SBAU206B april   2015  – may 2023 ADS1262 , ADS1263

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1EVM Overview
    1. 1.1 ADS1263EVM Kit
    2. 1.2 ADS1263EVM Board
  5. 2Getting Started With the ADS1263EVM
  6. 3Analog Interface
    1. 3.1 Analog Input Options
      1. 3.1.1 ADS1263 Integrated Input Functions
        1. 3.1.1.1 ADC Inputs
        2. 3.1.1.2 IDAC Output
        3. 3.1.1.3 VBIAS Output
        4. 3.1.1.4 External Reference
        5. 3.1.1.5 Test DAC Output
        6. 3.1.1.6 GPIO
      2. 3.1.2 Analog Sensor Connections
        1. 3.1.2.1 Connecting a Thermocouple to J4 on the ADS1263EVM
        2. 3.1.2.2 Connecting a Thermistor to J3 on the ADS1263EVM
        3. 3.1.2.3 Using Thermistor RT1 for Thermocouple Cold-Junction Compensation
        4. 3.1.2.4 Connecting an RTD to J3 on the ADS1263EVM
          1. 3.1.2.4.1 Connecting a 2-Wire RTD
          2. 3.1.2.4.2 Connecting a 3-Wire RTD
          3. 3.1.2.4.3 Connecting a 4-Wire RTD
    2. 3.2 ADC Connections and Decoupling
    3. 3.3 Clocking
    4. 3.4 Voltage Reference
  7. 4Digital Interface
  8. 5Power Supplies
  9. 6Software Installation
  10. 7EVM Operation and GUI
    1. 7.1 Connecting the EVM Hardware
    2. 7.2 EVM GUI Global Settings for ADC Control
    3. 7.3 Time Domain Display
    4. 7.4 Frequency Domain Display
    5. 7.5 Histogram Display
    6. 7.6 Using the GUI to Control ADC2
  11. 8Bill of Materials, PCB Layout, and Schematics
    1. 8.1 Bill of Materials
    2. 8.2 PCB Layout
    3. 8.3 Schematics
  12. 9Revision History

7.4 Frequency Domain Display

Figure 7-5 shows the spectral analysis tool that evaluates the dynamic performance (SNR, THD, SFDR, SINAD, and ENOB) of the ADS1263. This dynamic performance is calculated by 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 a 32-bit ADC. The None option corresponds to not using a window (or using a rectangular window) and is not recommended.

GUID-20220719-SS0I-GDK3-0FGQ-WZZMQQRDRH63-low.pngFigure 7-5 ADS1263EVM GUI Frequency Domain Display Page