AD9246-125EB datasheet(14/45 Pages) AD

14 / 45 page

AD9246

Rev. A | Page 13 of 44

–140

62.500

FREQUENCY (MHz)

–20

–40

–60

–80

–100

–120

15.625

31.250

46.875

125MSPS

29.1MHz @ –7dBFS

32.1MHz @ –7dBFS

SFDR = 85dBc (92dBFS)

Figure 24. AD9246-125 Two-Tone FFT with fIN1 = 29.1 MHz, fIN2 = 32.1 MHz

–140

62.500

FREQUENCY (MHz)

–20

–40

–60

–80

–100

–120

15.625

31.250

46.875

125MSPS

169.1MHz @ –7dBFS

172.1MHz @ –7dBFS

SFDR = 84dBc (91dBFS)

Figure 25. AD9246-125 Two-Tone FFT with fIN1 = 169.1 MHz, fIN2 = 172.1 MHz

–20

–40

–80

–100

–60

–120

15.36

30.72

46.08

61.44

FREQUENCY (MHz)

Figure 26. AD9246-125 Two 64k WCDMA Carriers

with fIN = 215.04 MHz, fS = 122.88 MSPS

–120

–90

–6

INPUT AMPLITUDE (dBFS)

SFDR (dBc)

SFDR (dBFS)

IMD3 (dBc)

IMD3 (dBFS)

–20

–40

–60

–80

–100

–78

–66

–54

–42

–30

–18

Figure 27. AD9246 Two-Tone SFDR/IMD vs. Input Amplitude (AIN)

with FIN1 = 29.1 MHz, FIN2 = 32.1 MHz

–120

–90

–6

INPUT AMPLITUDE (dBFS)

SFDR (dBc)

SFDR (dBFS)

IMD3 (dBc)

IMD3 (dBFS)

–20

–40

–60

–80

–100

–78

–66

–54

–42

–30

–18

Figure 28. AD9246 Two-Tone SFDR/IMD vs. Input Amplitude (AIN)

with FIN1 = 169.1 MHz, FIN2 = 172.11 MHz

–120

62.500

FREQUENCY (MHz)

15.625

31.250

46.875

–20

–40

–60

–80

–100

NPR = 62.9dBc

NOTCH @ 18.5MHz

NOTCH WIDTH = 3MHz

Figure 29. AD9246 Noise Power Ratio (NPR)

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