ZHCSIK6C November 2017 – November 2019 ADS8166 , ADS8167 , ADS8168
PRODUCTION DATA.
This register selects the optimal offset calibration when using an external reference input. When using an internal reference, do not write to this register. See the Reference Buffer section for more details.
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
0 | 0 | 0 | 0 | 0 | REF_SEL[2:0] | ||
R-0b | R-0b | R-0b | R-0b | R-0b | R/W-000b |
Bit | Field | Type | Reset | Description |
---|---|---|---|---|
7-3 | 0 | R | 0 0000b | Reserved bits. Reads return 0 0000b. |
2-0 | REF_SEL[2:0] | R/W | 000b | These bits select the external reference range for optimal offset.
000b = Optimum offset calibration for VREF = 5.0 V 001b = Optimum offset calibration for VREF = 4.5 V 010b = Optimum offset calibration for VREF = 4.096 V 011b = Optimum offset calibration for VREF = 3.3 V 100b = Optimum offset calibration for VREF = 3.0 V 101b = Optimum offset calibration for VREF = 2.5 V 110b = Optimum offset calibration for VREF = 5.0 V 111b = Optimum offset calibration for VREF = 5.0 V |