TMP6-THERMISTOR-DESIGN

TMP6 thermistor design tool with look-up tables, performance comparisons & code examples

TMP6-THERMISTOR-DESIGN

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Overview

TMP6 linear thermistors, like other traditional negative temperature coefficient (NTC) or positive temperature coefficient (PTC) thermistors on the market, require resistance-to-temperature conversion tables to use them within a system. The TMP6 thermistor design tool offers these tables in addition to helpful tools for completing a system design. This tool has two options for using the thermistor in a resistor divider or constant current circuit to accommodate any design. Once the correct tool is chosen, it can be configured based on the TMP6 thermistor part number that will be used, the bias voltage/current, bias resistor if needed, and the ADC resolution.

After selecting the values that meet the system requirements, developers can then use additional tabs for comparisons between devices, as well as ANSI generic C code examples for the ideal conversion method. The comparison tab shows the different resistance curves of two devices and then calculates voltage curves, sensitivity/ºC power in milli-watts/ºC as well as resistance tolerance across temperature. The C code available can be used for converting resistance to temperature using a look-up table (LUT) in a microcontroller, running a 4th order polynomial regression and using Steinhart-Hart equations.

In addition to traditional code examples, the thermistor design tool also includes examples for more specific use-cases such as threshold detection and an averaging method for an increased measurement resolution and signal-to-noise ratio.
Features
  • Customizable based on part number, bias voltage/current, ADC resolution and bias resistor
  • Device resistance tables
  • Thermistor comparison based on resistance tables
  • Code examples for LUTs, polynomial regression and Steinhart-Hart equations
  • Code examples for threshold detection and software averaging

  • Voltage bias tool and current bias tool

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Support software

TMP6-THERMISTOR-DESIGN Thermistor Design Tool

Supported products & hardware

Supported products & hardware

Products
Thermistors
TMP61 1%, 10-kΩ linear thermistor in 0402, 0603/0805 and through hole packages TMP61-Q1 Automotive, 1%, 10-kΩ linear thermistor in 0402, 0603/0805 and through hole packages TMP63 1%, 100-kΩ linear thermistor in 0402, 0603/0805 packages TMP63-Q1 Automotive, 1%, 100-kΩ linear thermistor in 0402, 0603/0805 packages TMP64 1%, 47-kΩ linear thermistor in 0402, 0603/0805 packages TMP64-Q1 Automotive, 1%, 47-kΩ linear thermistor in 0402, 0603/0805 packages
Hardware development
Evaluation board
TMP6EVM Linear silicon TMP6 thermistor evaluation module

TMP6-THERMISTOR-DESIGN Thermistor Design Tool

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Latest version
Version: 01.00.00.0F
Release date: 19 Jun 2022
Products
Thermistors
TMP61 1%, 10-kΩ linear thermistor in 0402, 0603/0805 and through hole packages TMP61-Q1 Automotive, 1%, 10-kΩ linear thermistor in 0402, 0603/0805 and through hole packages TMP63 1%, 100-kΩ linear thermistor in 0402, 0603/0805 packages TMP63-Q1 Automotive, 1%, 100-kΩ linear thermistor in 0402, 0603/0805 packages TMP64 1%, 47-kΩ linear thermistor in 0402, 0603/0805 packages TMP64-Q1 Automotive, 1%, 47-kΩ linear thermistor in 0402, 0603/0805 packages
Hardware development
Evaluation board
TMP6EVM Linear silicon TMP6 thermistor evaluation module

Technical documentation

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Type Title Date
White paper Temperature Sensing with Thermistors (Rev. A) 31 May 2023
Application note TMP6X Oversampling 14 Oct 2020

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