Features and Benefits
- Simply Adds Temperature Monitoring and Control to Any System
- 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 750ms (max)
- Thermostatic Settings are User-Definable and Nonvolatile
- Can Be Used in a Wide Variety of Applications
- Supply Voltage Range Covers From 2.7V to 5.5V
- Data is Read From/Written Via a 3-Wire Serial Interface (CLK, DQ, Active-Low RST )
- Saves Space
- Requires No External Components
- 8-Pin DIP or SOIC (208-mil) Packages
The DS1620 Digital Thermometer and Thermostat provides 9-bit temperature readings which indicate the temperature of the device. With three thermal alarm outputs, the DS1620 can also act as a thermostat. THIGH is driven high if the DS1620's temperature is greater than or equal to a user-defined temperature TH. TLOW is driven high if the DS1620'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 nonvolatile memory, so parts can be programmed prior to insertion in a system, as well as used in standalone applications without a CPU. Temperature settings and temperature readings are all communicated to/from the DS1620 over a simple 3-wire interface.
- Consumer Products
- Industrial Systems
- Thermostatic Controls
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
DS1620 Reliability Data1/12/2023
Thermal Management Handbook5/4/2010
Package Thermal Resistance Values (Theta JA, Theta JC) for Temperature Sensors and 1-Wire Devices11/16/2006
Microcontrollers Improve Power Efficiency of 8051-Based Designs10/21/2002
Interfacing the DS1620 with a DS5000/8051 Microcontroller9/30/2002
Interfacing the DS1620 to the Motorola SPI Bus6/1/2001
Tools & Simulations
DS1620 Companion Parts
Recommended Related Parts
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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Buy Now Pricing
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