SLASE67A January 2015 – August 2019 ADS54J54
PRODUCTION DATA.
D15 | D14 | D13 | D12 | D11 | D10 | D9 | D8 | D7 | D6 | D5 | D4 | D3 | D2 | D1 | D0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MODE 1 | 0 | 1 | 0 | FOVR THRESH AB | FOVR LENGTH AB | FOVR THRESH CD | FOVR LENGTH CD | 1 | 0 |
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset |
Bit | Field | Type | Reset | Description |
---|---|---|---|---|
D15 | MODE 1 | R/W | 1 | Set bit D15 to 0 for optimum performance |
D13 | R | 1 | Reads back 1 | |
D11:D9 | FOVR THRESH AB | R/W | 111 | Sets fast OVR thresholds for channel A and B
The fast over-range detection is triggered 6 output clock cycles after the overload condition occurs. The threshold at which the OVR is triggered is: Input full scale × [decimal value of <over-range threshold>] / 8. After power-up or reset, the default value is 7 (decimal), which corresponds to an OVR threshold of 1.16-dB below full scale (20 × log(7/8)). |
D8:D7 | FOVR LENGTH AB | R/W | 10 | Determines minimum pulse length for FOVR output
00 = 1 clock cycle 01 = 2 clock cycles 10 = 4 clock cycles 11 = 8 clock cycles |
D6:D4 | FOVR THRESH CD | R/W | 111 | Sets fast OVR thresholds for channel C and D See description for channel A and B |
D3:D2 | FOVR LENGTH CD | R/W | 10 | Determines minimum pulse length for FOVR output
00 = 1 clock cycle 01 = 2 clock cycles 10 = 4 clock cycles 11 = 8 clock cycles |
D1 | R | 1 | Reads back 1 |