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ADI ADC + TI DAC ... will be a problem

Question asked by Csound on Jun 12, 2011
Latest reply on Jun 16, 2011 by Csound

Hi Good morning,

 

DAC side:

    Max frequency 512 KHz  ( input signal)

    Sampling rate 2048 KSPS

    Bits per word = 16 bit

    DAC part number = DAC :  DAC8811  ( from TI)

 

ADC Side:

    Max frequency 512 KHz  ( input signal)

    Sampling rate 2048 KSPS

    Bits per word = 14 bit

    ADC :  AD7357  ( from ADI)

 

AM modulated signal is used as input to DAC and received the same in RX. Received signal appears to be having spectral distrurbance when i use 4 tone signal as input at TX.  I found the same when I use 2 Tone as input to DAC. Only during single Tone, DAC appears to be giving out correct. May be i am missing some thing in the above. Or part selection is wrong? ( hope not, in case yes i need to red0 board).

 

Thanks in advance

Kind Regards

jk

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