DAC121C085CIMM/NOPB datasheet by Texas Instruments

DAC121C085CIMM/NOPB Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the DAC121C085?
  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 DAC121C085?
  To ensure accurate voltage output, it's essential to use a stable and low-noise voltage reference (VREF) and to decouple the VREF pin with a capacitor to reduce noise. Additionally, use a low-impedance output buffer amplifier if the load impedance is high.
• What is the maximum output current of the DAC121C085?
  The maximum output current of the DAC121C085 is 5 mA. Exceeding this current may cause the output voltage to droop or the device to overheat.
• How do I handle the DAC121C085's digital inputs during power-up and power-down?
  During power-up and power-down, it's recommended to keep the digital inputs (SCL, SDA, and CS) in a high-impedance state or tied to a fixed logic level to prevent unwanted device operation or latch-up conditions.
• What is the thermal impedance of the DAC121C085 package?
  The thermal impedance of the DAC121C085 package (MSOP-8) is typically around 45°C/W. This information is essential for thermal management and heat sink design.