SBASAY5 June 2024 ADS8681W
PRODUCTION DATA
The device supports single-ended and differential inputs supporting both bipolar and unipolar input ranges. The output of the device is in straight-binary format for both bipolar and unipolar input ranges.
Figure 6-15 shows the ideal transfer characteristic for all input ranges. The full-scale range (FSR) for each input signal is equal to the difference between the positive full-scale (PFS) and the negative full-scale (NFS) input voltage. The LSB size is equal to FSR / 216. For a reference voltage of VREF = 4.096V, Table 6-4 lists the LSB values corresponding to the different input ranges.
INPUT RANGE | POSITIVE FULL-SCALE (V) | NEGATIVE FULL-SCALE (V) | FULL-SCALE RANGE (V) | LSB |
---|---|---|---|---|
±3V × VREF | 12.288 | –12.288 | 24.576 | 375.0µV |
±2.5V × VREF | 10.24 | –10.24 | 20.48 | 312.5µV |
±1.5V × VREF | 6.144 | –6.144 | 12.288 | 187.5µV |
±1.25V × VREF | 5.12 | –5.12 | 10.24 | 156.25µV |
±0.625V × VREF | 2.56 | –2.56 | 5.12 | 78.125µV |
0V to 3V × VREF | 12.288 | 0 | 12.288 | 187.5µV |
0V to 2.5V × VREF | 10.24 | 0 | 10.24 | 156.25µV |
0V to 1.5V × VREF | 6.144 | 0 | 6.144 | 93.75µV |
0V to 1.25V × VREF | 5.12 | 0 | 5.12 | 78.125µV |