AD9258-80EBZ datasheet(21/45 Pages) AD

21 / 45 page

AD9258

Rev. A | Page 20 of 44

120

110

100

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

INPUT AMPLITUDE (dBFS)

SNRFS (DITHER ON)

SNRFS (DITHER OFF)

SFDRFS (DITHER ON)

SFDRFS (DITHER OFF)

Figure 26. AD9258-105 Single-Tone SNR/SFDR vs. Input Amplitude (AIN)

with fIN = 30 MHz with and without Dither Enabled

100

150

200

250

300

INPUT FREQUENCY (MHz)

SNR @ –40°C

SFDR @ –40°C

SNR @ +25°C

SFDR @ +25°C

SNR @ +85°C

SFDR @ +85°C

Figure 27. AD9258-105 Single-Tone SNR/SFDR vs. Input Frequency (fIN)

with 2 V p-p Full Scale

105

100

25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105

SAMPLE RATE (MSPS)

SNR, CHANNEL B

SFDR, CHANNEL B

SNR, CHANNEL A

SFDR, CHANNEL A

Figure 28. AD9258-105 Single-Tone SNR/SFDR vs. Sample Rate (fS)

with fIN = 70.1 MHz

700,000

600,000

500,000

400,000

300,000

200,000

100,000

N – 3

N – 2

N – 1

N + 1

N + 2

N + 3

OUTPUT CODE

Figure 29. AD9258-105 Grounded Input Histogram

–2

–1

DITHER ENABLED

DITHER DISABLED

2000

4000

6000

8000

10,000 12,000 14,000 16,000

OUTPUT CODE

Figure 30. AD9258-105 INL with fIN = 9.7 MHz

0.50

0.25

–0.25

–0.50

2000

4000

6000

8000

10,000 12,000 14,000 16,000

OUTPUT CODE

Figure 31. AD9258-105 DNL with fIN = 9.7 MHz

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