SBAS633E February 2016 – August 2022 ADS8681 , ADS8685 , ADS8689
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
This register controls the configuration of the internal reference and input voltage ranges for the converter.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
Reserved | |||||||||||||||
R-0000h | |||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Reserved | Reserved | INTREF_ DIS | Reserved | RANGE_SEL[3:0] | |||||||||||
R-00h | R-0b | R/W-0b | R-00b | R/W-<0000>b |
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset; -0, -1 = Condition after application reset; | |||
-<0>, -<1> = Condition after power-on reset | |||
Address for bits 7-0 = 14h | Address for bits 15-8 = 15h | Address for bits 23-16 = 16h | Address for bits 31-24 = 17h |
Bit | Field | Type | Reset | Description |
---|---|---|---|---|
31-16 | Reserved | R | 0000h | Reserved. Reads return 0000h. |
15-8 | Reserved | R | 00h | Reserved. Reads return 00h. |
7 | Reserved | R | 0b | Reserved. Reads return 0b. |
6 | INTREF_DIS | R/W | 0b | Control to disable the ADC internal reference. 0b = Internal reference is enabled 1b = Internal reference is disabled |
5-4 | Reserved | R | 00b | Reserved. Reads return 00b. |
3-0 | RANGE_SEL[3:0] | R/W | 0000b | These bits comprise the 4-bit register that selects the nine input ranges of the ADC. 0000b = ±3 × VREF 0001b = ±2.5 × VREF 0010b = ±1.5 × VREF 0011b = ±1.25 × VREF 0100b = ±0.625 × VREF 1000b = 3 × VREF 1001b = 2.5 × VREF 1010b = 1.5 × VREF 1011b = 1.25 × VREF |