AD9608 datasheet(19/41 Pages) AD

19 / 41 page

AD9608

Data Sheet

Rev. C | Page 18 of 40

AVDD = 1.8 V, DRVDD = 1.8 V, maximum sample rate, VIN = −1.0 dBFS differential input, 1.0 V internal reference, and DCS enabled, unless

otherwise noted.

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FREQUENCY (MHz)

2F1 – F2

2F2 – F1

2F1 + F2

Figure 14. Two-Tone FFT with fIN1 = 29 MHz and fIN2 = 32 MHz

100

150

200

250

ANALOG INPUT FREQUENCY (MHz)

SNRFS

SFDR

Figure 15. SNR/SFDR vs. Input Frequency (AIN) with 2 V p-p Full Scale

100

120

105

125

SAMPLE RATE (MSPS)

SFDR (dBc)

SNR (dBFS)

Figure 16. SNR/SFDR vs. Sample Rate with AIN = 9.7 MHz

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INPUT AMPLITUDE (dBFS)

IMD3 (dBc)

SFDR(dBc)

SFDR(dBFS)

IMD3 (dBFS)

Figure 17. Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN) with fIN1 = 29 MHz

and fIN2 = 32 MHz

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INPUT AMPLITUDE (dBFS)

SNRFS

SFDR

SNR

SFDRFS

Figure 18. SNR/SFDR vs. Input Amplitude (AIN) with fIN = 9.7 MHz

100

120

105

125

SAMPLE RATE (MSPS)

SFDR (dBc)

SNR (dBFS)

Figure 19. SNR/SFDR vs. Sample Rate with AIN = 70 MHz

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