ADC122S021CIMM/NOPB datasheet by Texas Instruments

ADC122S021CIMM/NOPB Frequently Asked Questions (FAQs)

• What is the recommended input impedance for the ADC122S021?
  The recommended input impedance for the ADC122S021 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 (BUFEN = 1) and set the clock frequency to the lowest available value (e.g., 100 kHz). This reduces noise and increases the signal-to-noise ratio.
• What is the maximum sampling rate for the ADC122S021?
  The maximum sampling rate for the ADC122S021 is 200 kSPS (kilosamples per second). However, this rate may vary depending on the specific application and system requirements.
• How do I handle overvoltage conditions on the analog input pins?
  To handle overvoltage conditions on the analog input pins, use external voltage-limiting resistors or clamping diodes to prevent damage to the ADC. Additionally, consider using input protection devices, such as TVS (transient voltage suppressor) diodes.
• What is the purpose of the SYNC pin, and how do I use it?
  The SYNC pin is used to synchronize the ADC's conversion process with an external clock or trigger signal. To use it, connect the SYNC pin to an external clock or trigger signal, and ensure that the signal is synchronized with the ADC's conversion process.