AD9268 Analog Devices, AD9268 Datasheet - Page 20

• Manufacturer Part Number: AD9268
• Description: 16-Bit, 125 MSPS/105 MSPS/80 MSPS, 1.8 V Dual Analog-to-Digital Converter
• Manufacturer: Analog Devices

Specifications of AD9268

• Resolution (bits): 16bit
• # Chan: 2
• Sample Rate: 125MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p,1 V p-p,2 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

AD9268
Figure 26. AD9268-105 Single-Tone SNR/SFDR vs. Input Amplitude (A
Figure 27. AD9268-105 Single-Tone SNR/SFDR vs. Input Frequency (f
Figure 28. AD9268-105 Single-Tone SNR/SFDR vs. Sample Rate (f
100
105
100
120
110
100
95
90
85
80
75
70
65
95
90
85
80
75
90
80
70
–100 –90
25
0
with f
30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105
SNR, CHANNEL B
SFDR, CHANNEL B
SNR, CHANNEL A
SFDR, CHANNEL A
SNRFS (DITHER ON)
SNRFS (DITHER OFF)
SFDRFS (DITHER ON)
SFDRFS (DITHER OFF)
IN
50
= 30 MHz with and without Dither Enabled
–80
–70
with 2 V p-p Full Scale
INPUT FREQUENCY (MHz)
INPUT AMPLITUDE (dBFS)
100
with f
SAMPLE RATE (MSPS)
–60
IN
= 70.1 MHz
150
–50
–40
200
–30
SNR @ –40°C
SFDR @ –40°C
SNR @ +25°C
SFDR @ +25°C
SNR @ +85°C
SFDR @ +85°C
–20
250
–10
300
0
S
)
IN
IN
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)
)
250,000
200,000
150,000
100,000
50,000
–0.25
–0.50
–0.75
–1.00
1.00
0.75
0.50
0.25
–2
–4
–6
6
4
2
0
0
0
0
0
Figure 29. AD9268-105 Grounded Input Histogram
Figure 31. AD9268-105 DNL with f
Figure 30. AD9268-105 INL with f
10,000
10,000
20,000
20,000
OUTPUT CODE
OUTPUT CODE
30,000
OUTPUT CODE
30,000
40,000
40,000
DITHER ENABLED
DITHER DISABLED
IN
IN
= 9.7 MHz
= 9.7 MHz
50,000
50,000
2.23 LSB rms
60,000
60,000