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: 供應(yīng)IC-溫度傳感器DS18B20; 電議

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品牌	DALLAS	型號(hào)	DS18B20
種類	溫度	材料	塑封
材料物理性質(zhì)	半導(dǎo)體	材料晶體結(jié)構(gòu)	單晶
制作工藝	集成	輸出信號(hào)	數(shù)字型

概述

完整的數(shù)據(jù)資料(PDF, 224kB)
英文

The DS18B20 dial thermometer provides 9-bit to 12-bit Celsius 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 &plun;0.5°C 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.

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