ADC128D818CIMT/NOPB datasheet by Texas Instruments

ADC128D818CIMT/NOPB Frequently Asked Questions (FAQs)

• What is the recommended input impedance for the ADC128D818?
  The recommended input impedance for the ADC128D818 is 1 kΩ to 10 kΩ. This ensures proper signal attenuation and prevents signal reflections.
• How do I optimize the ADC's performance for low-frequency signals?
  To optimize the ADC's performance for low-frequency signals, use the internal buffer amplifier, and consider using an external RC filter to remove high-frequency noise. Also, ensure the input signal is properly filtered and amplified before feeding it to the ADC.
• What is the maximum sampling rate I can achieve with the ADC128D818?
  The maximum sampling rate of the ADC128D818 is 500 kSPS. However, this rate may vary depending on the specific application, input signal frequency, and system noise.
• How do I handle metastability issues in the ADC128D818?
  To handle metastability issues, use the ADC's built-in metastable state detection and correction mechanism. Additionally, ensure proper signal synchronization, and consider using a metastable-resistant clocking scheme.
• What is the recommended power-up sequence for the ADC128D818?
  The recommended power-up sequence for the ADC128D818 is to power up the analog supply (AVDD) first, followed by the digital supply (DVDD), and then the clock signal. This ensures proper initialization and prevents latch-up.