AD9613

Hi,

I want to use AD9613 for my dual channel application. I have seen two flavors in ad9613 interleaved parallel lvds and channel multiplexed even/odd lvds. I want to understand

1. why now there are lvds output for high speed adc/dac?. I understand that lvds are for noise reduction and can easily applied to fpga etc.

2. I used ad9248 with two channels for a similar application. is ad9613 be used as ad9248 with dual channel output?

3.  so is it like if i apply I and Q channel analog signal to ad9613 i get the output on these lvds?

4. should i definitely have the lvds layout on the data lines which are running to fpga?

5. what is difference between channel multiplexed and interleaved?

Thanks for replying

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  • 0
    •  Analog Employees 
    on Jul 18, 2012 5:51 PM

    Hi,

    If you refer to Figures 2 and 4 in the datasheet I think this will help.  If in parallel interleaved mode the output pair for D0+/- will have D0A on the rising edge of DCO and D0B on the falling edge of DCO.  It is similar for D1+/- through D11+/-.  This is the default mode for the part.

    There are converter ICs that will take you from CMOS to LVDS but I have not found one that will work the other way and take you from LVDS to CMOS.  You will need an LVDS compatible FPGA board for the AD9613. 

    What sample rate are you using in your system?  We have the AD9640 14-bit dual that samples at up to 150MSPS that might be an option.

    Regards,

    Jon

Reply
  • 0
    •  Analog Employees 
    on Jul 18, 2012 5:51 PM

    Hi,

    If you refer to Figures 2 and 4 in the datasheet I think this will help.  If in parallel interleaved mode the output pair for D0+/- will have D0A on the rising edge of DCO and D0B on the falling edge of DCO.  It is similar for D1+/- through D11+/-.  This is the default mode for the part.

    There are converter ICs that will take you from CMOS to LVDS but I have not found one that will work the other way and take you from LVDS to CMOS.  You will need an LVDS compatible FPGA board for the AD9613. 

    What sample rate are you using in your system?  We have the AD9640 14-bit dual that samples at up to 150MSPS that might be an option.

    Regards,

    Jon

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