LTC2983 - Multi-Sensor High Accuracy Digital Temperature Measurement System

The LTC®2983 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 ADC's, driven by an internal 10ppm/°C (maximum) reference.

Features
  • 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)
  • Demo software with configuration checker and C-code generation tool
Typical Application
LTC2983 Typical Application
LTC2983 Typical Application
Applications
  • Direct Thermocouple Measurements
  • Direct RTD Measurements
  • Direct Thermistor Measurements
  • Custom Sensor Applications
Packaging
LTC2983 Package Drawing
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC2983CLX#PBF7x7 LQFP-48C$27.84$19.49
LTC2983HLX#PBF7x7 LQFP-48H$36.82$25.78
LTC2983ILX#PBF7x7 LQFP-48I$32.02$22.41
Demo Boards
Part NumberDescriptionPrice
DC2296ALTC2983 Demo Board | LTC2983 Motherboard (DC2209) + 20-Input Breakout Board (DC2210), req. DC2026$125.00
DC2296A-KITStarter Kit for LTC2983 | LTC2983 Motherboard (DC2209) + 20-Input Breakout Board (DC2210) + Linduino One (DC2026)$195.00
Companion Boards
Part NumberDescriptionPrice
DC2026CLinduino One Isolated USB Demo Board: An Arduino- and QuikEval-Compatible Code Development Platform$75.00
DC2211ALTC2983/84/86 Universal 4-Input Board (req. DC2296, DC2420 or DC2531)$50.00
DC2212ALTC2983/84/86 Thermocouple Board (req. DC2296, DC2420 or DC2531)$75.00
DC2213ALTC2983/84/86 RTD Board (req. DC2296, DC2420 or DC2531)$115.00
DC2214ALTC2983/84/86 Thermistor Board (req. DC2296, DC2420 or DC2531)$75.00
Datasheet
Design Note
Reliability Data
Product Selector Card
LT Journal
Press Release
CAD Symbol
Ad
Linduino
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LTC2983 Footprints and Symbols
Any Temp Sensor In. Benchtop Accuracy Out.
DC2212A Linduino.INO File
DC2213A Linduino.INO File
DC2214A Linduino.INO File
LTC2983 Linduino Header File
LTC2983 Linduino Header File
LTC2983 Linduino Header File
LTC2983 Linduino.CPP