Is there any other ADC reference board for digitizing a single I and Q signal ?

Hi Bridget

The ADC08D1520RB is provided with direct access to the differential inputs to allow flexibility for use in AC-coupled or DC-coupled mode.

You can use one of these balun boards (at links below) to convert your single ended signal to the ADC08D1520RB differential inputs.

http://www.ti.com/tool/adc-wb-bb

http://www.ti.com/tool/adc-ld-bb

Best regards,

Jim B

Hi Bridget

I have a few more questions:

What is the frequency of the signal you are applying?

Are you using DC-blocks between the output of the balun board and the ADC board inputs?

Which balun board are you using, the LD or WB type? The LD type only works well down to around 300-400 MHz. The WB type should work down to around 4.5 MHz or so.

Thanks,

Jim B

Hi Jim, 

Thanks for your reply. 

As the spec of balun LD spec said its frequency range is [400MHz, 3GHz], the signal generated is 500MHz and is fed in balun LD type. Since the signal is for I channel, I did not apply any DC block between balun board and ADC board input. 

Pleae 

Hi Jim, 

Thanks for your reply. 

As the spec of balun LD spec said its frequency range is [400MHz, 3GHz], the signal generated is 500MHz and is fed in balun LD type. Please share me your thought on what might cause this. 

Thank you!

Best Regards,

-Bridget

I also tried to use DC block between balun LD board and ADC board, when I call WvBoardReadCaptureData function when I use Q channel. However, error is returned to indicate there is no data is captured successfully.