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TLV320AIC3101  HAS NOSIE ON LINE OUT

Question asked by zhang han on Sep 25, 2017
Latest reply on Sep 29, 2017 by zhang han

TODAY I encouter a problem。my  schematic is as follows。now the value of C20 and C24 is 0.1uf. and the resistor  R218 and R216 is not populated.my platform is MCIMX6Q5EYM10AD。 I have two single  end input  AUDIO2_IN and AUDIO1_IN ,which connected to  outer interface ,when i test  i  connect a line jack to  AUDIO2_IN and AUDIO1_IN and gnd, and  connected another jack to LINEOUT_L and  LINEOUT_R  and gnd.then the program  make a loop between audio2_in  and  lineout , i  play a music into  the audio_1in and  audio2_in,while i hear  the music through a Jack  connected to  lineout。I  find there SO MUCH noise  ,what was wrong ,can somebody  help me ?very worried

  

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