The recommended power-up sequence is to apply VCC first, followed by AVCC, and then the digital inputs. This ensures that the internal voltage regulators are powered up correctly and the device operates as expected.
To ensure accurate voltage output, it is essential to use a high-quality voltage reference, such as the Texas Instruments REF5025. Additionally, the output voltage should be buffered with an op-amp, such as the OPA237, to minimize output impedance and ensure stability.
The maximum output current of the DAC8831 is 5mA. Exceeding this current may cause the output voltage to droop or the device to overheat. If higher output currents are required, an external op-amp or buffer should be used.
During power-down or reset, the digital inputs should be driven low to prevent unwanted output voltage transitions. This can be achieved by using a pull-down resistor or an external logic circuit to drive the inputs low.
The recommended layout and routing for the DAC8831 involves keeping the analog and digital signals separate, using a solid ground plane, and minimizing noise coupling between the analog output and digital inputs. Additionally, the voltage reference and output capacitor should be placed close to the DAC8831 to minimize noise and ensure stability.
DAC8831IDG4 datasheet
by Texas Instruments
