Datasheet

TEST AFE5809

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Figure 8. Ramp Waveform Output

8.2 Step 2: Single Tone FFT

• Select Frequency from the display control on the TSW1400 GUI to display the FFT.

• Connect Channel 1 of the AFE5809EVM to a signal generator through a BP filter. If a BP filter is not

present, the result is not good.

• Set the amplitude of the signal generator to -25 dBm.

• Set the frequency of the signal generator to the value in the "ADC Input Target Frequency" field of the

TSW GUI.

• Change the window option to Hanning if using the onboard clock. This is because the input signal and

the onboard CMOS clock are noncoherent.

• Press the Capture button to get the test result.

• Repeat for Channel 2 through Channel 8.

AFE5809EVM Evaluation Module SLOU338A–October 2012–Revised November 2012

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