AN 769: Intel FPGA Remote Temperature Sensing Diode Implementation Guide

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ID 683139
Date 4/06/2022
Public
Document Table of Contents
Document Table of Contents x
1. Introduction 2. Implementation Overview 3. Implementation Consideration 4. Evaluation Results 5. Conclusion 6. Document Revision History for AN 769: Intel FPGA Remote Temperature Sensing Diode Implementation Guide
3. Implementation Consideration x
3.1. Ideality Factor (η-Factor) Mismatch 3.2. Series Resistance Error 3.3. Temperature Diode Beta Variation 3.4. Differential Input Capacitor 3.5. Offset Compensation
4. Evaluation Results x
4.1. Evaluation with Maxim Integrated* 's MAX31730 Temperature Sensing Chip Evaluation Board 4.2. Evaluation with Texas Instruments* 's TMP468 Temperature Sensing Chip Evaluation Board
1. Introduction
2. Implementation Overview
3. Implementation Consideration
4. Evaluation Results
5. Conclusion
6. Document Revision History for AN 769: Intel FPGA Remote Temperature Sensing Diode Implementation Guide

5. Conclusion

There are many different temperature sensing chip manufacturers. During component selection, Intel strongly recommends that you select the temperature sensing chip with the following considerations.
  1. Select a chip with configurable ideality factor feature.
  2. Select a chip that has series resistance cancellation.
  3. Select a chip that supports Beta compensation.
  4. Select capacitors that matches the chip manufacturer's recommendations.
  5. Apply any appropriate compensation after performing a temperature profile study.

Based on the implementation consideration and evaluation results, you must optimize the temperature sensing chip in your design to achieve measurement accuracy.

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