AD9864-EB datasheet(12/44 Pages) AD

12 / 44 page

AD9864

CHANNEL BANDWIDTH (kHz)

10.0

7.5

1000

100

9.5

9.0

8.5

8.0

24-BIT

DATA

16-BIT

DATA

16-BIT DATA

WITH DVGA ENABLED

Figure 15. Noise Figure vs. BW (Minimum Attenuation, fCLK = 26 MSPS)

VGA ATTENUATION (dB)

BW = 15kHz

(K = 0, M = 9)

BW = 75kHz

(K = 0, M = 1)

BW = 50kHz

(K = 0, M = 2)

Figure 16. Noise Figure vs. VGA Attenuation (fCLK = 18 MSPS)

IFIN (dB)

–45

–130

–30

–40

–50

–60

–70

–80

–90

–100

–110

–120

–42

–39

–36

–33

–30

–27

–24

–5

–30

–10

–15

–20

–25

–40

–35

–45

Figure 17. IMD vs. IFIN (fCLK = 13 MSPS)

VGA ATTENUATION (dB)

11.5

7.0

11.0

10.5

10.0

9.5

9.0

8.5

8.0

7.5

BW = 6.78kHz

(K = 0, M = 15)

BW = 12.04kHz

(K = 0, M = 8)

BW = 27.08kHz

(K = 0, M = 3)

Figure 18. Noise Figure vs. VGA Attenuation (fCLK = 13 MSPS)

VGA ATTENUATION (dB)

BW = 27.08kHz

(K = 1, M = 9)

BW = 90.28kHz

(K = 1, M = 2)

BW = 135.42kHz

(K = 1, M = 1)

Figure 19. Noise Figure vs. VGA Attenuation (fCLK = 26 MSPS)

IFIN (dBm)

–45

–130

–30

–40

–50

–60

–70

–80

–90

–100

–110

–120

–42

–39

–36

–33

–30

–27

–24

–5

–30

–10

–15

–20

–25

–40

–35

–45

Figure 20. IMD vs. IFIN (fCLK = 18 MSPS)

Rev. 0 | Page 12 of 44

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