AD9244 datasheet(13/37 Pages) AD

13 / 37 page

AD9244

Rev. C | Page 12 of 36

TYPICAL PERFORMANCE CHARACTERISTICS

AVDD = 5.0 V, DRVDD = 3.0 V, fSAMPLE = 65 MSPS with CLK duty cycle stabilizer enabled, TA = 25°C, differential analog input, common-

mode voltage (VCM) = 2.5 V, input amplitude (AIN) = −0.5 dBFS, VREF = 2.0 V external, FFT length = 8K, unless otherwise noted.

FREQUENCY (MHz)

32.5

010

152025

–20

–40

–60

–80

–120

–100

SNR = 74.8dBc

SFDR = 93.6dBc

Figure 10. Single-Tone FFT, fIN = 5 MHz

FREQUENCY (MHz)

32.5

10.0

5.0

15.0

20.0

25.0

30.0

–20

–40

–60

–80

–100

–120

SNR = 74.0dBc

SFDR = 87.0dBc

Figure 11. Single-Tone FFT, fIN = 31 MHz

FREQUENCY (MHz)

–20

–40

–60

–100

–80

–120

SNR = 66.5dBc

SFDR = 74.0dBc

Figure 12. Single-Tone FFT, fIN = 190 MHz, fSAMPLE = 61.44 MSPS

AIN (dBFS)

–30

–25

–20

–15

–10

–5

100

SFDR (dBFS)

SNR (dBFS)

SNR (dBc)

SFDR = 90dBc

REFERENCE LINE

SFDR (dBc)

Figure 13. Single-Tone SNR/SFDR vs. AIN, fIN = 5 MHz

AIN (dBFS)

–25

–20

–15

–10

–5

100

SFDR (dBFS)

SNR (dBFS)

SFDR (dBc)

SNR (dBc)

SFDR = 90dBc

REFERENCE LINE

Figure 14. Single-Tone SNR/SFDR vs. AIN, fIN = 31 MHz

AIN (dBFS)

–30

–25

–20

–15

–10

–5

100

SNR (dBFS)

SFDR (dBc)

SNR (dBc)

SFDR (dBFS)

SFDR = 90dBc

REFERENCE LINE

Figure 15. Single-Tone SNR/SFDR vs. AIN, fIN = 190 MHz, fSAMPLE = 61.44 MSPS

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