AFE58JD32: ADC data acquisition problem

    I am using the LVDS mode of AFE58JD32 for data acquisition. I can collect the correct ramp data, sync data and deskew data. There is a problem when collecting ADC data.

Now I have two questions：

1.When I collect ADC data after turning off the LNA and LPF, there will be a lot of glitches (figure1)in the data, but there are no glitches(figure 2) in the ramp data.

                                                                                                                                   figure 1

                                                                                                                                   figure 2

2.When I enable LNA and LPF and connect the waveform generator to the signal input section, even if the waveform generator does not output a signal, the ADC output will be full scale (figure 3).

                                                                                                                                  figure 3

    The following are some configurations about ADC

1.The ADC_CLK is 10MHz(5Msps/ch);

2.The data interface is LVDS  x1 rate;

3.The Digital processoing module and the Demodulator  are bypassed;