AD9268
200,000
180,000
160,000
140,000
120,000
100,000
80,000
120
110
100
90
2.17 LSB rms
SNRFS (DITHER ON)
SNRFS (DITHER OFF)
SFDRFS (DITHER ON)
SFDRFS (DITHER OFF)
60,000
40,000
80
20,000
0
70
–100 –90 –80 –70 –60 –50 –40 –30 –20 –10
0
INPUT AMPLITUDE (dBFS)
OUTPUT CODE
Figure 14. AD9268-80 Single-Tone SNR/SFDR vs. Input Amplitude (AIN) with
fIN = 30 MHz with and without Dither Enabled
Figure 17. AD9268-80 Grounded Input Histogram
100
4
2
SNR @ –40°C
SFDR @ –40°C
SNR @ +25°C
SFDR @ +25°C
SNR @ +85°C
SFDR @ +85°C
DITHER ENABLED
DITHER DISABLED
95
90
85
80
75
70
65
0
–2
–4
0
0
50
100
150
200
250
300
10,000
20,000
30,000 40,000
OUTPUT CODE
50,000
60,000
INPUT FREQUENCY (MHz)
Figure 15. AD9268-80 Single-Tone SNR/SFDR vs. Input Frequency (fIN
)
Figure 18. AD9268-80 INL with fIN = 9.7 MHz
with 2 V p-p Full Scale
1.00
105
SNR, CHANNEL B
SFDR, CHANNEL B
SNR, CHANNEL A
SFDR, CHANNEL A
0.75
0.50
100
95
0.25
0
90
–0.25
–0.50
85
80
75
–0.75
–1.00
0
10,000
20,000
30,000 40,000
OUTPUT CODE
50,000
60,000
25
30
35
40
45
50
55
60
65
70
75
80
SAMPLE RATE (MSPS)
Figure 19. AD9268-80 DNL with fIN = 9.7 MHz
Figure 16. AD9268-80 Single-Tone SNR/SFDR vs. Sample Rate (fS)
with fIN = 70.1 MHz
Rev. A | Page 18 of 44
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