Analog Devices AD9272, UG-001, AD9273 user manual SPI Controller, MODES8 Box

Evaluation Board User Guide UG-001

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Figure 18. SPI Controller, MODES(8) Box

7.In the ADC x tab of the SPI Controller, where x is the channel to which an analog input is applied, find the CROSSPOINT SWITCH(2D) box. From the Crosspoint Switch Modes drop-down box, select the cwd2p/n option (see Figure 19).

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Figure 19. SPI Controller, CROSSPOINT SWITCH(2D) Box

8.Examine the spectrum analyzer for the CW Doppler output (see Figure 20 for an example).

	0
	–10
	–20			FREQUENCY = 2.3MHz
				CWD1±, DIFFERENTIAL OUTPUT
(dBm)	–30
	–40
AMPLITUDE	–50
	–60
	–70
	–80					-07782004
	–90
	–100	5	10	15	20	25
	0

FREQUENCY (MHz)

Figure 20. Typical Spectrum Analyzer Display of CWD Output

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