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 powered up in the correct order.
To ensure accurate voltage output, it is essential to use a high-precision voltage reference, such as the Texas Instruments REF5025. Additionally, the output voltage should be filtered using a low-pass filter to reduce noise and ripple.
The maximum output current of the DAC7734E is 10 mA. Exceeding this current limit can cause damage to the device or affect its accuracy.
During power-down or reset, the DAC7734E's output is high-impedance, which means it is in a high-impedance state. To prevent unwanted voltage levels, it is recommended to use a pull-down resistor or a buffer amplifier to maintain a stable output voltage.
To minimize noise and ensure accurate performance, it is recommended to follow a star-grounding layout, keep analog and digital traces separate, and use a solid ground plane. Additionally, the DAC output should be routed away from noisy digital signals.
DAC7734E datasheet
by Texas Instruments
