The recommended power-on sequence is to apply VDD first, followed by VREF, and then the digital inputs. This ensures proper device operation and prevents potential latch-up or damage.
The DAC5574 has an output voltage range of 0 to VREF. To ensure accurate output, it's essential to select a suitable reference voltage (VREF) that matches the desired output range. Additionally, consider the output impedance and load requirements to maintain signal integrity.
The clock frequency affects the DAC5574's settling time, noise performance, and power consumption. A higher clock frequency can improve settling time but may increase noise and power consumption. A lower clock frequency can reduce noise and power consumption but may increase settling time. Optimize the clock frequency based on your specific application requirements.
To minimize noise and glitches, use a low-noise power supply, decouple the power pins with capacitors, and use a stable reference voltage. Additionally, consider using a glitch filter or a low-pass filter on the output to reduce high-frequency noise and transients.
The internal reference voltage (VREFINT) is used to generate the output voltage. It's essential to ensure that VREFINT is stable and accurate to maintain output voltage accuracy. If an external reference voltage is used, it should be connected to the VREF pin, and VREFINT should be disabled by setting the VREFEN pin low.
DAC5574IDGSG4 datasheet
by Texas Instruments
