AD6674 datasheet(17/97 Pages) AD

17 / 97 page

AD6674

Data Sheet

Rev. C | Page 16 of 96

FREQUENCY (MHz)

–120

–100

–80

–60

–40

–20

0500

400

300

200

100

AIN1 AND AIN2 = –7dBFS

SFDR = 87dBFS

IMD2 = 93dBFS

IMD3 = 87dBFS

BUFFER CONTROL 1 = 3.0×

Figure 18. Two-Tone FFT; fIN1 = 184 MHz, fIN2 = 187 MHz

FREQUENCY (MHz)

–120

–100

–80

–60

–40

–20

0500

400

300

200

100

AIN1 AND AIN2 = –7dBFS

SFDR = 88dBFS

IMD2 = 93dBFS

IMD3 = 88dBFS

BUFFER CONTROL 1 = 4.5×

Figure 19. Two-Tone FFT; fIN1 = 338 MHz, fIN2 = 341 MHz

–84

–90

–78 –72 –66 –60 –54 –48 –42 –36 –30 –24 –18 –12 –6

INPUT AMPLITUDE (dBFS)

–140

–120

–100

–80

–60

–40

–20

IMD3 (dBFS)

SFDR (dBFS)

SFDR (dBc)

IMD3 (dBc)

Figure 20. Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN)

with fIN1 = 184 MHz and fIN2 = 187 MHz

–84

–90

–78 –72 –66 –60 –54 –48 –42 –36 –30 –24 –18 –12 –6

INPUT AMPLITUDE (dBFS)

–140

–120

–100

–80

–60

–40

–20

SFDR (dBc)

SFDR (dBFS)

IMD3 (dBc)

IMD3 (dBFS)

Figure 21. Two-Tone IMD3/SFDR vs. Input Amplitude (AIN) with fIN1 = 338 MHz

and fIN2 = 341 MHz

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