DAC7811IDGSTG4 datasheet by Texas Instruments

DAC7811IDGSTG4 Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the DAC7811?
  The recommended power-up sequence is to apply VCC first, followed by VREF, and then the digital inputs. This ensures proper device operation and prevents potential latch-up conditions.
• How do I ensure accurate voltage output from the DAC7811?
  To ensure accurate voltage output, make sure to use a high-precision voltage reference (VREF) and maintain a stable power supply (VCC). Additionally, ensure that the output load is within the recommended range and that the output capacitor is properly sized.
• What is the maximum output current capability of the DAC7811?
  The maximum output current capability of the DAC7811 is 5mA. Exceeding this limit may cause the output voltage to droop or the device to overheat.
• How do I handle the DAC7811's output glitch during power-up or code changes?
  To minimize output glitches, use a soft-start circuit or a glitch-reduction capacitor (e.g., 10nF) in parallel with the output capacitor. Additionally, consider using a power-on reset (POR) circuit to ensure a clean power-up sequence.
• What is the recommended layout and routing for the DAC7811?
  To minimize noise and ensure accurate operation, follow good layout and routing practices: keep analog and digital signals separate, use a solid ground plane, and place the DAC7811 close to the output capacitor and voltage reference.