DS18B20-PAR - Maxim Integrated Products

DS18B20-PAR 1-Wire Parasite-Power Digital Thermometer

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 bu.

Features

a t interface requires only one
• Unique a 1-wire port pin for communication D .
• Derives power from data line (“parasite w power”)—does not need a local power supply w
• Multi-drop capability simplifies distributed w temperature sensing applications
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• DS18B20-PAR 1-Wire Parasite-Power Digital Thermometer ® PIN ASSIGNMENT DALLAS 18B20P 1 2 3
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• 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.