DS1620

Digital Thermometer and Thermostat


Please check latest availability status for a specific part variant.

Description

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.
DS1620: Functional Block Diagram DS1620: Functional Block Diagram Enlarge+

Key Features

  • 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

Applications/Uses

  • Consumer Products
  • Industrial Systems
  • Thermometers
  • Thermostatic Controls
Part NumberSensor TypeFunctionsInterfaceChannelsAccuracy
(±°C)
Parasite Pwr.Temp. Thresh.Temp. Resolution
(bits)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
See Notes
DS1620 Local
Dual Temperature Alarms
Standalone Thermostat
3-Wire
Logic
One0.5NoProgrammable (NV)9-55 to +125
See Data Sheet
$3.23 @1k
See All Temperature Sensors (112)

Part NumberTemp. Thresh.
(°C)
Package/Pins
DS1620 Programmable
PDIP/8
SOIC/8
SOIC (W)/8
See All Temperature Switches (20)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Tools & Models

  • DS1620 IBIS Model
  • CAD Symbols and Footprints

  • DS1620
  • DS1620+
  • DS1620S
  • DS1620S+
  • DS1620S+T&R
  • DS1620S+T&R/C01
  • DS1620S/T&R
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
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    Package:
    Temperature:

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