The recommended power-up sequence is to apply VCC first, followed by AVCC, and then the digital supply (DVCC). This ensures that the analog and digital sections of the device are powered up correctly.
To ensure accurate voltage output, it is essential to use a stable reference voltage, minimize noise on the reference input, and use a low-noise power supply. Additionally, the output voltage should be buffered with an op-amp to prevent loading effects.
The maximum output current of the DAC8565IAPW is 5 mA. Exceeding this current limit can cause damage to the device or affect its accuracy.
The SYNC pin is used to synchronize the DAC's output with an external clock signal. It should be connected to a clock signal or tied to VCC or GND if not used. Leaving it floating can cause unpredictable behavior.
The CLR pin is used to clear the DAC's output to a zero-scale voltage. It can be used to reset the output voltage to a known state during power-up or when the device is not in use.