ZHCSEJ3B June 2015 – April 2020 ADS131E08S
PRODUCTION DATA.
This register configures the reference and internal amplifier operation.
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
1 | 1 | VREF_4V | 0 | OPAMP_REF | PDB_OPAMP | 0 | 0 |
R/W-1h | R/W-1h | R/W-1h | R/W-0h | R/W-0h | R/W-0h | R/W-0h | R-0h |
LEGEND: R/W = Read/Write; -n = value after reset |
Bit | Field | Type | Reset | Description |
---|---|---|---|---|
7-6 | Reserved | R/W | 1h | Reserved.
Must be set to 1. This bit reads high. |
5 | VREF_4V | R/W | 1h | Internal reference voltage.
This bit determines the reference voltage, VREFP. 0 = VREFP is set to 2.4 V 1 = VREFP is set to 4 V |
4 | Reserved | R/W | 0h | Reserved.
Must be set to 0. This bit reads low. |
3 | OPAMP_REF | R/W | 0h | Op amp reference.
This bit determines whether the op amp noninverting input connects to the OPAMPP pin or to the internally-derived supply (AVDD + AVSS) / 2. 0 = Noninverting input connected to the OPAMPP pin 1 = Noninverting input connected to (AVDD + AVSS) / 2 |
2 | PDB_OPAMP | R/W | 0h | Op amp power-down.
This bit powers down the op amp. 0 = Power-down op amp 1 = Enable op amp |
1 | Reserved | R/W | 0h | Reserved.
Must be set to 0. Reads back as 0. |
0 | Reserved | R | 0h | Reserved.
Reads back as either 1 or 0. |