AD9656EBZ datasheet(19/47 Pages) AD

19 / 47 page

AD9656

Data Sheet

Rev. A | Page 18 of 46

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100

120

–90

–70

–50

–30

–10

INPUT AMPLITUDE (dBFS)

SFDR (dBFS)

SNR (dBFS)

SFDR (dBc)

SNR (dB)

Figure 27. SNR/SFDR vs. Input Amplitude (AIN), fIN = 9.7 MHz,

fSAMPLE = 125 MSPS, VREF = 1.0 V

–140

–120

–100

–80

–60

–40

–20

FREQUENCY (MHz)

F2 – F1

AIN = –7dBFS

fIN1 = 70.5MHz

fIN2 = 72.5MHz

IMD2= –99dBc

IMD3 = –89dBc

SFDR = 89dBc

F1 + F2

F1 + 2F2

2F1 + F2

2F2 – F1

2F1 – F2

Figure 28. Two-Tone 32k FFT with fIN1 = 70.5 MHz and fIN2 = 72.5 MHz,

fSAMPLE = 125 MSPS, VREF = 1.0 V

–120

–100

–80

–60

–40

–20

–90

–80

–70

–60

–50

–40

–30

–20

–10

INPUT AMPLITUDE (dBFS)

–SFDR (dBc)

IMD3 (dBc)

–SFDR (dBFS)

IMD3 (dBFS)

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

fIN1 = 70.5 MHz and fIN2 = 72.5 MHz, fSAMPLE = 125 MSPS, VREF = 1.0 V

100

110

100

150

200

250

300

350

400

450

500

INPUT FREQUENCY (MHz)

SNR (dBFS)

SFDR (dBc)

Figure 30. SNR/SFDR vs. Input Frequency (fIN), fSAMPLE = 125 MSPS, VREF = 1.0 V

100

110

–40

–20

TEMPERATURE (°C)

SNR (dBFS)

SFDR (dBc)

Figure 31. SNR/SFDR vs. Temperature, fIN = 9.7 MHz,

fSAMPLE = 125 MSPS, VREF = 1.0 V

–6

–4

–2

10000

20000

30000

40000

50000

60000

OUTPUT CODE

Figure 32. Integral Nonlinearity (INL), fIN = 9.7 MHz, fSAMPLE = 125 MSPS,

VREF = 1.0 V

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