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AN70698 - PSoC® 3, PSoC 4, and PSoC 5LP - Temperature Measurement with an RTD | Cypress Semiconductor

AN70698 - PSoC® 3, PSoC 4, and PSoC 5LP - Temperature Measurement with an RTD

Last Updated: 
Jul 27, 2016
Version: 
*I
AN70698 explains the theory of temperature measurement using an RTD, and then shows how to do so with a single PSoC® 3, PSoC 4 or PSoC 5LP without the need for external ADCs or amplifiers. It also explains how to calculate the resolution and accuracy of a given system.
Introduction

Temperature is one of the most frequently measured environmental variables. RTD temperature measurement is typically done using one of four sensors: resistance temperature detector (RTD), thermocouple, thermistor, or diode.

The following table indicates the PSoC devices, PSoC Creator versions, compilers, and development kits that will work with this application note project:

Project
Device
PSoC Creator
Version
Development Kit
CY8CKIT-xxx
Compiler
Architecture
Silicon
Revision
V2.2 SP1
or higher
V2.1 SP1/
V2.1
001
DVK
030/050
DVK
003/014
FTK
Keil
GCC
RVDS
MDK

AN70698.zip

Prod
YES
NO
YES
YES*
NO
YES
N/A
N/A
N/A
Prod
YES
NO
YES
YES*
NO
N/A
YES
YES
YES

* Refer to Migrating CY8CKIT-001 DVK project to CY8CKIT 030/ 050.

Notes:

  1. Click on AN77835 - PSoC® 3 to PSoC 5LP Migration Guide to learn differences between PSoC 3 and PSoC 5LP.
  2. For PSoC 5 project and related document, please download file AN70698_Archive.zip.

Projects associated with this application note can be downloaded from the 'Related Files' section below. For your convenience, we have provided projects that are compatible with the two most recent versions of PSoC Creator:

  • AN70698.zip is used with PSoC Creator 2.2 SP1
  • AN70698_Archive.zip is used with PSoC Creator 2.1 SP1/2.1

The project’s default settings may not be compatible with your device or kit, and you may need to change your project settings. For more information, see: