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DS1822-PAR - Econo 1-Wire Parasite-Power Digital Thermometer

General Description

The DS1822-PAR digital thermometer provides 9- to 12-bit centigrade temperature measurements and has an alarm function with nonvolatile (NV) user-programmable upper and lower trigger points.

Key Features

  • 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.
  • Multidrop capability simplifies distributed temperature sensing.

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Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
DS1822 Econo 1-Wire Digital Thermometer
DS1821 Programmable Digital Thermostat/Thermometer
DS1803 Addressable Dual Digital Potentiometer
DS1804 Nonvolatile Trimmer Potentiometer
DS1805 Addressable Digital Potentiometer

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.maxim-ic.com FEATURES ƒ Unique 1-Wire® interface requires only one port pin for communication ƒ Derives power from data line (“parasite power”)—does not need a local power supply ƒ Multidrop capability simplifies distributed temperature sensing applications ƒ Requires no external components ƒ ±2.0°C accuracy from -10°C to +85°C ƒ Measures temperatures from -55°C to +100°C (-67°F to +212°F) ƒ Thermometer resolution is user-selectable from 9 to 12 bits ƒ Converts temperature to 12-bit digital word in 750ms (max.) ƒ User-definable temperature alarm settings ƒ Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition) ƒ Software compatible with the DS18B20-PAR ƒ Ideal for use in remote sensing applications (e.g.