Detailed Pin Description