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 high-precision voltage reference, such as the Texas Instruments REF5025. Additionally, the DAC8568 requires a stable power supply and a low-noise analog ground plane.
The maximum output current of the DAC8568 is 5 mA per channel. Exceeding this current limit may cause damage to the device or affect its accuracy.
To synchronize multiple DAC8568 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. When LDAC is low, the DAC output is updated with the new data. When LDAC is high, the DAC output is latched and does not change, even if new data is written to the device.