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 stable reference voltage, minimize noise on the analog input pins, and use a low-noise power supply. Additionally, consider using a voltage reference buffer, such as the REF3030, to further improve accuracy.
The maximum output current of the DAC813AU is 5mA. Exceeding this current may cause the output voltage to droop or the device to overheat, leading to reduced accuracy or even damage.
Yes, the DAC813AU can be used in a ratiometric configuration, where the reference voltage is derived from the power supply. However, this requires careful consideration of the power supply noise and voltage variation to ensure accurate output voltages.
To handle the digital interface in a noisy environment, use proper PCB layout techniques, such as separating analog and digital grounds, and using shielding or guard rings to reduce electromagnetic interference (EMI). Additionally, consider using a digital isolator, such as the ISO7221, to isolate the digital interface from the noisy environment.
DAC813AU/1K datasheet
by Texas Instruments
