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參數(shù)資料
| 型號： | DS18B20 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | Programmable Resolution 1-Wire Digital Thermometer |
| 中文描述： | 可編程分辨率1-Wire數(shù)字溫度計 |
| 封裝： | TO-92, 3 PIN |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 149K |
| 代理商： | DS18B20 |
1 of 20
043001
FEATURES
Unique 1-wire interface requires only one
port pin for communication
Each device has a unique 64-bit serial code
stored in an on-board ROM
Multi-drop capability simplifies distributed
temperature sensing applications
Requires no external components
Can be powered from data line. Power supply
range is 3.0V to 5.5V
Measures temperatures from –55°C to
+125°C (–67°F to +257°F)
±
0.5
°
C accuracy from –10°C to +85°C
Thermometer resolution is user-selectable
from 9 to 12 bits
Converts temperature to 12-bit digital word in
750 ms (max.)
User-definable nonvolatile alarm settings
Alarm search command identifies and
addresses devices whose temperature is
outside of programmed limits (temperature
alarm condition)
Software compatible with the DS1822
Applications include thermostatic controls,
industrial
systems,
thermometers, or any thermally sensitive
system
consumer
products,
PIN ASSIGNMENT
PIN DESCRIPTION
GND - Ground
DQ
- Data In/Out
V
DD
- Power Supply Voltage
NC
- No Connect
DESCRIPTION
The DS18B20 Digital Thermometer provides 9 to 12–bit centigrade temperature measurements and has
an alarm function with nonvolatile user-programmable upper and lower trigger points. The DS18B20
communicates over a 1-wire bus that by definition requires only one data line (and ground) for
communication with a central microprocessor. It has an operating temperature range of –55°C to +125°C
and is accurate to
±
0.5
°
C over the range of –10°C to +85°C. In addition, the DS18B20 can derive power
directly from the data line (“parasite power”), eliminating the need for an external power supply.
Each DS18B20 has a unique 64-bit serial code, which allows multiple DS18B20s to function on the same
1–wire bus; thus, it is simple to use one microprocessor to control many DS18B20s distributed over a
large area. Applications that can benefit from this feature include HVAC environmental controls,
temperature monitoring systems inside buildings, equipment or machinery, and process monitoring and
control systems.
DS18B20
Programmable Resolution
1-Wire
Digital Thermometer
www.dalsemi.com
8-pin 150-mil SOIC
(DS18B20Z)
TO-92
(DS18B20)
1
(BOTTOM VIEW)
2 3
DALLAS
18B20
1
G
D
V
D
2 3
NC
NC
NC
NC
GND
DQ
V
DD
NC
6
8
7
5
3
1
2
4
D
1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS18B20/GG8 | 制造商:Maxim Integrated Products 功能描述:PROGRAMMABLE RESOLUTION 1-WIRE DIGITAL THERMOMETER - Rail/Tube |
| DS18B20/T&R | 制造商:Maxim Integrated Products 功能描述:IC THERM MICROLAN PROG-RES TO-92 |
| DS18B20/T&R | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| DS18B20_07 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Programmable Resolution 1-Wire Digital Thermometer |
| DS18B20_08 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:1-Wire Digital Thermometer |
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