您的位置:笔笔发 物料系统 传感器 正文
内容搜索
笔笔发:技术产业信息平台----成就有识之士创业梦想的殿堂
热门内容
推荐内容
数字式单总线温度传感器DS18B20


FEATURES
 Unique 1-Wire® interface requires only one
port pin for communication
 Each device has a unique 64-bit serial code
stored in an onboard ROM
 Multidrop 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)
 0.5C 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
750ms (max.)
 User-definable nonvolatile (NV) alarm
settings
 Alarm search command identifies and
addresses devices whose temperature is
outside of programmed limits (temperature
alarm condition)
 Available in 8-pin SO (150mil), 8-pin SOP,
and 3-pin TO-92 packages
 Software compatible with the DS1822
 Applications include thermostatic controls,
industrial systems, consumer products,
thermometers, or any thermally sensitive
system

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 0.5C 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.

生产厂商:Dallas 半导体

datasheet:
DS18B20.pdf
下载: pdf 文件

 


 
点这里复制本页地址发送给您QQ/MSN上的好友
相关文章

红外接近传感器及可见光传感器(三合一)AL
3轴加速度传感器BMA020--10位ADC\8G
3轴加速度传感器MMA8451Q--14位ADC\8G
3轴加速度传感器MMA8452Q--12位ADC\8G
3轴加速度传感器MMA8453Q--10位ADC\8G
3轴加速度传感器MMA7660FC--8位ADC\1.5G
可见光传感器光敏电阻GL5537--540nm\100mw
可见光传感器光敏电阻PGM5537--540nm\100mw
可见光传感器光敏电阻LG5537--540nm\100mw
3轴地磁传感器(指南针)MMC314xMS
温湿度传感器DHT11
HC-SR04超声波测距模块
3轴加速度传感器BMA250--10位ADC\16G
烟雾传感器MQ-2

相关评论


本文章所属分类:首页 物料系统 传感器


反馈意见和建议