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MAX6675
Cold-Junction-Compensated K-Thermocouple-to-Digital Converter (0°C to +1024°C)


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Data Sheet
FULL DATA SHEET (PDF, 144kB)
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Description
The MAX6675 performs cold-junction compensation and digitizes the signal from a type-K thermocouple. The data is output in a 12-bit resolution, SPI™-compatible, read-only format.

This converter resolves temperatures to 0.25°C, allows readings as high as +1024°C, and exhibits thermocouple accuracy of 8 LSBs for temperatures ranging from 0°C to +700°C.

The MAX6675 is available in a small, 8-pin SO package.

Key Features   Applications/Uses
  • Cold-Junction Compensation
  • Simple SPI-Compatible Serial Interface
  • 12-Bit, 0.25°C Resolution
  • Open Thermocouple Detection

 
  • Appliances
  • Automotive Electronics
  • HVAC
  • Industrial

    Key Specifications:   Temperature Sensors
    Part Number Sensor Type Functions Interface Remote Channels Accuracy (±°C) Parasite Power Temperature Resolution (Bits) Price**
    MAX6675  Remote
    Thermocouple-to-Digital Converter
    3-Wire/SPI Single 3 No 12 $3.88 @ 1k
    See All Temperature Sensors (97)
    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 prices and delivery, please see the price and availability page or contact an authorized distributor.

    Application Notes
  • Application Note 687: Distributed Temperature Sensing Improves Reliability - MAX6675
  • Application Note 3229: Selecting Temperature Sensors for System Measurement and Protection - MAX6675
  • Application Note 4026: Implementing Cold-Junction Compensation in Thermocouple Applications - MAX6675

    Evaluation Kits
  • MAX6675EVKIT

    Design Guides
  • TEMP SENSORS (PDF)

    Reliability Reports
  • Show FIT data for:
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    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: 1-4 of 4

    MAX6675 Free
    Sample
    Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX6675ISA  
    SOIC;8 pin;
    Dwg: 21-0041 (PDF)
    Use pkgcode/variation: S8-2*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6675ISA-T  
    SOIC;8 pin;
    Dwg: 21-0041 (PDF)
    Use pkgcode/variation: S8-2*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6675ISA+  
    SOIC;8 pin;
    Dwg: 21-0041 (PDF)
    Use pkgcode/variation: S8+2*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6675ISA+T  
    SOIC;8 pin;
    Dwg: 21-0041 (PDF)
    Use pkgcode/variation: S8+2*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
  • Temperature Family by Product Type

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    Document Ref.: 19-2235; Rev 1; 2002-05-21
    This page last modified: 2008-03-13



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