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 is essential to use a low-noise, low-impedance voltage reference, and to decouple the output with a capacitor to reduce noise and oscillations.
The maximum output current of the DAC7644EB is 10 mA. Exceeding this current may cause damage to the device or affect its accuracy.
During power-up and power-down, it is recommended to keep the digital inputs in a high-impedance state or tie them to a fixed logic level to prevent unwanted device behavior.
To minimize noise and ensure accurate operation, it is recommended to use a star-ground configuration, keep analog and digital traces separate, and use a solid ground plane.
DAC7644EB datasheet
by Texas Instruments
