The recommended power-up sequence is to apply VDD first, followed by AVDD, and then DVDD. This ensures that the internal voltage regulators are powered up correctly.
To ensure accurate voltage output, it is 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 OPA2824, to minimize output impedance.
The maximum output current of the DAC8820 is 5mA per channel. Exceeding this current limit may cause damage to the device or affect its accuracy.
To synchronize multiple DAC8820 devices, use the SYNC pin to synchronize the internal clock. This ensures that all devices update their outputs simultaneously, which is essential in applications requiring simultaneous voltage updates.
The LDAC (Load DAC) pin is used to update the DAC output voltage. When LDAC is low, the DAC output is updated with the new voltage value. When LDAC is high, the DAC output is latched and does not change.
DAC8820ICDBR datasheet
by Texas Instruments
