SPRACP5 December   2019 TMS320F2802-Q1 , TMS320F28020 , TMS320F280200 , TMS320F28021 , TMS320F28022 , TMS320F28022-Q1 , TMS320F280220 , TMS320F28023 , TMS320F28023-Q1 , TMS320F280230 , TMS320F28026 , TMS320F28026-Q1 , TMS320F28026F , TMS320F28027 , TMS320F28027-Q1 , TMS320F280270 , TMS320F28027F , TMS320F28027F-Q1 , TMS320F28030 , TMS320F28030-Q1 , TMS320F28031 , TMS320F28031-Q1 , TMS320F28032 , TMS320F28032-Q1 , TMS320F28033 , TMS320F28033-Q1 , TMS320F28034 , TMS320F28034-Q1 , TMS320F28035 , TMS320F28035-EP , TMS320F28035-Q1 , TMS320F28050 , TMS320F28051 , TMS320F28052 , TMS320F28052-Q1 , TMS320F28052F , TMS320F28052F-Q1 , TMS320F28052M , TMS320F28052M-Q1 , TMS320F28053 , TMS320F28054 , TMS320F28054-Q1 , TMS320F28054F , TMS320F28054F-Q1 , TMS320F28054M , TMS320F28054M-Q1 , TMS320F28055 , TMS320F2806-Q1 , TMS320F28062 , TMS320F28062-Q1 , TMS320F28062F , TMS320F28062F-Q1 , TMS320F28063 , TMS320F28064 , TMS320F28065 , TMS320F28066 , TMS320F28066-Q1 , TMS320F28067 , TMS320F28067-Q1 , TMS320F28068F , TMS320F28068M , TMS320F28069 , TMS320F28069-Q1 , TMS320F28069F , TMS320F28069F-Q1 , TMS320F28069M , TMS320F28069M-Q1

 

  1.   C2000 ADC (Type-3) Performance Versus ACQPS
    1.     Trademarks
    2. 1 Introduction
    3. 2 Offset Error
    4. 3 Gain Error
    5. 4 Linearity Error
      1. 4.1 Differential Non-Linearity Error
      2. 4.2 Integral Non-Linearity Error
    6. 5 Summary
    7. 6 References
  2.   A DC Code Spread
    1.     A.1 Overview
    2.     A.2 Method
  3.   B Calculating DNL Error
    1.     B.1 Histogram Method

C2000™ ADC (Type-3) Performance Versus ACQPS

Analog-to-Digital Converters (ADCs) are an important part of the C2000 Microcontroller (MCU) devices. In embedded processing, the conversion of a real time signal into a digital reading is essential for many real-time applications. Often, choosing the correct setup and configuration for an ADC can be difficult depending on system requirements. This application report discusses configuration settings, specifically the acquisition sample and hold time (ACQPS), with a focus on the F2803x device family. Some insight is given into which ACQPS values should be avoided based on the internal structure of a type 3 ADC in order to maximize the ADC’s performance by minimizing offset/gain error and achieving better integral and differential linearity. To achieve these results, this document follows a methodical approach first going through error internal to the ADC itself then the error based on ADC performance specifications. The information provided in this application report is applicable to all C2000 devices with a type 3 ADC.