DS1821
可编程数字温度监控器和温度计
概述
完整的数据资料
(PDF, 460kB)
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DS1821可作为独立的温度监视器(具有用户可编程门限)或8位温度传感器(1-Wire®数字接口)。温度监视门限储存在非易失存储器中,因此,DS1821可以在系统单机运行之前进行编程设置。DS1821的工作温度范围为:-55°C至+125°C,在0°C至+85°C范围内提供±1°C的精度。与DS1821的数据通信通过漏极开路DQ引脚实现,该引脚还可用作温度监视器输出。
关键特性
应用/使用
无需外部元件
独特的1-Wire接口只需一个端口用于数据通信
工作温度范围:-55°C至+125°C (-67°F至+257°F)
可作为独立的温度监视器,用户可编程门限
提供8位(1°C分辨率)温度测量
在0°C至+85°C范围内提供1°C的精度
1秒钟内(最大)将温度转换为数字
提供3引脚PR35封装和8引脚SO封装
典型应用包括温度监控、工业系统、消费类产品、温度计或其它温度检测系统
Key Specifications:
Temperature Sensors
Part Number
Sensor Type
Functions
Interface
Accuracy (±°C)
Parasite Power
Temperature Threshold
Temperature Resolution (Bits)
Operating Temp. Range (°C)
Smallest Available Package (max w/pins) (mm2 )
Price**
DS1821
Local
Temperature Switch/Temperature Comparator
1-Wire Non-Network
Logic
1
No
Programmable (NV)
8
-55 to +125
16
$2.20 @ 1k
See All Temperature Sensors (99)
Key Specifications:
Temperature Switches
Part Number
Switch Type
Functions
Interface
Accuracy (±°C)
Temperature Threshold (°C)
Features
RoHS Available
Package
Price**
DS1821
Local
Temperature Switch/Temperature Comparator
1-Wire Non-Network
Logic
1
Factory Programmed
Programmable
Open Drain Active Low Output
Yes
PR35/3
SOIC (W)/8
$2.20 @ 1k
See All Temperature Switches (25)
Notes:
** This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
2007-07-11
本页最后一次更新: 2008-03-11