Datasheet

AD9777
Rev. C | Page 44 of 60
01020304050
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0
AMPLITUDE (dBm)
FREQUENCY (MHz)
02706-089
Figure 89. AD9777, Real DAC Output of Complex Input Signal Near Baseband
(Positive Frequencies Only), Interpolation = 4×, No Modulation in AD9777
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0
AMPLITUDE (dBm)
750 760 770 780 790 800 810 820 830 840 850
FREQUENCY (MHz)
02706-090
Figure 90. AD9777 Complex Output from Figure 89, Now Quadrature
Modulated by AD8345 (LO = 800 MHz)
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–20
–10
0
AMPLITUDE (dBm)
0 1020304050
FREQUENCY (MHz)
02706-091
Figure 91. AD9777, Real DAC Output of Complex Input Signal Near
Baseband (Positive Frequencies Only), Interpolation = 4×,
Complex Modulation in AD9777 = +f
DAC
/4
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0
AMPLITUDE (dBm)
750 760 770 780 790 800 810 820 830 840 850
FREQUENCY (MHz)
02706-092
Figure 92. AD9777 Complex Output from Figure 91, Now Quadrature
Modulated by AD8345 (LO = 800 MHz)
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–90
–80
–70
–60
–50
–40
–30
–20
–10
0
AMPLITUDE (dBm)
0 1020304050
FREQUENCY (MHz)
02706-093
Figure 93. AD9777, Real DAC Output of Complex Input Signal Near
Baseband (Negative Frequencies Only), Interpolation = 4×,
Complex Modulation in AD9777 = −f
DAC
/4
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
AMPLITUDE (dBm)
750 760 770 780 790 800 810 820 830 840 850
FREQUENCY (MHz)
02706-094
Figure 94. AD9777 Complex Output from Figure 93, Now Quadrature
Modulated by AD8345 (LO = 800 MHz)