AD9254 datasheet(12/41 Pages) AD

12 / 41 page

AD9254

Rev. 0 | Page 11 of 40

–120

–100

–80

–60

–40

–20

18.75

37.50

56.25

75.00

FREQUENCY (MHz)

150MSPS

250.3MHz @ –1dBFS

SNR = 69.3dBc (70.3dBFS)

ENOB = 11.3 BITS

SFDR = 79dBc

Figure 18. AD9254 Single-Tone FFT with fIN = 250.3 MHz

–120

–100

–80

–60

–40

–20

18.75

37.50

56.25

75.00

FREQUENCY (MHz)

150MSPS

fIN1 = 29.1MHz @ –7dBFS

fIN2 = 32.1MHz @ –7dBFS

SFDR = 83.2dBc (90.2dBFS)

WoIMD3 = –83.9dBc (–90.9dBFS)

Figure 19. AD9254 Two-Tone FFT with fIN1 = 29.1 MHz, fIN2 = 32.1 MHz

350

300

250

200

150

100

INPUT FREQUENCY (MHz)

SNR +25°C

SNR –40°C

SNR +85°C

SFDR +25°C

SFDR –40°C

SFDR +85°C

Figure 20. AD9254 Single-Tone SNR/SFDR vs. Input Frequency (fIN) and

Temperature with 2 V p-p Full Scale

120

100

–90

–20

–10

–30

–40

–50

–60

–70

–80

INPUT AMPLITUDE (dBFS)

SNR (dBc)

85dBc

REFERENCE LINE

SFDR (dBFS)

SFDR (dBc)

SNR (dBFS)

Figure 21. AD9254 Single-Tone SNR/SFDR vs. Input Amplitude (AIN)

with fIN = 2.4 MHz

–20

–40

–60

–80

–100

–120

–90

–78

–66

–54

–42

–30

–18

–6

INPUT AMPLITUDE (dBFS)

SFDR (–dBc)

SFDR (–dBFS)

WORST IMD3 (dBc)

WORST IMD3 (dBFS)

Figure 22. AD9254 Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN)

with fIN1 = 29.1 MHz, fIN2 = 32.1 MHz

350

300

250

200

150

100

INPUT FREQUENCY (MHz)

SNR +25°C

SNR –40°C

SNR +85°C

SFDR +25°C

SFDR –40°C

SFDR +85°C

Figure 23. AD9254 Single-Tone SNR/SFDR vs. Input Frequency (fIN) and

Temperature with 1 V p-p Full Scale

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