AD9237 datasheet(13/28 Pages) AD

13 / 28 page

AD9237

Rev. 0 | Page 13 of 28

FREQUENCY (MHz)

–20

–40

–60

–80

–100

–120

30 32.5

SNR = 67.0dBFS

SFDR = 87.8dBFS

Figure 20. AD9237-65 Two-Tone FFT, fIN1 = 45 MHz, fIN2 = 46 MHz

FREQUENCY (MHz)

–20

–40

–60

–80

–100

–120

020

SNR = 67.2dBFS

SFDR = 88.3dBFS

Figure 21. AD9237-40 Two-Tone FFT

fIN1 = 45 MHz, fIN2 = 46 MHz

FREQUENCY (MHz)

–20

–40

–60

–80

–100

–120

030

SNR = 66.9dBFS

SFDR = 84.1dBFS

Figure 22. AD9237-65 Two-Tone FFT, fIN1 = 69 MHz, fIN2 = 70 MHz

SFDR dBFS

SFDR dBc

SNR dBc

INPUT AMPLITUDE (AIN)

100

–30

–10

–6.5

–15

–20

–25

SNR dBFS

Figure 23. AD9237-65 Two-Tone SNR/SFDR , vs. Analog Input with

fIN1 = 45 MHz, fIN2 = 46 MHz

SFDR dBFS

SFDR dBc

SNR dBc

INPUT AMPLITUDE (AIN)

100

–30

–10

–6.5

–15

–20

–25

SNR dBFS

Figure 24. AD9237-40 Two-Tone SNR/SFDR , vs. Analog Input with

fIN1 = 45 MHz, fIN2 = 46 MHz

SFDR dBFS

SFDR dBc

SNR dBc

INPUT AMPLITUDE (AIN)

100

–30

–10

–6.5

–15

–20

–25

SNR dBFS

Figure 25. AD9237-65 Two-Tone SNR/SFDR vs. Analog Input with

fIN1 = 69 MHz, fIN2 = 70 MHz

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