SBAU460 April   2024 PCM1841-Q1

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 EVM Overview
    2. 2.2 Hardware Configuration
      1. 2.2.1 PCM1841Q1EVM Inputs
        1. 2.2.1.1 Line Inputs
        2. 2.2.1.2 Onboard Microphone Input
    3. 2.3 Power Supply
  9. 3Hardware Design Files
    1. 3.1 PCM1841Q1EVM Schematic
    2. 3.2 PCB Layouts
    3. 3.3 PCM1841Q1EVM Bill of Materials
  10. 4Additional Information
    1. 4.1 Trademarks
  11. 5Related Documentation

2.2.1.2 Onboard Microphone Input

For the onboard microphone input configuration (shown in Figure 3-5), the PCM1841Q1EVM 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 2-5 PCM1841Q1EVM Connection for the Onboard Microphone Test