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ADC-TEMP-SENSOR-FW

Temperature-sensor (RTD, thermocouple, thermistor) firmware for precision ADCs

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ADC-TEMP-SENSOR-FW

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Overview

This temperature-sensor linearization firmware provides a software routine for measuring and linearizing most common temperature sensors, including resistance temperature detectors (RTDs), thermocouples, thermistors (NTC, PTC, etc.) and analog temperature sensors.

This software includes an analog-to-digital converter (ADC) hardware abstraction layer to enable communication between an ADC and a microprocessor (MCU), a sensor API to convert and linearize sensor data into a temperature value, and examples that demonstrate how to use the source code to read temperature using a sensor, a precision ADC and an MCU.

Features
  • Complete firmware for temperature-to-digital conversion
  • Supports common temperature-sensor types:
    • RTDs (PT100, PT1000, Ni120, etc.)
    • Thermocouples (type K, J, B, T, etc.)
    • Thermistors (PTC, NTC)
    • Analog temperature sensors
  • Easy to modify for multiple sensors
  • Supports multiple precision ADCs (see supported products & hardware for the ADC-TEMP-SENSOR-FW download)

  • ADC hardware abstraction layer (HAL)
  • Sensor API
  • Temperature-sensor examples
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Get started

  1. Download and install the firmware
  2. Install Code Composer Studio
  3. Install processor libraries
  4. Import the project from C:\ti\ADCTempSensorFW_1.0.0\Software\Examples
  5. Connect EVM & sensor
  6. Setup terminal emulator
  7. Execute project

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Application software & framework

ADC-TEMP-SENSOR-FW — Temperature-sensor firmware source files

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Supported products & hardware

Supported products & hardware

Products
Precision ADCs
ADS124S08 — 24-bit, 4-kSPS, 12-ch delta-sigma ADC with PGA and voltage reference for sensor measurement ADS1220 — 24-bit, 2-kSPS, four-channel, low-power, delta-sigma ADC with PGA, VREF, SPI and two IDACs ADS1261 — 24-bit, 40-kSPS, 10-ch delta-sigma ADC with PGA, VREF, IDACs & AC excitation for factory automation ADS122C04 — 24-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC with PGA, VREF, 2x IDACs & I2C interface ADS122U04 — 24-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC w/ PGA, VREF, 2x IDACs & UART interface ADS112C04 — 16-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC with PGA, VREF, 2x IDACs & I2C interface ADS112U04 — 16-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC w/ PGA, VREF, 2x IDACs & UART interface ADS1120 — 16-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC with PGA, VREF, 2x IDACs & SPI interface
Download options

ADC-TEMP-SENSOR-FW — Temperature-sensor firmware source files

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Latest version
Version: 1.3.0
Release date: 21 Dec 2023
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ADCTempSensorFW_1.3.0.zip  — 10558 K

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Products
Precision ADCs
ADS124S08 — 24-bit, 4-kSPS, 12-ch delta-sigma ADC with PGA and voltage reference for sensor measurement ADS1220 — 24-bit, 2-kSPS, four-channel, low-power, delta-sigma ADC with PGA, VREF, SPI and two IDACs ADS1261 — 24-bit, 40-kSPS, 10-ch delta-sigma ADC with PGA, VREF, IDACs & AC excitation for factory automation ADS122C04 — 24-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC with PGA, VREF, 2x IDACs & I2C interface ADS122U04 — 24-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC w/ PGA, VREF, 2x IDACs & UART interface ADS112C04 — 16-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC with PGA, VREF, 2x IDACs & I2C interface ADS112U04 — 16-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC w/ PGA, VREF, 2x IDACs & UART interface ADS1120 — 16-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC with PGA, VREF, 2x IDACs & SPI interface

Release Information

Temperature sensor firmware

What's new

  • Added support for ADS122C04 and ADS122U04
  • New software license that doesn't require clickwrap

Supported products & hardware

Precision ADCs
ADS1120 — 16-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC with PGA, VREF, 2x IDACs & SPI interface ADS114S06 — 16-bit, 4-kSPS, 6-ch delta-sigma ADC with PGA and voltage reference for sensor measurement ADS114S06B — 16-bit, 4-kSPS, 6-ch delta-sigma ADC With PGA and voltage reference for low-cost applications ADS114S08 — 16-bit, 4-kSPS, 12-ch delta-sigma ADC with PGA and voltage reference for sensor measurement ADS114S08B — 16-bit, 4-kSPS, 12-ch delta-sigma ADC with PGA and voltage reference for low-cost applications ADS1220 — 24-bit, 2-kSPS, four-channel, low-power, delta-sigma ADC with PGA, VREF, SPI and two IDACs ADS124S06 — 24-bit, 4-kSPS, 6-ch delta-sigma ADC with PGA and voltage reference for precision sensor measurement ADS124S08 — 24-bit, 4-kSPS, 12-ch delta-sigma ADC with PGA and voltage reference for sensor measurement ADS1260 — 24-bit, 40-kSPS, 5-ch delta-sigma ADC with PGA, VREF and IDACs for factory automation ADS1261 — 24-bit, 40-kSPS, 10-ch delta-sigma ADC with PGA, VREF, IDACs & AC excitation for factory automation
Evaluation board
ADS1120EVM — ADS1120 Evaluation Module ADS114S08EVM — ADS114S08 evaluation module ADS1220EVM — ADS1220 evaluation module ADS124S08EVM — ADS124S08 evaluation module ADS1261EVM — ADS1261 evaluation module

Technical documentation

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Type Title Date
Application note A Basic Guide to Thermocouple Measurements (Rev. A) PDF | HTML 29 Mar 2023
Application note A Basic Guide to RTD Measurements (Rev. A) PDF | HTML 29 Mar 2023
Application note RTD Wire-Break Detection Using Precision Delta-Sigma ADCs PDF | HTML 18 Feb 2021

Related design resources

Design tools & simulation

CALCULATION TOOL
ADC-RTD-CONFIG-CALC — Resistance temperature detector (RTD) configuration calculator for precision ADCs

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