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دیتاشیت - Maxim - High-Precision Digital Thermometer and Thermostat

شماره قطعه DS1731
شرح مفصل High-Precision Digital Thermometer and Thermostat
تولید کننده Maxim 
آرم Maxim 


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DS1731 شرح
DS1631/DS1631A/
DS1731
High-Precision Digital
Thermometer and Thermostat
General Description
The DS1631, DS1631A, and DS1731 digital thermome-
ters provide 9, 10, 11, or 12-bit temperature readings over
a -55°C to +125°C range. The DS1631 and DS1631A
thermometer accuracy is ±0.5°C from 0°C to +70°C with
3.0V ≤ VDD ≤ 5.5V, and the DS1731 accuracy is ±1°C
from -10°C to +85°C with 3.0V ≤ VDD ≤ 5.5V. The ther-
mostat on all three devices provides custom hysteresis
with user-defined trip points (TH and TL). The TH and
TL registers and thermometer configuration settings are
stored in NV EEPROM so they can be programmed prior
to installation. In addition, the DS1631A automatically
begins taking temperature measurements at power-up,
which allows it to function as a stand-alone thermostat.
Pin descriptions for the DS1631/DS1631A/DS1731 are pro-
vided in Table 2 and user-accessible registers are summa-
rized in Table 3. A functional diagram is shown in Figure 1.
Applications
● Network Routers and Switches
● Cellular Base Stations
● Portable Products
● Any Space-Constrained Thermally Sensitive Product
Benefits and Features
● Maximize System Accuracy in Broad Range of
Thermal Management Applications
• Operating Temperature Range: -55°C to +125°C
(-67°F to +257°F)
• DS1631 and DS1631A: ±0.5°C Accuracy over 0°C
to +70°C Range
• DS1731: ±1°C Accuracy over a -10°C to +85°C Range
• User-Selectable Output Resolution from 9 Bits to
12 Bits
● Reduce Cost with No External Components
● Simplify Distributed Temperature-Sensing Applications
with Multidrop Capability
• Up to Eight Devices Can Operate on a 2-Wire Bus
● Flexible and Nonvolatile User-Defined Thermostatic
Modes with Custom Hysteresis
● Available in 8-Pin µSOP and SO (DS1631 and
DS1631A Only) and the 8-Pin DIP (DS1631 Only)
Packages
Pin Configurations
TOP VIEW
SDA 1
SCL 2
TOUT 3
GND 4
+
DS1631
8 VDD
7 A0
6 A1
5 A2
µSOP
(DS1631U+, DS1631AU+, DS1731U+)
SDA 1 +
8 VDD
SCL 2
DS1631
7 A0
TOUT 3
6 A1
GND 4
5 A2
SO (150mil and 208mil)
(DS1631Z+, DS1631S+)
Ordering Information appears at end of data sheet.
See Table 2 for Pin Descriptions.
19-7488; Rev 1; 1/15

قانون اساسیصفحه 14
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