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Maxim Integrated
DS1631, DS1631A and DS1731
Maxim Integrated
Maxim Integrated
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ECON-Digital Thermometer and Thermostat

Maxim Integrated

The DS1720 Digital Thermometer and Thermostat provides 9–bit temperature readings which indicate the temperature of the device. With three thermal alarm out-puts, the DS1720 can also act as a thermostat. THIGH is driven high if the DS1720’s temperature is greater than or equal to a user–defined temperature TH. TLOW is driven high if the DS1720’s temperature is less than or equal to a user–defined temperature TL. TCOM is driven high when the temperature exceeds TH and stays high until the temperature falls below that of TL. User–defined temperature settings are stored in non–volatile memory, so parts can be programmed prior to insertion in a system, as well as used in stand–alone applications without a CPU. Temperature settings and temperature readings are all communicated to/from the DS1720 over a simple three wire interface.

  • Requires no external components
  • Supply voltage range covers from 2.7V to 5.5V
  • 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 value
  • Converts temperature to digital word in 1 second (maximum)
  • Thermostatic settings are user–definable and non–volatile
  • Data is read from/written via a three-wire serial interface (CLK, DQ, RST )
  • Thermostatic controls
  • Industrial systems
  • Consumer products
  • Thermometers, or any thermally sensitive system
  • Accuracy - Highest (Lowest):±2.5°C
  • Features:One-Shot, Output Switch, Standby Mode
  • Mounting Type:Surface Mount
  • Operating Temperature:-55°C ~ 125°C
  • Output Type:3-Wire (CLK, DQ, RST)
  • Package / Case:8-SOIC (0.209", 5.30mm Width)
  • Resolution:8 b
  • Sensing Temperature - Local:-55°C ~ 125°C
  • Sensor Type:Digital, Local
  • Supplier Device Package:8-SO
  • Test Condition:-55°C ~ 125°C
  • Voltage - Supply:2.7V ~ 5.5V