Analog input DC voltage measurement accuracy
Table 12. DC Accuracy components and specifications. All values are (±)
Range | A/D | Gain error | Offset | INL | Absolute | Gain | Offset |
| data | (% of | error | error (% | accuracy | temperature | temperature |
| rate | reading) |
| of |
| coefficient (% | coefficient |
|
|
|
| range) |
| reading/°C) | (µV/°C) |
|
|
|
|
|
|
|
|
±20 V | 3750 S/s | 0.003 | 98 µV | 0.0008 | 857.600 µV | 0.0006 | 3 |
| 2000 S/s | 0.003 | 61 µV | 0.0008 | 821.185 µV | 0.0006 | 3 |
| 1000 S/s | 0.003 | 27 µV | 0.0008 | 787.226 µV | 0.0006 | 3 |
| 500 S/s | 0.003 | 12 µV | 0.0008 | 772.193 µV | 0.0006 | 3 |
|
|
|
|
|
|
|
|
| 100 S/s | 0.003 | 11 µV | 0.0008 | 771.014 µV | 0.0006 | 3 |
|
|
|
|
|
|
|
|
| 60 S/s | 0.003 | 15 µV | 0.0008 | 774.689 µV | 0.0006 | 3 |
|
|
|
|
|
|
|
|
| 50 S/s | 0.003 | 12 µV | 0.0008 | 771.603 µV | 0.0006 | 3 |
|
|
|
|
|
|
|
|
| 25 S/s | 0.003 | 12 µV | 0.0008 | 772.070 µV | 0.0006 | 3 |
| 10 S/s | 0.003 | 13 µV | 0.0008 | 773.400 µV | 0.0006 | 3 |
| 5 S/s | 0.003 | 14 µV | 0.0008 | 773.579 µV | 0.0006 | 3 |
| 2.5 S/s | 0.003 | 14 µV | 0.0008 | 773.537 µV | 0.0006 | 3 |
|
|
|
|
|
|
|
|
±10 V | 3750 S/s | 0.003 | 42 µV | 0.0008 | 421.600 µV | 0.0006 | 3 |
|
|
|
|
|
|
|
|
| 2000 S/s | 0.003 | 36 µV | 0.0008 | 416.004 µV | 0.0006 | 3 |
|
|
|
|
|
|
|
|
| 1000 S/s | 0.003 | 15 µV | 0.0008 | 395.252 µV | 0.0006 | 3 |
|
|
|
|
|
|
|
|
| 500 S/s | 0.003 | 7 µV | 0.0008 | 387.216 µV | 0.0006 | 3 |
| 100 S/s | 0.002 | 8 µV | 0.0008 | 288.470 µV | 0.0006 | 3 |
| 60 S/s | 0.002 | 10 µV | 0.0008 | 290.090 µV | 0.0006 | 3 |
| 50 S/s | 0.002 | 8 µV | 0.0008 | 287.719 µV | 0.0006 | 3 |
| 25 S/s | 0.002 | 6 µV | 0.0008 | 285.672 µV | 0.0006 | 3 |
|
|
|
|
|
|
|
|
| 10 S/s | 0.002 | 6 µV | 0.0008 | 285.982 µV | 0.0006 | 3 |
|
|
|
|
|
|
|
|
| 5 S/s | 0.002 | 6 µV | 0.0008 | 286.003 µV | 0.0006 | 3 |
|
|
|
|
|
|
|
|
| 2.5 S/s | 0.002 | 6 µV | 0.0008 | 286.086 µV | 0.0006 | 3 |
|
|
|
|
|
|
|
|
±5 V | 3750 S/s | 0.003 | 21 µV | 0.0008 | 210.800 µV | 0.0006 | 2 |
| 2000 S/s | 0.003 | 21 µV | 0.0008 | 210.712 µV | 0.0006 | 2 |
| 1000 S/s | 0.003 | 8 µV | 0.0008 | 198.254 µV | 0.0006 | 2 |
| 500 S/s | 0.002 | 6 µV | 0.0008 | 146.499 µV | 0.0006 | 2 |
|
|
|
|
|
|
|
|
| 100 S/s | 0.002 | 7 µV | 0.0008 | 147.285 µV | 0.0006 | 2 |
|
|
|
|
|
|
|
|
| 60 S/s | 0.002 | 8 µV | 0.0008 | 148.216 µV | 0.0006 | 2 |
|
|
|
|
|
|
|
|
| 50 S/s | 0.002 | 6 µV | 0.0008 | 146.196 µV | 0.0006 | 2 |
|
|
|
|
|
|
|
|
| 25 S/s | 0.002 | 6 µV | 0.0008 | 145.996 µV | 0.0006 | 2 |
| 10 S/s | 0.002 | 6 µV | 0.0008 | 145.820 µV | 0.0006 | 2 |
| 5 S/s | 0.002 | 6 µV | 0.0008 | 145.817 µV | 0.0006 | 2 |
| 2.5 S/s | 0.002 | 6 µV | 0.0008 | 145.810 µV | 0.0006 | 2 |
±2.5 V | 3750 S/s | 0.002 | 13 µV | 0.0008 | 83.000 µV | 0.0006 | 1 |
|
|
|
|
|
|
|
|
| 2000 S/s | 0.002 | 13 µV | 0.0008 | 83.062 µV | 0.0006 | 1 |
|
|
|
|
|
|
|
|
| 1000 S/s | 0.002 | 9 µV | 0.0008 | 79.487 µV | 0.0006 | 1 |
|
|
|
|
|
|
|
|
| 500 S/s | 0.0015 | 9 µV | 0.0008 | 66.232 µV | 0.0006 | 1 |
| 100 S/s | 0.0015 | 9 µV | 0.0008 | 66.685 µV | 0.0006 | 1 |
| 60 S/s | 0.0015 | 10 µV | 0.0008 | 67.014 µV | 0.0006 | 1 |
| 50 S/s | 0.0015 | 8 µV | 0.0008 | 65.314 µV | 0.0006 | 1 |
| 25 S/s | 0.0015 | 8 µV | 0.0008 | 65.901 µV | 0.0006 | 1 |
|
|
|
|
|
|
|
|
| 10 S/s | 0.0015 | 8 µV | 0.0008 | 65.759 µV | 0.0006 | 1 |
|
|
|
|
|
|
|
|
| 5 S/s | 0.0015 | 8 µV | 0.0008 | 65.800 µV | 0.0006 | 1 |
|
|
|
|
|
|
|
|
| 2.5 S/s | 0.0015 | 8 µV | 0.0008 | 65.769 µV | 0.0006 | 1 |
|
|
|
|
|
|
|
|
±1.25 V | 3750 S/s | 0.0025 | 7 µV | 0.0008 | 48.050 µV | 0.0006 | 1 |
35