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

4 Summary

This document gives an overview of the features and operation of the SAR ADC model. The model covers the analog and transient behavior of many SAR ADCs. The model allows the use of PSpice parameters to adjust its behavior. Texas Instruments includes models with the parameters prepopulated for popular ADC devices. The models are found in the PSpice for TI library and on TI.com.
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