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1-Wire寄生供电数字温度计

产品详情

主要特征

应用/用途

Parametric specs for Temperature Sensors
Sensor Type Local
# Channels One
Interface 1-Wire
Accuracy (±°C) 0.5
Parasite Pwr. Yes
Temp. Thresh. Programmable (NV)
Temp. Resolution (bits) 9
10
11
12
Oper. Temp. (°C) -55 to +100
Package/Pins TO92/3
Budgetary
Price (See Notes)
2.52
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简化框图

技术文档

数据资料 1-Wire寄生供电数字温度计 Nov 19, 2003
应用笔记 理解和运用Maxim iButton产品中的循环冗余校验(CRC)
应用笔记 用软件实现1-Wire®通信
设计指南 长线1-Wire网络可靠设计指南
应用笔记 用XML实现1-Wire®标签
应用笔记 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
应用笔记 1-Wire搜索算法
应用笔记 DS2480B串行接口1-Wire®线驱动器的使用
应用笔记 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
应用笔记 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
参考原理图 性能优异的1-Wire网络驱动器
应用笔记 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
应用笔记 与Microchip PICmicro微控制器之间的1-Wire®通信
应用笔记 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
应用笔记 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
应用笔记 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
应用笔记 采用MAXQ2000 USB “拇指”评估套件进行设计
应用笔记 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
参考原理图 1-Wire®双向电平转换器(1.8V至5V)参考设计
应用笔记 简单软件实现1-Wire®温度器件的硬件CRC校验和串行码流的误码检测
设计指南 热管理设计手册
设计指南 传感器信号通道
设计指南 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
应用笔记 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
参考原理图 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products

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参量

Parametric specs for Temperature Sensors
Sensor Type Local
# Channels One
Interface 1-Wire
Accuracy (±°C) 0.5
Parasite Pwr. Yes
Temp. Thresh. Programmable (NV)
Temp. Resolution (bits) 9
10
11
12
Oper. Temp. (°C) -55 to +100
Package/Pins TO92/3
Budgetary
Price (See Notes)
2.52

主要特征

  • Unique 1-Wire Interface Requires Only One Port Pin for Communication
  • Derives Power from Data Line ("Parasite Power")—Does Not Need a Local Power Supply
  • Multi-Drop Capability Simplifies Distributed Temperature Sensing Applications
  • Requires no External Components
  • ±0.5°C Accuracy from -10°C to +85°C
  • Measures Temperatures from -55°C to +100°C (-67°F to +212°F)
  • Thermometer Resolution is User-Selectable from 9 to 12 Bits
  • Converts Temperature to 12-Bit Digital Word in 750ms (max.)
  • User-Definable Non-Volatile Temperature Alarm Settings
  • Alarm Search Command Identifies and Addresses Devices Whose Temperature is Outside of Programmed Limits (Temperature Alarm Condition)
  • Software compatible with the DS1822-PAR
  • Ideal for Use in Remote Sensing Applications (e.g., Temperature Probes) That do not Have a Local Power Source

应用/用途

  • 远端检测应用

描述

The DS18B20-PAR 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-PAR does not need an external power supply because it derives power directly from the data line ("parasite power"). The DS18B20-PAR communicates over a 1-Wire® bus, which 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 +100°C and is accurate to ±0.5°C over a range of -10°C to +85°C.

Each DS18B20-PAR has a unique 64-bit identification code, which allows multiple DS18B20-PARs to function on the same 1-wire bus; thus, it is simple to use one microprocessor to control many DS18B20-PARs 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.

简化框图

 

技术文档

数据资料 1-Wire寄生供电数字温度计 Nov 19, 2003
应用笔记 理解和运用Maxim iButton产品中的循环冗余校验(CRC)
应用笔记 用软件实现1-Wire®通信
设计指南 长线1-Wire网络可靠设计指南
应用笔记 用XML实现1-Wire®标签
应用笔记 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
应用笔记 1-Wire搜索算法
应用笔记 DS2480B串行接口1-Wire®线驱动器的使用
应用笔记 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
应用笔记 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
参考原理图 性能优异的1-Wire网络驱动器
应用笔记 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
应用笔记 与Microchip PICmicro微控制器之间的1-Wire®通信
应用笔记 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
应用笔记 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
应用笔记 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
应用笔记 采用MAXQ2000 USB “拇指”评估套件进行设计
应用笔记 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
参考原理图 1-Wire®双向电平转换器(1.8V至5V)参考设计
应用笔记 简单软件实现1-Wire®温度器件的硬件CRC校验和串行码流的误码检测
设计指南 热管理设计手册
设计指南 传感器信号通道
设计指南 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
应用笔记 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products
参考原理图 Understanding and Using Cyclic Redundancy Checks with Maxim 1-Wire and iButton Products

支持和培训

在Maxim的知识库中搜索您所需的答案。

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心