DS18B20-PAR:1-Wire寄生供电数字温度计

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.

关键特性
  • 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
  • 远端检测应用
数据手册DataSheet
语言下载文件备注
英文DS18B20-PAR.pdfRev 1; 11/2003
关键参数
Part NumberSensor TypeInterfaceChannelsAccuracy
(±°C)
Parasite Pwr.Temp. Thresh.Temp. Resolution
(bits)
Multi DroppableOper. Temp.
(°C)
Package/PinsBudgetary
Price
See Notes
DS18B20-PARLocal1-WireOne0.5YesProgrammable (NV)
  • 9
  • 10
  • 11
  • 12
Yes-55 to +100TO92/3$2.40 @1k
技术资料
相关产品
  • DS1822-PAR:经济型、寄生供电数字温度计
  • DS18B20:分辨率可编程设置的1-Wire数字温度计
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
DS18B20-PAR停止供货DS18B20+T&RTO92,;3引脚;19.5mm²-40°C至+85°CRoHS/无铅:否
DS18B20-PAR+T&R生产中TO92,;3引脚;27.6mm²-40°C至+85°CRoHS/无铅:无铅
DS18B20-PAR/T&R停止供货DS18B20+PARTO92,;3引脚;27.6mm²-40°C至+85°CRoHS/无铅:否
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