AD6674 datasheet(55/91 Pages) AD

55 / 91 page

Data Sheet

AD6674

Figure 113 to Figure 115 show the typical spectrum that can be

expected from the AD6674 in the 28% BW mode for three

different tuning words.

–140

–20

–40

–60

–80

–100

–120

175

150

125

100

FREQUENCY (MHz)

AIN = −1dBFS

SNR = 73.0dBFS

ENOB = 11.3 BITS

SFDR = 93dBFS

BUFFER CONTROL 1 = 1.5×

Figure 113. AD6674-750, fCLOCK = 750 MHz, fS = 375 MSPS, fIN = 10.3 MHz,

28% BW Mode, Tuning Word = 0

–140

–20

–40

–60

–80

–100

–120

175

150

125

100

FREQUENCY (MHz)

AIN = −1dBFS

SNR = 72.4dBFS

ENOB = 11.2 BITS

SFDR = 96dBFS

BUFFER CONTROL 1 = 1.5×

Figure 114. AD6674-750, fCLOCK = 750 MHz, fS = 375 MSPS, fIN = 90.3 MHz,

28% BW Mode, Tuning Word = 19 (fS/4 Tuning)

–140

–20

–40

–60

–80

–100

–120

175

150

125

100

FREQUENCY (MHz)

AIN = −1dBFS

SNR = 72.5dBFS

ENOB = 11.3 BITS

SFDR = 94dBFS

BUFFER CONTROL 1 = 1.5×

Figure 115. AD6674-750, fCLOCK = 750 MHz, fS = 375 MSPS, fIN = 140.3 MHz,

28% BW Mode, Tuning Word = 43

Rev. B | Page 55 of 91

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