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AD9268 数据表(PDF) 19 Page - Analog Devices

部件名 AD9268
功能描述  1.8 V Dual Analog-to-Digital Converter (ADC)
PDF  45 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD9268 数据表(HTML) 19 Page - Analog Devices

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



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