Hi, I am using a dual channel ADC to sample quadrature RF receiver. I write the data though SPI to my PC and process it there afterwards. I have my test setup as following. In the first measurement feeding channel 1 with a sine wave and channel 2 is open. In the second measurement I feed channel 2 with a sine and channel 1 is open. What I see is that channel 1 is always good, e.g., I can very clearly see the sine wave I feed in, but on the second channel I see the sine wave wrapped, .e.g, there are jump in the amplitude. I can still recognize the signal to be sine wave but I cannot explain to myself those jumps (wraps) . Do you have any ideas or suggestions why this wrapping would occur?