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Digital Thermometer and Thermostat

Product Details

Key Features

Applications/Uses

Parametric specs for Temperature Sensors
Sensor Type Local
# Channels One
Interface 3-Wire
Logic
Functions Dual Temperature Alarms
Standalone Thermostat
Accuracy (±°C) 0.5
Parasite Pwr. No
Temp. Thresh. Programmable (NV)
Temp. Resolution (bits) 9
Oper. Temp. (°C) -55 to +125
Package/Pins PDIP/8
SOIC (W)/8
Budgetary
Price (See Notes)
3.59
Parametric specs for Temperature Switches
Temp. Thresh. (°C) Programmable
Package/Pins PDIP/8
SOIC (W)/8
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Simplified Block Diagram

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Parameters

Parametric specs for Temperature Sensors
Sensor Type Local
# Channels One
Interface 3-Wire
Logic
Functions Dual Temperature Alarms
Standalone Thermostat
Accuracy (±°C) 0.5
Parasite Pwr. No
Temp. Thresh. Programmable (NV)
Temp. Resolution (bits) 9
Oper. Temp. (°C) -55 to +125
Package/Pins PDIP/8
SOIC (W)/8
Budgetary
Price (See Notes)
3.59
Parametric specs for Temperature Switches
Temp. Thresh. (°C) Programmable
Package/Pins PDIP/8
SOIC (W)/8

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

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.

Simplified Block Diagram

DS1620: Functional Block Diagram DS1620: Functional Block Diagram Zoom icon

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .