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

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, nonlinearity, 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: