JAJSHV4C January 2014 – August 2019 ADS1283
PRODUCTION DATA.
The full-scale calibration is a 24-bit word, composed of three 8-bit registers, as shown in Table 21. The full-scale calibration value is 24-bit, straight offset binary, normalized to 1.0 at code 400000h.
REGISTER | BYTE | BIT ORDER | |||||||
---|---|---|---|---|---|---|---|---|---|
FSC0 | LSB | B7 | B6 | B5 | B4 | B3 | B2 | B1 | B0 (LSB) |
FSC1 | MID | B15 | B14 | B13 | B12 | B11 | B10 | B9 | B8 |
FSC2 | MSB | B23 (MSB) | B22 | B21 | B20 | B19 | B18 | B17 | B16 |
Table 22 summarizes the scaling of the full-scale register. A register value of 400000h (default value) has no gain correction (gain = 1). Although the full-scale calibration register value corrects gain errors above one (gain correction < 1), the full-scale range of the analog inputs must not exceed 106% FSR (including calibration) in order to avoid input overload.
FSC REGISTER | GAIN CORRECTION |
---|---|
800000h | 2.0 |
400000h | 1.0 |
200000h | 0.5 |
000000h | 0 |