AD9864-EB datasheet(11/44 Pages) AD

Part #	AD9864-EB

Description	IF Digitizing Subsystem

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AD9864

LO DRIVE (dBm)

9.0

–20

–10

0

5

8.6

8.2

7.8

7.4

7.0

8.4

8.0

7.6

7.2

–5

–15

NF

IMD

8.8

0

–20

–40

–60

–80

–30

–50

–70

–10

Figure 9. Noise Figure and IMD vs. LO Drive (VDDx = 3.0 V)

IFIN (dBm)

0

–30

–14

ADC DOES NOT GO INTO

HARD COMPRESSION

–28

–26

–24

–22

–20

–18

–14

–2

–4

–6

–8

–10

–12

2.7V

3.0V

3.3V

3.6V

–16

Figure 10. Gain Compression vs. IFIN

CHANNEL BANDWIDTH (kHz)

10.0

10

7.5

1000

100

9.5

9.0

8.5

8.0

24-BIT

I/Q DATA

16-BIT

I/Q DATA

16-BIT

I/Q DATA WITH

DVGA ENABLED

Figure 11. Noise Figure vs. BW (Minimum Attenuation, fCLK = 13 MSPS)

IFIN (dBm)

–12

–36 –33 –30 –27 –24 –21 –18 –15 –12 –9

–6

–3

–0

–18

–24

–30

–36

–15

–21

–27

–33

Figure 12. Gain Compression vs. IFIN with 16 dB LNA Attenuator Enabled

IFIN (dBm)

–55

–109

–61

–67

–73

–85

–91

–103

–51

–48

–45

–42

–39

–36

–33

–30

2.7V

3.0V

3.6V

3.3V

–115

–97

–79

–15

–42

–18

–21

–24

–30

–33

–39

–45

–36

–27

Figure 13. IMD vs. IFIN

CHANNEL BANDWIDTH (kHz)

10.0

10

7.5

1000

100

9.5

9.0

8.5

8.0

24-BIT

DATA

16-BIT DATA

WITH DVGA ENABLED

16-BIT

DATA

Figure 14. Noise Figure vs. BW (Minimum Attenuation, fCLK = 18 MSPS)

Rev. 0 | Page 11 of 44

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