PCM1863DBT datasheet by Texas Instruments

PCM1863DBT Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the PCM1863DBT?
  The recommended power-up sequence is to apply VDD first, followed by AVDD, and then DVDD. This ensures that the internal voltage regulators are powered up correctly.
• How do I optimize the analog input filter for the PCM1863DBT?
  The analog input filter should be optimized based on the specific application requirements. A good starting point is to use a 1st-order RC filter with a cutoff frequency of around 100 kHz to 200 kHz. The filter components should be chosen to minimize noise and distortion.
• What is the maximum input signal amplitude that the PCM1863DBT can handle?
  The maximum input signal amplitude that the PCM1863DBT can handle is 2.5 Vrms. Exceeding this amplitude may result in distortion and decreased performance.
• How do I configure the PCM1863DBT for differential input mode?
  To configure the PCM1863DBT for differential input mode, connect the positive input signal to the INP pin and the negative input signal to the INN pin. Ensure that the input common-mode voltage is within the recommended range of 0.5 V to 2.5 V.
• What is the recommended clock frequency for the PCM1863DBT?
  The recommended clock frequency for the PCM1863DBT is 256 fs, where fs is the sampling frequency. This ensures that the ADC operates within its specified performance range.