米6体育平台手机版

SPRZ423K October 2014 – May 2024 TMS320F28075 , TMS320F28075-Q1 , TMS320F28076

1
Abstract
1Usage Notes and Advisories Matrices
1. 1.1 Usage Notes Matrix
2. 1.2 Advisories Matrix
2Nomenclature, Package Symbolization, and Revision Identification
3Silicon Revision C Usage Notes and Advisories
1. 3.1 Silicon Revision C Usage Notes
2. 3.2 Silicon Revision C Advisories
  1. Advisory
  2. Advisory
  3. Advisory
  4. Advisory
  5. Advisory
  6. Advisory
  7. Advisory
  8. Advisory
  9. Advisory
  10. Advisory
  11. Advisory
  12. Advisory
  13. Advisory
  14. Advisory
  15. Advisory
  16. Advisory
  17. Advisory
  18. Advisory
  19. Advisory
  20. Advisory
  21. Advisory
  22. Advisory
  23. Advisory
  24. Advisory
  25. Advisory
  26. Advisory
  27. Advisory
  28. Advisory
  29. Advisory
  30. Advisory
  31. Advisory
  32. Advisory
  33. Advisory
  34. Advisory
  35. Advisory
  36. Advisory
4Silicon Revision B Usage Notes and Advisories
1. 4.1 Silicon Revision B Usage Notes
2. 4.2 Silicon Revision B Advisories
  1. Advisory
  2. Advisory
  3. Advisory
  4. Advisory
  5. Advisory
  6. Advisory
  7. Advisory
  8. Advisory
  9. Advisory
5Documentation Support
6Trademarks
7Revision History

Advisory

ADC: 12-Bit Input Capacitance When Switching Channel Groups

Revisions Affected

Details

The ADC input model should be used to select the sample-and-hold (S+H) duration for each ADC input. For the revisions affected, if the currently converting channel is an even-numbered channel and the previously converted channel was an odd-numbered channel (or vice versa), then the 12-bit input model will not accurately predict ADC input performance. Under these conditions, an additional capacitance should be added to the model. This capacitance has a value of 11.5 pF and should be placed between the S+H switch and R_on as shown in Figure 4-1.

TMS320F28076 TMS320F28075 Single-Ended Input Model

Figure 4-1 Single-Ended Input Model

Workarounds

For the revisions affected, when subsequent conversions switch between channel groups, the S+H duration should be chosen to account for the additional capacitance.