DS1620 Digital Thermometer

  • 604-00002: DS1620 Digital Themometer for Temperature
  • 604-00002: DS1620 Digital Themometer for Temperature Alternate View
Product ID: 604-00002



The DS1620 is a complete digital thermometer on a chip, capable of replacing the normal combination of temperature sensor and analog-to-digital converter in most applications.

The DS1620 can also operate as a standalone thermostat. A temporary connection to a controller establishes the mode of operation and high/low-temperature set points. After which the chip independently controls three outputs: T (high), which goes active at temperatures above the high-temperature set point; T (low), active at temperatures below the set point; and T (com), which goes active at temperatures above the high set point, and stays active until the temperature drops below the low set point.

Key Features:

  • Measures in units of 0.5° Centigrade (C) from -55° C to +125° C. (In Fahrenheit (°F), units of 0.9° F and a range of -67° F to +257° F.

Application Ideas:

  • Room temperature monitor
  • Custom digital thermostat

Note: This component is included in the StampWorks Experiment Kit (#27297)


  • Measures temperature within +/- 0.5°C error
  • Converts temperature to digital word in 750 ms
  • Interfaces with any Parallax microcontroller
  • Voltage requirements: 2.7-5.5 VDC
  • Current requirements: 1 mA (max), 1.5 uA (standby)
  • Communication: 3-wire synchronous serial (SPI)
  • Package: DIP-8 (.300")
  • Operating temp range: -67 to +257 °F (-55 to +125 °C)


Downloads & Documentation

Product Specific Downloads
Download Details More Info
DS1620 Datasheet - 196.45 KB | updated: 04 Oct 2012 - 2:05 pm

Additional Resources