DAC5681ZIRGCR datasheet by Texas Instruments

DAC5681ZIRGCR Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the DAC5681ZIRGCR?
  The recommended power-up sequence is to apply VCC first, followed by AVCC, and then the digital supply (DVCC). This ensures that the internal voltage regulators are powered up correctly.
• How do I optimize the DAC5681ZIRGCR's performance for low noise and high accuracy?
  To optimize performance, use a low-noise power supply, decouple the power pins with high-quality capacitors, and ensure a stable clock signal. Additionally, use a high-impedance output load and minimize digital noise coupling into the analog circuitry.
• What is the maximum clock frequency that can be used with the DAC5681ZIRGCR?
  The maximum clock frequency is 100 MHz, but it's recommended to use a clock frequency of 50 MHz or less to ensure optimal performance and minimize digital noise.
• How do I handle the DAC5681ZIRGCR's output current during power-down or reset?
  During power-down or reset, the DAC output is high-impedance, and the output current is limited to a few microamperes. To prevent damage, ensure that the output is not loaded with a low-impedance load during power-down or reset.
• What is the recommended layout and routing for the DAC5681ZIRGCR's analog and digital signals?
  Keep analog and digital signals separate, use a star-ground configuration, and avoid running digital signals near the analog output pins. Use a solid ground plane and decouple the power pins with high-quality capacitors.