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参数资料
| 型号： | DS75U/T&R |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | Switch/Digital Output Temperature Sensor |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, SQUARE, SURFACE MOUNT |
| 封装： | MICRO MAX PACKAGE-8 |
| 文件页数： | 1/15页 |
| 文件大小： | 338K |
| 代理商： | DS75U/T&R |
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FEATURES
Temperature Measurements Require No
External Components
Measures Temperatures from -55°C to
+125°C (-67°F to +257°F)
±2°C Accuracy Over a -25°C to +100°C
Range
Thermometer Resolution is User-
Configurable from Nine (Default) to 12 Bits
(0.5
°C to 0.0625°C Resolution)
9-Bit Conversion Time is 150ms (Max)
Thermostatic Settings are User-Definable
Data is Read/Written Via 2-Wire Serial
(Interface (SDA and SCL Pins)
Multidrop Capability Simplifies Distributed
Temperature-Sensing Applications
Wide Power-Supply Range (+2.7V to
+5.5V).
Pin/software Compatible with the LM75
Available in 8-Pin
μMAX and SO
Packages. See Table 1 for Ordering
Information
Applications Include Personal Computers,
Cellular Base Stations, Office Equipment, or
Any Thermally Sensitive System
PIN ASSIGNMENT
PIN DESCRIPTION
SDA
–
Open-Drain Data I/O
SCL
–
Clock Input
GND –
Ground
O.S.
–
Open-Drain Thermostat Output
A0
–
Address Input
A1
–
Address Input
A2
–
Address Input
V DD
–
Power Supply
DESCRIPTION
The DS75 digital thermometer and thermostat provides 9, 10, 11, or 12-bit digital temperature readings
over a -55°C to +125°C range with
±2°C accuracy over a -25°C to +100°C range. At power-up, the
DS75 defaults to 9-bit resolution for software compatibility with the LM75.
Communication with the
DS75 is achieved via a simple 2–wire serial interface. Three address pins allow up to eight DS75 devices
to operate on the same 2–wire bus, which greatly simplifies distributed temperature sensing applications.
The DS75 thermostat has a dedicated open–drain output (O.S.) and programmable fault tolerance, which
allows the user to define the number of consecutive error conditions that must occur before O.S is
activated.
There are two thermostatic operating modes that control thermostat operation based on user-
defined trip-points (TOS and THYST).
A block diagram of the DS75 is shown in Figure 1 and detailed pin descriptions are given in Table 2.
DS75
Digital Thermometer and Thermostat
www.maxim-ic.com
DS75U+ (
μMAX)
SCL
VDD
A0
A1
A2
GND
O.S.
SDA
6
8
7
5
3
1
2
4
DS75
DS75S+ (8-Pin SO — 150mil)
SCL
VDD
A0
A1
A2
GND
O.S.
SDA
6
8
7
5
3
1
2
4
DS75
MAX is a registered trademark of Maxim Integrated Products, Inc.
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