AD6649EBZ datasheet(14/40 Pages) AD

14 / 40 page

AD6649

Rev. 0 | Page 14 of 40

100

120

INPUT AMPLITUDE (dBFS)

SNR (dBFS)

SFDR (dBc)

SNR (dBc)

SFDR (dBFS)

Figure 11. AD6649 Single-Tone SNR/SFDR vs. Input Amplitude (AIN)

with fIN = 90.1 MHz

100

150

200

250

300

350

400

450

INPUT FREQUENCY (MHz)

SNR (dBFS)

SFDR (dBc)

Figure 12. AD6649 Single-Tone SNR/SFDR vs. Input Frequency (fIN)

–120

–100

–80

–60

–40

–20

–90.0

–78.5

–67.0

–55.5

–44.0

–32.5

–21.0

–9.5

INPUT AMPLITUDE (dBFS)

SFDR (dBc)

SFDR (dBFS)

IMD3 (dBc)

IMD3 (dBFS)

Figure 13. AD6649 Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN)

with fIN1 = 89.12 MHz, fIN2 = 92.12 MHz, fS = 250 MSPS

–120

–100

–80

–60

–40

–20

–90.0

–78.5

–67.0

–55.5

–44.0

–32.5

–21.0

–9.5

INPUT AMPLITUDE (dBFS)

SFDR (dBc)

SFDR (dBFS)

IMD3 (dBc)

IMD3 (dBFS)

Figure 14. AD6649 Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN)

with fIN1 = 184.12 MHz, fIN2 = 187.12 MHz, fS = 250 MSPS

–20

–40

–60

–80

–100

–120

–140

010

FREQUENCY (MHz)

90 100 110 120

250MSPS

89.12MHz @ –7.0dBFS

92.12MHz @ –7.0dBFS

SFDR = 88dBc (96.5dBFS)

Figure 15. AD6649 Two-Tone FFT with fIN1 = 89.12 MHz, fIN2 = 92.12 MHz,

fS = 250 MSPS

–20

–40

–60

–80

–100

–120

–140

250MSPS

184.12MHz @ –7.0dBFS

187.12MHz @ –7.0dBFS

SFDR = 85dBc (93.5dBFS)

010

FREQUENCY (MHz)

90 100 110 120

Figure 16. AD6649 Two-Tone FFT with fIN1 = 184.12 MHz,

fIN2 = 187.12 MHz, fS = 250 MSPS

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