Other Parts Discussed in Thread: MSPM0L2228
Tool/software:
Hi team,
My customer use ADC to read the voltage value and find out the ADC read values are unstable. Below list their test results. Please help clarify if these results are reasonable ? or any suggestion can improve the accuracy ? Thank you.
HW block diagram:
Test 1, at 25 degree Celsius:
| by Multimeter | ADC read value | ADC convert to voltage | Delta |
| 0.162 | 484 | 0.165429688 | 2.12% |
| 0.162 | 471 | 0.160986328 | -0.63% |
| 0.162 | 483 | 0.165087891 | 1.91% |
| 0.162 | 471 | 0.160986328 | -0.63% |
| 0.162 | 484 | 0.165429688 | 2.12% |
| 0.162 | 471 | 0.160986328 | -0.63% |
| 0.162 | 471 | 0.160986328 | -0.63% |
| 0.162 | 470 | 0.160644531 | -0.84% |
| 0.162 | 471 | 0.160986328 | -0.63% |
| 0.162 | 496 | 0.16953125 | 4.65% |
Test 2, at 85 degree Celsius:
| by Multimeter | ADC read value | ADC convert to voltage | Delta |
| 0.162 | 473 | 0.161669922 | -0.20% |
| 0.162 | 445 | 0.152099609 | -6.11% |
| 0.162 | 512 | 0.175 | 8.02% |
| 0.162 | 489 | 0.167138672 | 3.17% |
| 0.162 | 470 | 0.160644531 | -0.84% |
| 0.162 | 479 | 0.163720703 | 1.06% |
| 0.162 | 469 | 0.160302734 | -1.05% |
| 0.162 | 497 | 0.169873047 | 4.86% |
| 0.162 | 468 | 0.159960938 | -1.26% |
| 0.162 | 509 | 0.173974609 | 7.39% |
