ADRV9361-Z7035 noise on the output


I am working on the ADRV9361-Z7035 with the reference design. I have channel TX1A connected to another receiver that I record whatever is on the channel.

Before even enabling the RX or TX buffers, when I change some of the parameters of AD9361 from LibIIO API such as sampling rate, gain, RF bandwidth, and etc, some bursts appear on the channel.

I'd like to know if there is any way to remove these noises or not.

thank you for your help,


  • +1
    •  Analog Employees 
    on Jan 16, 2020 5:37 PM

    These come from the calibrations the chip performs depending on what is changed. For example, when LO is changed quadrature calibration is performed which generates tones. You can technically turn off some of the calibrations but the chip may not function correctly.