SBAU363A February   2021  – March 2022 PCM1820 , PCM1820-Q1 , PCM1821 , PCM1821-Q1 , PCM1822 , PCM1822-Q1

 

  1.   Trademarks
  2. 1Introduction
  3. 2Power Supply
  4. 3Hardware Configuration
  5. 4PCM182xEVM /PCM182xQ1EVM Inputs
    1. 4.1 Onboard Microphone Inputs
    2. 4.2 Line Inputs
  6. 5Layer Plots
  7. 6Schematics
  8. 7Bill of Materials
  9. 8Revision History

4.2 Line Inputs

For the line input configuration, shown in Figure 4-3, the PCM1820/PCM1820-Q1 /PCM1821/PCM1821-Q1 captures the audio signal provided through terminals J1 (IN1) and J2 (IN2). The input accepted in this mode is a differential, 2 VRMS, full-scale audio signal. Single-ended inputs are not supported by the PCM1820/ PCM1820-Q1 device and it is recommended to keep the inputs AC coupled.

Please Note: PCM1822EVM/PCM1822Q1EVM is set up to support single ended inputs.Resistance R3 and R5 are mounted as 0 ohms.

PCM1822/PCM1822-Q1 accepts , 1 VRMS, single ended/differential full-scale audio signal

Figure 4-3 PCM182x/ PCM182x-Q1 Line Inputs