1. Products
  2. A/D Converters (ADC)
  3. Integrated/Special Purpose A/D Converters
  4. Digital Temperature Sensors
  5. LTC2983


Alternative Parts

Overview

Features and Benefits

  • Directly Digitize RTDs, Thermocouples, Thermistors, and Diodes
  • Single 2.85V to 5.25V Supply
  • Results Reported in °C or °F
  • 20 Flexible Inputs Allow Interchanging Sensors
  • Automatic Thermocouple Cold Junction Compensation
  • Built-In Standard and User-Programmable Coefficients for Thermocouples, RTDs and Thermistors
  • Configurable 2-, 3- or 4-Wire RTD Configurations
  • Measures Negative Thermocouple Voltages
  • Automatic Burn Out, Short-Circuit and Fault Detection
  • Buffered Inputs Allow External Protection
  • Simultaneous 50Hz/60Hz Rejection
  • Includes 10ppm/°C (max) Reference (I-Grade)

Product Details

The LTC2983 measures a wide variety of temperature sensors and digitally outputs the result, in °C or °F, with 0.1°C accuracy and 0.001°C resolution. The LTC2983 can measure the temperature of virtually all standard (type B, E, J, K, N, S, R, T) or custom thermocouples, automatically compensate for cold junction temperatures and linearize the results. The device can also measure temperature with standard 2-, 3- or 4-wire RTDs, thermistors and diodes. It has 20 reconfigurable analog inputs enabling many sensor connections and configuration options. The LTC2983 includes excitation current sources and fault detection circuitry appropriate for each type of temperature sensor.

The LTC2983 allows direct interfacing to ground referenced sensors without the need for level shifters, negative supply voltages, or external amplifiers. All signals are buffered and simultaneously digitized with three high accuracy, 24-bit ΔΣ ADCs, driven by an internal 10ppm/°C (maximum) reference.

Applications

  • Direct Thermocouple Measurements
  • Direct RTD Measurements
  • Direct Thermistor Measurements
  • Custom Sensor Applications

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (2)

Documentation & Resources

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  • 3rd Party Solutions (2)
  • Data Sheets (1)
  • Reliability Data (1)
  • User Guides (2)
  • Design Notes (1)
  • Product Selector Card (1)
  • Solutions Bulletins & Brochures (1)
  • Videos (5)
  • Technical Articles (7)
  • Technical Articles

    Software & Systems Requirements

    Evaluation Software

    LTC2983 Demo Software

    The LTC2983 demo software is designed to help configure, program and run the LTC2983. It can configure the LTC2983, save the configuration, check for configuration errors, run the conversion results into a text file, and create Linduino-ready C code based on the configuration. The software can be used by itself, or used in conjunction with the DC2209 demo circuit.

    Tools & Simulations

    Linduino

    Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

    Linduino code repository on GitHub and instructions on how to use the code.

    Purchase Linduino

    Linduino

    Design Resources

    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.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    LTC2983CLX#PBF Material Declaration Reliability Data 48-Lead LQFP (7mm x 7mm)
    LTC2983HLX#PBF Material Declaration Reliability Data 48-Lead LQFP (7mm x 7mm)
    LTC2983ILX#PBF Material Declaration Reliability Data 48-Lead LQFP (7mm x 7mm)
    Wafer Fabrication Data R578 Reliability Data

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    Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

    Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.