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AN84783 - Accurate Measurement Using PSoC® 3 and PSoC 5LP Delta-Sigma ADCs | Cypress Semiconductor

AN84783 - Accurate Measurement Using PSoC® 3 and PSoC 5LP Delta-Sigma ADCs

Last Updated: 
May 10, 2017
Version: 
*D
AN84783 shows how to increase the accuracy of measurements using the 20-bit Delta-Sigma ADC in PSoC 3 and PSoC 5LP. Major topics include effective resolution, gain and offset errors, non-linearity, and accuracy improvement techniques. A spreadsheet is provided to assist ADC performance analysis and to optimize ADC Component configuration.

Introduction

Accurate measurement of physical quantities is important for many applications. In most measurement systems, you use a transducer to convert a physical quantity to a voltage. This voltage is sent through signal conditioning circuitry, if necessary, and then to an analog-to-digital converter (ADC).

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
V3.3 SP2
V3.3/
3.3 SP1
001
DVK
030/050
DVK
003/014
FTK
Keil
GCC
RVDS
MDK

AN84783.zip

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