SBAA531 November   2021 ADS8860 , ADS8862 , ADS8881 , ADS9110 , ADS9224R

 

  1.   Trademarks
  2. 1Introduction
  3. 2 Internal Topology of SAR ADC Model
    1. 2.1  Sample and Hold
    2. 2.2  Sample and Hold Timing
    3. 2.3  Reference Transients
    4. 2.4  Bandwidth Modeling
    5. 2.5  Noise Modeling
    6. 2.6  Reference Droop and Reference Noise Errors
    7. 2.7  Gain, Offset, and Input Leakage Modeling
    8. 2.8  Differential input behavior
    9. 2.9  ESD Protection Diodes and Parasitic Capacitance
    10. 2.10 Summary of Parameters
    11. 2.11 Summary of Model Pins
  4. 3Downloading and Using PSpice® Example Projects From Web
    1. 3.1 Selecting the Amplifier and Optimizing the RC Circuit
    2. 3.2 Worst-Case Settling by Adjusting the Reset Capacitor
    3. 3.3 Verification of Reference Droop
    4. 3.4 System Noise Verification
    5. 3.5 Gain, Offset, and Input Leakage Verification
  5. 4Summary

3 Downloading and Using PSpice® Example Projects From Web

The SAR ADC SPICE macromodel was used to develop multiple PSpice® models and example circuits on the web. For example, the ADS8860 has the example projects for the model under Design and Development. Download the ZIP file containing the ADS8860 PSpice Model. Extract the zip file and click on ADS8860.OPJ to open the PSpice project. After the PSpice project loads, you can access the example circuits and simulation profiles. Figure 3-1 shows the example project and emphasizes where important elements reside.

GUID-20211027-SS0I-XHWP-PCTT-VRMVTXHGVDVL-low.gif Figure 3-1 PSpice® Example Project