DAC7644EB datasheet by Texas Instruments

DAC7644EB Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the DAC7644EB?
  The recommended power-up sequence is to apply VCC first, followed by AVCC, and then the digital inputs. This ensures that the internal voltage regulators are powered up correctly.
• How do I ensure accurate voltage output from the DAC7644EB?
  To ensure accurate voltage output, it is essential to use a low-noise, low-impedance voltage reference, and to decouple the output with a capacitor to reduce noise and oscillations.
• What is the maximum output current of the DAC7644EB?
  The maximum output current of the DAC7644EB is 10 mA. Exceeding this current may cause damage to the device or affect its accuracy.
• How do I handle the DAC7644EB's digital inputs during power-up and power-down?
  During power-up and power-down, it is recommended to keep the digital inputs in a high-impedance state or tie them to a fixed logic level to prevent unwanted device behavior.
• What is the recommended layout and routing for the DAC7644EB?
  To minimize noise and ensure accurate operation, it is recommended to use a star-ground configuration, keep analog and digital traces separate, and use a solid ground plane.