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Digital Temperature Sensor DS18B20

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Product Details
  • SKU: SEN-TEM-001
  • In Stock: 18

Digital Temperature Sensor DS18B20

Regular Price
$5.60
Sale Price
$5.60
Regular Price
Sold Out
Unit Price
per 

DESCRIPTION

The DS18B20 digital 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. 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.


FEATURES

  • Unique 1-Wire® interface requires only one port pin for communication
  • Each device has a unique 64-bit serial code stored in an onboard ROM
  • Multidrop capability simplifies distributed temperature sensing applications
  • Requires no external components
  • Can be powered from data line. Power supply range is 3.0V to 5.5V
  • Measures temperatures from -55°C to 125°C (-67°F to 257°F)
  • ±0.5°C accuracy from -10°C to 85°C
  • Thermometer resolution is user-selectable from 9 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 of programmed limits (temperature alarm condition)
  • Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally sensitive system


TECHNICAL DETAILS

  • Input Voltage: 3.3 - 5.5V
  • Temperature Range: -55°C to 125°C
  • Accuracy: ±0.5°


SHIPPING LIST

  • 1x Digital Temperature Sensor DS18B20
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