PCM2903CDB datasheet by Texas Instruments

PCM2903CDB Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the PCM2903CDB?
  The recommended power-up sequence is to apply VCC first, followed by VREF, and then the analog and digital inputs. This ensures proper device operation and prevents latch-up.
• How do I optimize the analog input impedance for the PCM2903CDB?
  To optimize the analog input impedance, use a series resistor (Rs) and a capacitor (Cs) in parallel with the input signal. The values of Rs and Cs depend on the specific application and input signal characteristics.
• What is the maximum allowed clock jitter for the PCM2903CDB?
  The maximum allowed clock jitter for the PCM2903CDB is 100 ps. Exceeding this value may result in decreased performance and increased errors.
• Can I use the PCM2903CDB with a separate analog and digital power supply?
  Yes, the PCM2903CDB can be used with separate analog and digital power supplies. However, it is essential to ensure that the power supplies are properly decoupled and filtered to prevent noise and interference.
• How do I handle the digital output data format of the PCM2903CDB?
  The PCM2903CDB outputs data in a 24-bit, MSB-first, two's complement format. The digital output data can be handled using a microcontroller or a dedicated audio codec interface.