Sensors:Temperature sensor

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Temperature sensor

temperature-sensor Temperature sensor

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  • Unique 1–WireTM interface requires only one port pin for communication
  • Multidrop capability simplifies distributed temperature sensing applications
  • Requires no external components
  • Can be powered from data line
  • Zero standby power required
  • Measures temperatures from –55°C to +125°C in 0.5°C increments. Fahrenheit equivalent is –67°F to +257°F in 0.9°F increments
  • Temperature is read as a 9–bit digital value.
  • Converts temperature to digital word in 200 ms (typ.)
  • User–definable, nonvolatile temperature alarm settings
  • Alarm search command identifies and addresses devices whose temperature is outside of
  • Thermostatic controls
  • Industrial systems
  • Consumer products
  • Thermometers, or any thermally sensitive system
  • The DS1820 Digital Thermometer provides 9–bit temperature readings which indicate the temperature of the device.

  • Information is sent to/from the DS1820 over a 1–Wire interface, so that only one wire (and ground) needs to be connected from a central microprocessor to a DS1820. Power for reading, writing, and performing temperature conversions can be derived from the data line itself with no need for an external power source.

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