DAC7664YCT datasheet by Texas Instruments

DAC7664YCT Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the DAC7664YCT?
  The recommended power-up sequence is to apply VDD 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 DAC7664YCT?
  To ensure accurate voltage output, it's essential to use a low-noise, low-impedance voltage reference (VREF) and to decouple the VREF pin with a capacitor. Additionally, use a stable clock signal and ensure that the digital inputs are properly terminated.
• What is the maximum clock frequency that the DAC7664YCT can handle?
  The DAC7664YCT can handle clock frequencies up to 40 MHz. However, it's recommended to operate the device at a clock frequency of 20 MHz or less to ensure optimal performance and minimize power consumption.
• Can I use the DAC7664YCT in a ratiometric configuration?
  Yes, the DAC7664YCT can be used in a ratiometric configuration, where the output voltage is proportional to the reference voltage (VREF). This configuration is useful when the output voltage needs to track changes in the reference voltage.
• How do I handle the output voltage glitch during power-up or power-down?
  To minimize output voltage glitches during power-up or power-down, it's recommended to use an external output capacitor (e.g., 10 nF) to filter the output voltage. Additionally, consider using a power-up/power-down sequencing circuit to control the device's power supply.