AD9775 datasheet(41/56 Pages) AD

41 / 56 page

AD9775

Rev. E | Page 41 of 56

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102030

FREQUENCY (MHz)

Figure 91. AD9775 Real DAC Output of Complex Input Signal Near

Baseband (Positive Frequencies Only), Interpolation = 4×,

Complex Modulation in AD9775 = +fDAC/4

–100

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750

760

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790

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820

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840

850

FREQUENCY (MHz)

Figure 92. AD9775 Complex Output from Figure 91,

Now Quadrature Modulated by AD8345 (LO = 800 MHz)

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–90

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–50

–40

–30

–20

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102030

FREQUENCY (MHz)

Figure 93. AD9775 Real DAC Output of Complex Input Signal Near

Baseband (Negative Frequencies Only), Interpolation = 4×,

Complex Modulation in AD9775 = −fDAC/4

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–90

–80

–70

–60

–50

–40

–30

–20

–10

750

760

770

780

790

800

810

820

830

840

850

FREQUENCY (MHz)

Figure 94. AD9775 Complex Output from Figure 93,

Now Quadrature Modulated by AD8345 (LO = 800 MHz)

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

100

FREQUENCY (MHz)

Figure 95. AD9775 Real DAC Output of Complex Input Signal Near

Baseband (Positive Frequencies Only), Interpolation = 8×,

Complex Modulation in AD9775 = +fDAC/8

–100

–90

–80

–70

–60

–50

–40

–30

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700

720

740

760

780

800

820

840

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880

900

FREQUENCY (MHz)

Figure 96. AD9775 Complex Output from Figure 95,

Now Quadrature Modulated by AD8345 (LO = 800 MHz)

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