PCM1804DBR datasheet by Texas Instruments

PCM1804DBR Frequently Asked Questions (FAQs)

• What is the recommended power-on sequence for the PCM1804DBR?
  The recommended power-on sequence is to apply VCC first, followed by VREF, and then the analog input signals. This ensures proper device operation and prevents damage to the device.
• How do I optimize the analog input stage for best performance?
  To optimize the analog input stage, use a low-pass filter to remove high-frequency noise, and ensure the input signal is within the recommended common-mode voltage range (VCM). Also, use a high-impedance source and a low-capacitance cable to minimize signal attenuation.
• What is the recommended clock frequency for the PCM1804DBR?
  The recommended clock frequency for the PCM1804DBR is between 256 fs and 512 fs, where fs is the sampling frequency. This ensures proper device operation and minimizes jitter.
• How do I handle the digital output data from the PCM1804DBR?
  The PCM1804DBR outputs 24-bit data in MSB-first format. Ensure that your receiving device can handle this format and that you are using the correct data alignment and byte ordering.
• What is the maximum allowed input signal amplitude for the PCM1804DBR?
  The maximum allowed input signal amplitude for the PCM1804DBR is 2.5 Vpp differential. Exceeding this amplitude may result in distortion and decreased performance.