AD1835 mono signal possible ?

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Thank you.

Hi,

    I think it should be possible. The AD1835 can be used in DSP mode for this purpose. In this mode it does not differentiatle left/right channel. You can configure the ADSP-21369 SPORTs also in DSP serial mode to receive and send data from/to CODEC.

Best Regards,

Jeyanthi

Hi Jeyanthi,

I configure the AD1835 in "DSP mode" and I keep the ADSP 21369 in OPMODE but I still have one sample which represent my signal ans one sample at zero. Even if the DSP mode does not make the difference between right and left, is it possible that the codec continue to acquire one sample one each in ?

Althought the amplitude of my acquired samples is four time more important that my signal's one. Is there a amplification in the DSP mode ?

Thanks for your answers.

Hi,

    Please refer my answers below:

I configure the AD1835 in "DSP mode" and I keep the ADSP 21369 in OPMODE but I still have one sample which represent my signal ans one sample at zero. Even if the DSP mode does not make the difference between right and left, is it possible that the codec continue to acquire one sample one each in ?

Ans >>  Yes. I think it should be possible.

Althought the amplitude of my acquired samples is four time more important that my signal's one. Is there a amplification in the DSP mode ?

Ans >> Please refer the ADSP-21369 EZ-KIT Lite schematic on the below link:

www.analog.com/static/imported-files/eval_kit_manuals/ADSP-21369%20EZ-KIT%20Lite%20Manual%20Rev%202.2.pdf

Page 78 shows the circuit on the input part of it. You may refer to this for more details.

Best Regards,

Jeyanthi