ENGLISH • 简体中文 • 日本語 • 한국어  

    Login | Register 


   
 
Enter keywords or part number    


What's New Products Solutions Design AppNotes Support Sales About Us Members

Maxim > Products > [Temperature Sensors] 
DS1620
Digital Thermometer and Thermostat


  QuickView     Technical Documents     Ordering Info     More Information     User Comments (0)     All  
Status
Part Number Status
DS1620 Active: In Production. But some versions of the family are No Longer Available. See Ordering Information.

Data Sheet
FULL DATA SHEET (PDF, 208kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

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.

Key Features   Applications/Uses
  • 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 (max)
  • Thermostatic Settings are User-Definable and Nonvolatile
  • Data is Read from/Written via a 3-Wire Serial Interface (CLK, DQ, active-low RST)
  • Applications Include Thermostatic Controls, Industrial Systems, Consumer Products, Thermometers, or any Thermally Sensitive System
  • 8-Pin DIP or SO (208-mil) Packages

 
  		• Consumer Products
  		• Industrial Systems
  		• Thermally Sensitive Systems
  		• Thermometers
  		• Thermostatic Controls

    Key Specifications:  Temperature Sensors
    Part Number Sensor Type Functions Interface Accuracy
    (±°C)    		 Parasite Pwr. Temp. Thresh. Temp. Resolution
    (bits)    		 Oper. Temp.
    (°C)    		 Smallest Available Pckg.
    (mm2)    		 Price
    max w/pins See Notes
    DS1620  Local
    Dual Output Temperature Switch
    Dual Temperature Alarms
    Standalone Thermostat
    Temperature Switch/Temperature Comparator
    3-Wire
    Logic
    		 0.5 No Programmable (NV)
    9
    10
    11
    12
    		 -55 to +125 44 $2.89 @1k
    See All Temperature Sensors (99)

    Key Specifications:  Temperature Switches
    Part Number Switch Type Functions Interface Accuracy
    (±°C)    		 Temp. Thresh.
    (°C)    		 Features Package/Pins Price
    See Notes
    DS1620  Local
    Dual Output Temperature Switch
    Dual Temperature Alarms
    Standalone Thermostat
    Temperature Switch/Temperature Comparator
    3-Wire
    Logic
    		 0.5
    Factory Programmed
    Programmable
    High Accuracy
    Nonvolatile Thermostatic Settings
    Push Pull Active High Output
    Separate High and Low Temperature Thresholds
    SOIC (W)/8
    		 $2.89 @1k
    See All Temperature Switches (25)

    Diagram
    DS1620: Functional Block Diagram
    Functional Block Diagram

    Application Notes
  		• Application Note 67: Applying and Using the DS1620 in Temperature Control Applications - DS1620
  		• Application Note 85: Interfacing the DS1620 to the Motorola SPI Bus - DS1620
  		• Application Note 134: Interfacing the DS1620 with a DS5000/8051 Microcontroller - DS1620
  		• Application Note 1771: Microcontrollers Improve Power Efficiency of 8051-Based Designs - DS1620
  		• Application Note 3489: Installing the DS9123O USB Adapter on Windows® 98 - DS1620
  		• Application Note 3930: Package Thermal Resistance Values (Theta JA, Theta JC) for Dallas Semiconductor Temperature Sensors - DS1620

    Design Guides
  		• Thermal Management (PDF)

    Reliability Reports
  		• Reliability Report: DS1620.pdf

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-8 of 8

    DS1620 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    DS1620    
    		Active PDIP(N);8 pin;82 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8-4*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    DS1620+  
    		Active PDIP(N);8 pin;82 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8+4*
    		-55°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1620S+T&R/C01    
    		Active SOIC (W);8 pin;44 mm²

    Land Pattern: Not Available
    Use pkgcode/variation: W8+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1620S-C01/T&R     N/A No Longer Available

    Land Pattern: Not Available

    		-55°C to +125°C See data sheet
    DS1620S    
    		Active SOIC (W);8 pin;44 mm²

    Land Pattern: Not Available
    Use pkgcode/variation: W8-3*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    DS1620S/T&R    
    		Active SOIC (W);8 pin;44 mm²

    Land Pattern: Not Available
    Use pkgcode/variation: W8-3*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    DS1620S+  
    		Active SOIC (W);8 pin;44 mm²

    Land Pattern: Not Available
    Use pkgcode/variation: W8+3*
    		-55°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1620S+T&R    
    		Active SOIC (W);8 pin;44 mm²

    Land Pattern: Not Available
    Use pkgcode/variation: W8+3*
    		-55°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
  		• Temperature Family by Product Type

    Related Products
    DS1626, DS1726 High-Precision 3-Wire Digital Thermometer and Thermostat

    Didn't Find What You Need?
  • Next Day Product Selection Assistance from Applications Engineers
  • Parametric Search
  • Applications Help

    •  QuickView   Technical Documents   Ordering Info   More Information  
     Description 
     Key Features 
     Applications/Uses 
     Key Specifications 
     Diagram 

    		 Data Sheet 
     Application Notes 
     Design Guides 
     Engineering Journals 
     Reliability Reports 
     Software/Models 
     Evaluation Kits 

    		 Price and Availability 
     Samples 
     Buy Online 
     Package Information 
     Lead-Free Information 

    		 Related Products 
     Notes and Comments 
     Evaluation Kits 

    2005-06-02
    This page last modified: 2009-10-23


            •         •         •     Privacy Policy     •     Legal Notices

        Copyright © 2009 by Maxim Integrated Products