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.
To ensure accurate voltage output, it's essential to use a high-quality voltage reference, such as the Texas Instruments REF5025. Additionally, ensure that the output voltage is buffered with an op-amp, such as the OPA333, to prevent loading effects.
The maximum output current of the DAC8812 is 5mA. Exceeding this current may cause the output voltage to droop or the device to overheat.
To implement a voltage output range other than 0-5V, you can use an external amplifier, such as the OPA333, to scale the output voltage. Alternatively, you can use an external voltage reference, such as the REF5025, to set the output voltage range.
The settling time of the DAC8812 is typically 10μs, but this can vary depending on the output voltage range and the load capacitance. It's essential to ensure that the output has settled before taking a measurement.
DAC8812ICPWR datasheet
by Texas Instruments
