AN84783 shows how to increase the accuracy of measurements using the 20-bit Delta-Sigma ADC in PSoC 3 and PSoC 5LP. You will learn effective resolution, gain and offset errors, nonlinearity, and accuracy improvement techniques. A spreadsheet is provided to help analyze ADC performance and 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 |
V2.2 |
V2.1/
2.0 |
001
DVK |
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
|
||