DAC7801KU datasheet by Texas Instruments

DAC7801KU Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the DAC7801KU?
  The recommended power-up sequence is to apply VCC first, followed by AVCC, and then the digital inputs. This ensures proper device operation and prevents latch-up.
• How do I handle the output voltage settling time?
  The output voltage settling time can be handled by adding a capacitor (typically 10nF to 100nF) between the output pin and ground. This helps to filter out high-frequency noise and ensures accurate output voltage.
• What is the effect of temperature on the DAC7801KU's performance?
  The DAC7801KU's performance is affected by temperature, with changes in gain error, offset error, and output voltage settling time. Ensure proper thermal management and consider temperature compensation if necessary.
• Can I use the DAC7801KU in a ratiometric configuration?
  Yes, the DAC7801KU can be used in a ratiometric configuration, where the reference voltage is derived from the power supply. However, this requires careful consideration of the power supply's noise and ripple characteristics.
• How do I minimize digital noise coupling into the analog output?
  To minimize digital noise coupling, use separate analog and digital ground planes, keep digital signals away from the analog output, and use shielding or guard rings around the analog output.