DAC7678SRGET datasheet by Texas Instruments

DAC7678SRGET Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the DAC7678SRGET?
  The recommended power-up sequence is to apply VCC first, followed by AVCC, and then DVCC. This ensures that the internal voltage regulators are powered up correctly.
• How do I ensure accurate voltage output from the DAC?
  To ensure accurate voltage output, it is essential to use a high-quality voltage reference, such as the Texas Instruments REF5025. Additionally, ensure that the output voltage is buffered with an op-amp, such as the OPA333, to prevent loading effects.
• What is the maximum output current of the DAC7678SRGET?
  The maximum output current of the DAC7678SRGET is 5 mA. Exceeding this current may cause damage to the device or affect its accuracy.
• How do I implement a bipolar output voltage range with the DAC7678SRGET?
  To implement a bipolar output voltage range, use an external op-amp, such as the OPA333, to amplify and shift the output voltage. This requires a negative voltage supply and careful consideration of the op-amp's input and output ranges.
• What is the settling time of the DAC7678SRGET?
  The settling time of the DAC7678SRGET is typically 10 μs, but this can vary depending on the output voltage range, load capacitance, and other factors. Ensure that the DAC is allowed sufficient time to settle before taking a measurement.