JAJSQO0 june 2023 DAC539E4W
PRODUCTION DATA
The comparators and the internal reference in DAC539E4W can be independently powered down through the EN-INT-REF and VOUT-PDN-x bits in the COMMON-CONFIG register, as shown in Figure 7-2. At power up, the DAC output and the internal reference are disabled by default. In power-down mode, the comparator outputs (OUTx pins) are in a high-impedance state. To change this state to 10 kΩ-AGND or 100 kΩ-AGND (at power up), use the VOUT-PDN-x bits.
The comparator power-up state can be programmed to any state (power-down or normal mode) using the NVM. Table 7-7 shows the comparator power-down bits.
REGISTER | VOUT-PDN-x[1] | VOUT-PDN-x[0] | DESCRIPTION |
---|---|---|---|
COMMON-CONFIG | 0 | 0 | Power up channel x. |
0 | 1 | Power down channel x with 10 kΩ to AGND. | |
1 | 0 | Power down channel x with 100 kΩ to AGND. | |
1 | 1 | Power down channel x to Hi-Z. (default). |