SBAU345A March   2020  – May 2022 PCM1840

 

  1. 1PCM1840 Evaluation Module
    1.     Trademarks
  2. 1Introduction
  3. 2Power Supply
  4. 3Hardware Configuration
    1. 3.1 PCM1840EVM Inputs
      1. 3.1.1 Line Inputs
      2. 3.1.2 Onboard Microphone Input
  5. 4EVM Overview
  6. 5Layer Plots
  7. 6Schematic and Bill of Materials
    1. 6.1 PCM1840EVM Schematic
    2. 6.2 PCM1840EVM Bill of Materials
  8. 7Related Documentation
  9. 8Revision History

3.1.2 Onboard Microphone Input

For the onboard microphone input configuration (shown in Figure 3-3), the PCM1840EVM records the audio captured from the microphone located on the bottom-left edge of the board. MICBIAS is used to power the onboard microphone through J14. J15, and J16 must be installed to connect the microphone output to the ADC inputs. There must not be any connections to J1 during onboard microphone use to preserve the performance of the microphone.

GUID-61E98558-FB89-4A6F-940E-F98C07864AAC-low.pngFigure 3-3 PCM1840EVM Connection for the Onboard Microphone Test