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audio fore & back conversion

Arjun Prasad1
Prodigy 30 points
Other Parts Discussed in Thread: DAC7554, ADS8344, TLV320AIC3101, OPA1642, TLV3501, PCM1789, DIR9001, PCM1754, DIT4192

Dear sir,

I have excellent ic ads8344(16-bit) & DAC7554(13-bit) in my store.

I want to get audio signal(mic o/p) on ads8344 to digitize.., convert back into, by dac-7554...is it possible ?

if yes, plz any suggestion on ref. level setting !

thank u

  • 0
    TI__Expert 6715 points

    Hi Arjun,

    First, welcome to the E2E forums!

    This may be possible, but using our audio ADC/DACs or CODECs may work better for your situation. The TLV320AIC3101 could do this in a single chip (as well as saving you some money).

    I may be able to recommend a specific part if you let me know a little more about your system. What is your application? Do you plan to do signal processing?

    Regards,

    ~John

  • 0 in reply to John Fedak
    Prodigy 30 points

    SIR John Fedak,

    I got to the take the o/p of MIC(possibly the Human Voice)--DIgitize it-- pass it to Digital laser driver(TTL levels) where we get optical signal---travelling along 10mts of fiber--it will be collected by photo-diode--where TLV3501 give TTL output--pass this one to D/A conveter---then amplified using OPA1642....

    Already, i have done above process using analog form...but now i want to have digital experience good for my knowledge...

    Also, I have nearly 10 no's(8344 & 7554) in stock..,

    finally, TLV320AIC3101 -- can u expand this one plz..

    thank u.

  • 0 in reply to Arjun Prasad1
    TI__Expert 6715 points

    Hi Arjun,

    With your system, the TLV320AIC3101 would probably not be the best device.

    Here is my recommendation using devices from TI's audio portfolio (as your application is audio). From the output of your MIC (single-ended or differential) I would use the appropriate A/D converter. Then I would use a DIT4192 to go to an optical driver then use a DIR9001 to receive the signal and use a PCM1789 (Diff) or PCM1754 (SE) as the DAC.

    Regards,

    ~John