SBAA395B May   2022  – December 2023 PCMD3140 , TLV320ADC3120 , TLV320ADC3140 , TLV320ADC5120 , TLV320ADC5140 , TLV320ADC6120 , TLV320ADC6140

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Near-Field and Far-Field
    1. 1.1 Definition
  5. 2Constituents in the Far-Field Application
  6. 3Understanding of Digital and Analog Microphone
    1. 3.1 Digital PDM Microphone System
    2. 3.2 Analog Microphone with ADC System
  7. 4Quantization Noise Density for Each Microphone
  8. 5Dynamic Range in Far-Field
    1. 5.1 DR
    2. 5.2 DR in Microphone
    3. 5.3 DRE in the TLV320ADC5140/PCM5140-Q1
    4. 5.4 DRE Performance in TLV320ADC5140/PCM5140-Q1
  9. 6Design of Any Microphone with the TLV320ADC51x0/PCM51x0-Q1
    1. 6.1 Structure of the TLV320ADC51x0/PCM51x0-Q1
      1. 6.1.1 Design Example 1: Only Analog Microphone System
      2. 6.1.2 Design Example 2: Only Digital Microphone System
      3. 6.1.3 Design Example 3: Analog and Digital Microphone Combination System
  10. 7Conclusion
  11. 8Revision History

7 Conclusion

By using the advantages of the analog microphones with Texas Instruments’ TLV320ADC51x0/PCM51x0-Q1 system that brings in the far-field application, quantization noise density due to the modulation improves, which brings up the height to the DR system. This leads to the near perfection of the voice recognition system that far-field application requires. The TLV320ADC51x0/PCM51x0-Q1 is an analog or digital microphone input used for an audio analog-to-digital converter that can be designed to be accommodated as needed.