DS18S20-PAR 寄生供电数字温度计

DS18S20-PAR 寄生供电数字温度计

DS18S20-PAR 概述

The DS18S20-PAR digital thermometer provides 9-bit centigrade temperature measurements and has an alarm function with nonvolatile user-programmable upper and lower trigger points. The DS18S20-PAR does not need an external power supply because it derives power directly from the data line ("parasite power"). The DS18S20-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 DS18S20-PAR has a unique 64-bit identification code, which allows multiple DS18S20-PARs to function on the same 1-wire bus; thus, it is simple to use one microprocessor to control many DS18S20-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.

DS18S20 pdf datasheet

DS18S20-PAR 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)

9-Bit Thermometer Resolution

Converts Temperature 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/使用

 远端检测应用

管脚引脚图