PCM1803ADBR datasheet by Texas Instruments

PCM1803ADBR Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the PCM1803ADBR?
  The recommended power-up sequence is to apply VCC first, followed by AVCC, and then the analog input signals. This ensures proper operation and prevents damage to the device.
• How do I optimize the analog input filter design for the PCM1803ADBR?
  The analog input filter should be designed to reject noise and interference, while allowing the desired signal to pass through. A 3rd-order Butterworth filter with a cutoff frequency of around 10 kHz is a good starting point. The filter components should be chosen to minimize noise and distortion.
• What is the recommended clock frequency for the PCM1803ADBR?
  The recommended clock frequency for the PCM1803ADBR is 256 fs, where fs is the sampling frequency. This ensures that the device operates within its specified performance parameters.
• How do I handle clock jitter in the PCM1803ADBR?
  Clock jitter can be minimized by using a high-quality clock source, such as a crystal oscillator, and by ensuring that the clock signal is properly terminated and filtered. The PCM1803ADBR also has a built-in clock jitter attenuator that can be enabled to reduce the effects of clock jitter.
• What is the maximum input signal level for the PCM1803ADBR?
  The maximum input signal level for the PCM1803ADBR is 2.5 Vrms. Exceeding this level can result in distortion and reduced performance.