Major topics include effective resolution, gain and offset errors, non-linearity, and accuracy improvement techniques. A spreadsheet is provided to assist with ADC performance analysis and optimizing ADC Component configuration.
Introduction
Accurate measurement of physical quantities is important for many applications. In most measurement systems, we 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 convertor (ADC).
PSoC® 3 and PSoC 5LP integrate the signal conditioning circuitry, ADC, microcontroller, and other peripherals (such as I2C, Segment LCD, PWM, etc) into a single chip. You can easily create high-precision analog systems using the integrated, highly configurable, 20-bit Delta-Sigma 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
|
||