MAX31856
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MAX31856

Precision Thermocouple to Digital Converter with Linearization

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Simplifies Thermocouple Designs with Integrated Automatic Cold Junction Compensation and Linearization Correction

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IBIS Model MAX31856 IBIS Model Download 206.71KB
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1ku List Price Starting From $4.98
Features
  • Provides High-Accuracy Thermocouple Temperature Readings
    • Includes Automatic Linearization Correction for 8 Thermocouple Types
    • ±0.15% (max, -20°C to +85°C) Thermocouple Full-Scale and Linearity Error
    • 19-Bit, 0.0078125°C Thermocouple Temperature Resolution
  • Internal Cold-Junction Compensation Minimizes System Components
    • ±0.7°C (max, -20°C to +85°C) Cold-Junction Accuracy
  • ±45V Input Protection Provides Robust System Performance
  • Simplifies System Fault Management and Troubleshooting
    • Detects Open Thermocouples
    • Over- and Undertemperature Fault Detection
  • 50Hz/60Hz Noise Rejection Filtering Improves System Performance
  • 14-Pin TSSOP Package
Additional Details
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The MAX31856 performs cold-junction compensation and digitizes the signal from any type of thermocouple. The output data is formatted in degrees Celsius. This converter resolves temperatures to 0.0078125°C, allows readings as high as +1800°C and as low as -210°C (depending on thermocouple type), and exhibits thermocouple voltage measurement accuracy of ±0.15%. The thermocouple inputs are protected against overvoltage conditions up to ±45V.

A lookup table (LUT) stores linearity correction data for several types of thermocouples (K, J, N, R, S, T, E, and B). Line frequency filtering of 50Hz and 60Hz is included, as is thermocouple fault detection. A SPI-compatible interface allows selection of thermocouple type and setup of the conversion and fault detection processes.

Applications

  • Industrial Equipment
  • Industrial Ovens, Furnaces, and Environmental Chambers
  • Temperature Controllers
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IBIS Model MAX31856 IBIS Model Download 206.71KB
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1ku List Price Starting From $4.98
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MAX31856

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UPDATED 04/06/2015
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MAX31856: Precision Thermocouple to Digital Converter with Linearization Data Sheet (Rev.0)

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UPDATED 01/14/2016
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MAX31856: 高精度热电偶至数字输出转换器，带线性度补偿 Data Sheet (Rev.0)

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MAX31856: 高精度熱電対-デジタルコンバータ、線形化内蔵 Data Sheet (Rev.0)

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UPDATED 03/26/2018
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2022-10-04

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How to Measure Temperature with a Thermocouple Using the MAX31856

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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. View our quality and reliability program and certifications for more information.

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Dec 11, 2018

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Cold-Junction Compensated Thermocouple-to-Digital Converter

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Evaluation Kit

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MAX31856EVSYS

Evaluation System for MAX31856

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MAX31856EVSYS

Evaluation System for MAX31856

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MAX31856EVSYS
Evaluation System for MAX31856

Features and Benefits

  • Easy Evaluation of the MAX31856
  • Includes K-Type Thermocouple
  • USB Power and Interface with USB2PMB1 Board
  • Windows XP®, Windows® 7, Windows 8.1-Compatible Software
  • 12-Pin Pmod-Compatible Connector (SPI)
  • Fully Assembled and Tested
  • Proven PCB Layout
  • RoHS Compliant
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Product Detail

The MAX31856 evaluation system (EV system) provides the hardware and software necessary to evaluate the MAX31856 thermocouple-to-digital converter.

The EV system includes the MAX31856PMB1 peripheral module with a Pmod™-compatible connector for SPI communication. The system also includes the USB2PMB1 adapter board for communication with the software and a K-type thermocouple for temperature sensing. Other thermocouple types (J, N, R, S, T, E, and B) can be evaluated with a user-supplied thermocouple.

Applications

  • Industrial Equipment
  • Industrial Ovens, Furnaces, and Environmental Chambers
  • Temperature Controllers

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MAX31856PMB1 Gerber File - Design Files Download

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MAX31856EVSYS

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