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 ensure that the output voltage is within the specified range of 0 to VREF.
The internal 2.5V reference voltage is used as a default reference voltage for the DAC, but it can be overridden by an external reference voltage if desired. The internal reference is enabled by default, but it can be disabled by tying the REFEN pin to GND.
The DAC7724NB/750 can be interfaced with a microcontroller using a serial interface (SPI or I2C). The microcontroller sends the digital code to the DAC, and the DAC converts it to an analog voltage output. Ensure that the microcontroller and DAC are properly synchronized and that the interface protocol is correctly implemented.
The settling time of the DAC7724NB/750 is typically around 10 μs, but it can vary depending on the output voltage, load capacitance, and other factors. It is essential to ensure that the DAC has sufficient settling time to achieve accurate output voltages.
DAC7724NB/750 datasheet
by Texas Instruments
