AD6674 datasheet(21/97 Pages) AD

21 / 97 page

AD6674

Data Sheet

Rev. C | Page 20 of 96

FREQUENCY (MHz)

–140

–120

–100

–80

–60

–40

–20

0375

300

225

150

350

275

200

125

325

250

175

100

AIN1 AND AIN2 = −7dBFS

SFDR = 81dBFS

IMD2 = 86dBc

IMD3 = 81dBc

BUFFER CONTROL 1 = 3.0×

Figure 37. Two-Tone FFT; fIN1 = 184 MHz, fIN2 = 187 MHz

FREQUENCY (MHz)

–140

–120

–100

–80

–60

–40

–20

0375

300

225

150

350

275

200

125

325

250

175

100

AIN1 AND AIN2 = −7dBFS

SFDR = 83dBFS

IMD2 = 89dBc

IMD3 = 83dBc

BUFFER CONTROL 1 = 4.5×

Figure 38. Two-Tone FFT; fIN1 = 338 MHz, fIN2 = 341 MHz

INPUT AMPLITUDE (dBFS)

–120

–100

–80

–60

–40

–20

–90 –84 –78 –72 –66 –60 –54 –48 –42 –36 –30 –24 –18 –12 –6

SFDR (dBFS)

IMD3 (dBFS)

SFDR (dBc)

IMD3 (dBc)

Figure 39. Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN)

with fIN1 = 184 MHz and fIN2 = 187 MHz

–120

–100

–80

–60

–40

–20

SFDR (dBc)

IMD3 (dBc)

SFDR (dBFS)

IMD3 (dBFS)

INPUT AMPLITUDE (dBFS)

–90 –84 –78 –72 –66 –60 –54 –48 –42 –36 –30 –24 –18 –12 –6

Figure 40. Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN)

with fIN1 = 338 MHz and fIN2 = 341 MHz

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