AD9645 datasheet(16/36 Pages) AD

16 / 36 page

AD9645

Data Sheet

Rev. 0 | Page 16 of 36

120

–20

–90

INPUT AMPLITUDE (dBFS)

SFDRFS

SFDR

SNRFS

SNR

100

–80

–70

–60

–50

–40

–30

–20

–10

Figure 32. SNR/SFDR vs. Analog Input Level; fIN = 9.7 MHz, fSAMPLE = 125 MSPS

–140

–120

–100

–80

–60

–40

–20

FREQUENCY (MHz)

AIN1 AND AIN2 = –7dBFS

SFDR = 89.6dBc

IMD2 = –96.4dBc

IMD3 = –90.8dBc

Figure 33. Two-Tone 16k FFT with fIN1 = 70.5 MHz and fIN2 = 72.5 MHz,

fSAMPLE = 125 MSPS

–20

–40

–60

–80

–100

–120

–90

–10

–30

–50

–70

INPUT AMPLITUDE (dBFS)

SFDR (dBc)

SFDR (dBFS)

IMD3 (dBc)

IMD3 (dBFS)

Figure 34. Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN) with

fIN1 = 70.5 MHz and fIN2 = 72.5 MHz, fSAMPLE = 125 MSPS

110

260

INPUT FREQUENCY (MHz)

100

100 120 140

240

160 180 200 220

SFDR

SNR

Figure 35. SNR/SFDR vs. fIN; fSAMPLE = 125 MSPS

120

–40

–20

TEMPERATURE (°C)

100

110

SNR

SFDR

Figure 36. SNR/SFDR vs. Temperature; fIN = 9.7 MHz, fSAMPLE = 125 MSPS

1.5

–1.5

OUTPUT CODE

–1.0

–0.5

0.5

1.0

Figure 37. INL; fIN = 9.7 MHz, fSAMPLE = 125 MSPS

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