SBAU213A September   2013  – July 2020 ADS8860

 

  1.   Trademarks
  2. 1EVM Overview
    1. 1.1 ADS8860EVM Kit
    2. 1.2 ADS8860EVM Board
  3. 2EVM Analog Interface
    1. 2.1 ADC Drive Amplifier and Filter
    2. 2.2 Reference Drive
  4. 3Digital Interface
    1. 3.1 Serial Interface (SPI)
    2. 3.2 I2C Bus for the Onboard EEPROM
  5. 4Power Supplies
  6. 5ADS8860EVM Initial Setup
    1. 5.1 Software Installation
  7. 6EVM Operation
    1. 6.1 Connecting the Hardware
    2. 6.2 Using the Optional Precision Signal Injector (PSI)
    3. 6.3 EVM GUI Global Settings for ADC Control
    4. 6.4 Time Domain Display
    5. 6.5 Frequency Domain Display
    6. 6.6 Histogram Display
  8. 7Bill of Materials, Schematics, and Layout
    1. 7.1 Bill of Materials
    2. 7.2 Board Layouts
    3. 7.3 Schematics
  9. 8Reference
  10. 9Revision History

6.5 Frequency Domain Display

The spectral analysis tool, shown in Figure 6-6, is intended to evaluate the dynamic performance (SNR, THD, SFDR, SINAD, and ENOB) of the ADS8860 ADC through single-tone sinusoidal signal FFT analysis using the 7-term Blackman-Harris window setting. The FFT tool includes windowing options that are required to mitigate the effects of non-coherent sampling (this discussion is beyond the scope of this document). The 7-Term Blackman Harris window is the default option and has sufficient dynamic range to resolve the frequency components of up to a 24-bit ADC. The None option corresponds to not using a window (or using a rectangular window) and is not recommended.

GUID-46590605-730A-489B-89FB-EC12E80B021E-low.gifFigure 6-6 Spectral Analysis Tool