DAC8822QCDBTR datasheet by Texas Instruments

DAC8822QCDBTR Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the DAC8822?
  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 DAC8822?
  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 OPA2824, to minimize output impedance and improve accuracy.
• What is the maximum output current of the DAC8822?
  The maximum output current of the DAC8822 is 5mA. Exceeding this current may cause damage to the device or affect its accuracy.
• How do I implement a voltage output range other than 0-5V?
  To implement a voltage output range other than 0-5V, you can use an external amplifier, such as the OPA2824, to scale the output voltage. Alternatively, you can use an external voltage reference, such as the REF5025, to set the output voltage range.
• What is the settling time of the DAC8822?
  The settling time of the DAC8822 is typically 10μs, but this can vary depending on the output voltage range and the load capacitance. It is essential to ensure that the output has settled before taking a measurement.