DAC8820ICDB datasheet by Texas Instruments

DAC8820ICDB Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the DAC8820?
  The recommended power-up sequence is to apply VDD first, followed by AVDD, and then DVDD. This ensures that the internal voltage regulators are powered up correctly.
• How do I ensure accurate voltage output from the DAC8820?
  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 DAC8820?
  The maximum output current of the DAC8820 is 5mA per channel. Exceeding this current limit can cause damage to the device.
• How do I synchronize multiple DAC8820 devices?
  To synchronize multiple DAC8820 devices, use the SYNC pin to synchronize the internal clock of each device. This ensures that all devices update their outputs simultaneously.
• What is the purpose of the LDAC pin on the DAC8820?
  The LDAC (Load DAC) pin is used to update the output voltage of the DAC. When LDAC is low, the output voltage is updated with the new value. When LDAC is high, the output voltage is latched and held until LDAC goes low again.