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One-Wire Ambient Temperature Sensor - MAX31820
[47231]
CHF 2.49

Stock: 3

The MAX31820 ambient temperature sensor provides 9-bit to 12-bit Celsius temperature measurements with 0.5C accuracy over a +10C to +45C temperature range. Over its entire -55C to +125C operating range, the device has 2.0C accuracy.

The device communicates over a one-wire bus that, by definition, requires only one data line (and ground) for communication with a central microprocessor. In addition, the device can derive power directly from the data line, eliminating the need for an external power supply.

Each MAX31820 has a unique 64-bit serial code, which allows multiple MAX31820 devices to function on the same one-wire bus. Therefore, it is simple to use one microprocessor to control many devices distributed over a large area.

Features:

  • Unique one-wire interface requires only one port pin for communication
  • Each device has a unique 64-bit serial code stored in onboard ROM
  • Multidrop capability simplifies distributed temperature-sensing applications
  • Requires no external components
  • Can be powered from data line: 3.0V to 3.7V power-supply range
  • Measures temperatures from -55C to +125C (-67F to +257F)
  • 0.5C accuracy from +10C to +45C
  • Thermometer resolution is user-selectable from 9 bits to 12 bits
  • Converts temperature to 12-bit digital word in 750ms (Max)
  • User-definable nonvolatile (NV) alarm settings
  • Alarm search command identifies and addresses devices whose temperature is outside programmed limits (Temperature Alarm Condition)
  • Available in 3-pin TO-92 package
  • Software compatible with the DS1822 and DS18B20

Documents:

This product was added to our catalog on Wednesday 21 December, 2016.
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