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 circuits are properly initialized.
To ensure accurate voltage output, it's essential to use a high-precision voltage reference, such as the Texas Instruments REF5025. Additionally, ensure that the output voltage is buffered with an op-amp, such as the OPA237, to minimize output impedance and improve load regulation.
The maximum output current of the DAC7574 is 5 mA. Exceeding this current may cause the output voltage to droop or the device to overheat.
The DAC7574 has a 16-bit parallel digital interface. Ensure that the digital signals are properly terminated and that the clock frequency does not exceed 50 MHz. Also, use a pull-up resistor on the /LDAC pin to prevent unwanted DAC updates.
The /CLR pin is an active-low clear input that resets the DAC's output to zero-scale (typically 0 V) when pulled low. This pin can be used to reset the DAC output during power-up or when the system requires a known output state.
DAC7574IDGS datasheet
by Texas Instruments
