AD9911 데이터 시트보기 (PDF) - Analog Devices

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AD9911

500 MSPS Direct Digital Synthesizer with 10-Bit DAC

Analog Devices 

Data Sheet

0

–10

–20

–30

–40

–50

–60

3

–70

–80

–90

–100

START 0Hz

2

1

25MHz/

1

STOP 250MHz

Figure 25. SpurKiller Disabled and Three Spurs Identified

0

–10

–20

–30

–40

–50

–60

–70

–80

–90

–100

START 0Hz

1

1

25MHz/

STOP 250MHz

Figure 26. SpurKiller Enabled with Three Spurs Reduced (see Figure 25)

0

–10

–20

–30

–40

–50

–60

–70

–80

–90

–100

CENTER 20MHz

4MHz/

SPAN 40MHz

Figure 27. Three Auxiliary Channels Perform Two-Level FSK with Profile Pins.

The three carriers are set to 10 MHz, 20 MHz, and 30 MHz using all three

auxiliary channels.

AD9911

–45

–50

fOUT = 197.7MHz

fOUT = 143.7MHz

–55

–60

fOUT = 98.7MHz

–65

1.5

1.6

1.7

1.8

1.9

2.0

2.1

POWER SUPPLY VOLTAGE (V)

Figure 28. SFDR vs. Supply Voltage (AVDD)

–40

–45

–50

fOUT = 197.7MHz

–55

fOUT = 143.7MHz

–60

–65

0

fOUT = 98.7MHz

0.125 0.250 0.375 0.500 0.625 0.750 0.875 1.000

DAC OUTPUT CURRENT LEVEL (% of Fullscale)

–50

–52

–54

–56

–58

–60

–62

–64

–66

–40

Figure 29. SFDR vs. DAC Output Current

fOUT = 197.7MHz

fOUT = 143.7MHz

fOUT = 98.7MHz

-20

0

20

40

60

80

TEMPERATURE (°C)

Figure 30. SFDR vs. Temperature

Rev. A | Page 15 of 41

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