AD9255 datasheet(19/45 Pages) AD

19 / 45 page

AD9255

Data Sheet

Rev. C | Page 18 of 44

120

110

100

–100

–80

–90

–70

–60

–50

–40

–30

–20

–10

INPUT AMPLITUDE (dBFS)

SFDRFS (DITHER ON)

SFDRFS (DITHER OFF)

SNRFS (DITHER ON)

SNRFS (DITHER OFF)

Figure 24. AD9255-105 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

SNR @ +25°C

SNR @ +85°C

SFDR @ –40°C

SFDR @ +25°C

SFDR @ +85°C

Figure 25. AD9255-105 Single-Tone SNR/SFDR vs.

Input Frequency (fIN) and Temperature with 2 V p-p Full Scale

105

100

105

100

SAMPLE RATE (MSPS)

SFDR

SNR

Figure 26. AD9255-105 Single-Tone SNR/SFDR vs. Sample Rate (fS)

with fIN = 70.1 MHz

1.4M

1.2M

1.0M

800k

600k

400k

200k

OUTPUT CODE

N – 3

N – 2

N – 1

N + 1

N + 2

N + 3

0.63 LSB RMS

Figure 27. AD9255-105 Grounded Input Histogram

1.0

–1.0

–0.8

–0.6

–0.4

–0.2

0.2

0.4

0.6

0.8

16,000

14,000

12,000

10,000

8000

6000

4000

2000

OUTPUT CODE

INL WITHOUT DITHER

INL WITH DITHER

Figure 28. AD9255-105 INL with fIN = 12.5 MHz

0.50

–0.50

–0.25

0.25

16,000

14,000

12,000

10,000

8000

6000

4000

2000

OUTPUT CODE

Figure 29. AD9255-105 DNL with fIN = 12.5 MHz

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