SBAU408 august   2023 ADS7953

 

  1.   1
  2.   ADS7953EVM-PDK Evaluation Module
  3.   Trademarks
  4. 1Overview
    1. 1.1 ADS7953EVM-PDK Features
    2. 1.2 ADS7953EVM Features
  5. 2Analog Interface
    1. 2.1 Connectors for Analog Inputs
    2. 2.2 ADC Input Signal Driver
      1. 2.2.1 Input Signal Path
  6. 3Digital Interfaces
    1. 3.1 SPI for the ADC Digital I/O
  7. 4Power Supplies
    1. 4.1 ADC Voltage Reference Configuration
  8. 5ADS7953EVM-PDK Initial Setup
    1. 5.1 Default Jumper Settings
    2. 5.2 EVM Graphical User Interface Software Installation
  9. 6ADS7953EVM-PDK Operation
    1. 6.1 EVM GUI Global Settings for ADC Control
    2. 6.2 Time Domain Display Tool
    3. 6.3 Spectral Analysis Tool
    4. 6.4 Histogram Analysis Tool
    5. 6.5 Device Configuration
    6. 6.6 Alarm Configuration
  10. 7Schematic, Bill of Materials, and Printed-Circuit Board Layout
    1. 7.1 Schematic
    2. 7.2 Bill of Materials
    3. 7.3 PCB Layout

6.4 Histogram Analysis Tool

The Histogram Analysis tool can be used to estimate the effective resolution of the ADC resulting from performance degradation caused by noise. Effective resolution is an indicator of the number of bits of ADC measurement resolution resulting from performance losses caused by noise generated by the various sources connected to the ADC when measuring a DC signal. The cumulative effect of noise coupling to the ADC output (from sources such as the input drive circuits, the reference drive circuit, the ADC power supply, and the ADC) is reflected in the standard deviation of the ADC output code histogram obtained by performing multiple conversions of a DC input applied to a given channel.

The histogram corresponding to a DC input is displayed by clicking the Capture button. The example capture shown in Figure 6-5 is captured with the ADC configured in single-ended and 1 × VREF mode and with the AINP pin driven with +1 V.

GUID-20230803-SS0I-WVG3-QH6T-HL8ZSKXLNWTK-low.svgFigure 6-5 Histogram Analysis Tool