The recommended power-up sequence is to apply VCC first, followed by AVCC, and then the digital inputs. This ensures proper device operation and prevents potential latch-up conditions.
To ensure accurate voltage output, it's essential to use a high-precision voltage reference, such as the Texas Instruments REF5025. Additionally, ensure that the output voltage is buffered with an op-amp, like the OPA333, to minimize output impedance and improve load regulation.
The DAC8831 can drive capacitive loads up to 100 nF. However, it's recommended to limit the capacitive load to 10 nF or less to ensure stability and prevent oscillations.
To implement a bipolar output voltage range, you can use an op-amp, such as the OPA333, in an inverting configuration. This will allow you to generate a negative output voltage range. Alternatively, you can use a voltage translator, like the Texas Instruments TXB0104, to level-shift the output voltage.
To minimize noise and ensure accurate operation, it's recommended to follow a star-grounding layout, keep analog and digital signals separate, and use a solid ground plane. Additionally, use short, direct traces for the output voltage and reference voltage connections.
DAC8831IBDR datasheet
by Texas Instruments
