PCM1702U-K datasheet by Texas Instruments

PCM1702U-K Frequently Asked Questions (FAQs)

• What is the recommended power-on sequence for the PCM1702U-K?
  The recommended power-on sequence is to apply VCC first, followed by VREF, and then the analog and digital inputs. This sequence helps prevent latch-up and ensures proper device operation.
• How do I optimize the PCB layout for the PCM1702U-K?
  To optimize the PCB layout, keep the analog and digital grounds separate, use a solid ground plane, and keep the analog and digital signal traces separate. Also, place the decoupling capacitors close to the device pins and use a low-ESR capacitor for the VREF pin.
• What is the recommended clock frequency for the PCM1702U-K?
  The recommended clock frequency for the PCM1702U-K 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 PCM1702U-K?
  The PCM1702U-K outputs 24-bit data in a MSB-first, 2's complement format. The data is output on the D0-D23 pins, with D0 being the MSB. The data is valid on the rising edge of the clock signal.
• What is the thermal impedance of the PCM1702U-K package?
  The thermal impedance of the PCM1702U-K package is typically around 25°C/W. This value can be used to estimate the junction temperature of the device based on the ambient temperature and power dissipation.