DAC7725NB datasheet by Texas Instruments

DAC7725NB Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the DAC7725NB?
  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 sections of the device are powered up in the correct order.
• How do I ensure accurate voltage output from the DAC7725NB?
  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.
• What is the maximum output current of the DAC7725NB?
  The maximum output current of the DAC7725NB is 10 mA. Exceeding this current limit can cause damage to the device or affect its accuracy.
• Can I use the DAC7725NB in a ratiometric configuration?
  Yes, the DAC7725NB can be used in a ratiometric configuration, where the output voltage is proportional to the reference voltage. This configuration is useful in applications where the output voltage needs to track changes in the reference voltage.
• How do I minimize noise and glitches in the output of the DAC7725NB?
  To minimize noise and glitches, it is recommended to use a low-noise power supply, decouple the power supply lines, and use a low-pass filter to filter the output voltage. Additionally, the digital inputs should be properly terminated and shielded to reduce electromagnetic interference.