AFE7920: Receive Sampling Type

Joseph Blank

Part Number: AFE7920

Tool/software:

Hello TI Folks,

I was hoping to get some information on the sampling type for the AFE7920. Specifically, I would like to know if the receive sampling (3GSps) is complex sampling or Nyquist sampling. Could someone point me toward the part of the datasheet for the AFE7920 that supports either claim?

Thank you!

Regards,

Joe

1 month ago

+1 Simran Nanda 1 month ago

TI__Intellectual 2256 points

Hi Joe,

You can request access to the full datasheet here: https://www.ti.com/drr/opn/AFE79XX-WI-DESIGN

Thank you!

BR,

Simran

0 Joseph Blank 1 month ago in reply to Simran Nanda

Prodigy 30 points

Thank you Simran! I've gone ahead and filled out the request form.

0 Kang Hsia 1 month ago in reply to Joseph Blank

TI__Guru* 76024 points

Joe,

to clarify, the AFE7920 is an RF sampling based ADC that can sample up to 3GSPS. The ADC can sample beyond the first Nyquist zone as long as the bandwidth of the signal is within the DDC bandwidth. For example, you can sample a 1800MHz signal with 100MHz bandwidth. The ADC will have DDC filter to center around the 2nd Nyquist zone of the ADC, and provide the associated filtering to the signal to downconvert the signal. The output of the DDC filter is a complex I/Q signal.

-Kang

RF & microwave

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AFE7920: Receive Sampling Type