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 latch-up.
To ensure accurate voltage output, it is essential to use a stable and low-noise reference voltage, decouple the power supplies, and use a low-impedance output load. Additionally, consider using a voltage buffer or op-amp to drive the output if necessary.
The maximum output current capability of the DAC7801LU is 5mA. Exceeding this limit may cause the output voltage to droop or the device to overheat.
To minimize output glitches, use a power-on reset circuit to hold the DAC in a known state during power-up. Additionally, consider using a glitch-reduction capacitor (e.g., 10nF) between the output and ground to filter out high-frequency transients.
To minimize noise and ensure proper operation, keep digital and analog signals separate, use a solid ground plane, and route analog signals away from digital signals. Additionally, use a low-inductance path for the output signal and decouple the power supplies.
DAC7801LU datasheet
by Texas Instruments
