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AD9255 датащи(PDF) 21 Page - Analog Devices

номер детали AD9255
подробное описание детали  1.8 V Analog-to-Digital Converter
PDF  45 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

AD9255 датащи(HTML) 21 Page - Analog Devices

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AD9255
Data Sheet
Rev. C | Page 20 of 44
0
–20
–40
–60
–80
–100
–120
–140
0
102030
60
50
40
FREQUENCY (MHz)
SECOND
HARMONIC
THIRD
HARMONIC
125MSPS
70.1MHz @ –6dBFS
SNR = 72.6dB (78.6dBFS)
SFDR = 99.7dBc
Figure 36. AD9255-125 Single-Tone FFT with fIN = 70.1 MHz at −6 dBFS with
Dither Enabled
0
–135
–120
–105
–90
–75
–60
–45
–30
–15
60
54
48
42
36
30
24
18
12
6
FREQUENCY (MHz)
+
2
5
3
4
6
125MSPS
70.1MHz @ –23dBFS
SNR = 56.4dBc (79.4dBFS)
SFDR = 75.8dBc
Figure 37. AD9255-125 Single-Tone FFT with fIN = 70.1 MHz at −23 dBFS with
Dither Disabled, 1M Sample
0
–135
–120
–105
–90
–75
–60
–45
–30
–15
60
54
48
42
36
30
24
18
12
6
FREQUENCY (MHz)
+
2
5
3
4
6
125MSPS
70.1MHz @ –23dBFS
SNR = 55.9dBc (78.9dBFS)
SFDR = 86.6dBc
Figure 38. AD9255-125 Single-Tone FFT with fIN = 70.1 MHz at −23 dBFS with
Dither Enabled, 1M Sample
120
100
80
60
40
20
0
–100
–80
–90
–70
–60
–50
–40
–30
–20
–10
0
INPUT AMPLITUDE (dBFS)
SNR (dBFS)
SFDR (dBc)
SNR (dBc)
SFDR (dBFS)
Figure 39. AD9255-125 Single-Tone SNR/SFDR vs. Input Amplitude (AIN) with
fIN = 2.4 MHz
120
100
80
60
40
20
0
–100
–80
–90
–70
–60
–50
–40
–30
–20
–10
0
INPUT AMPLITUDE (dBFS)
SNR (dBFS)
SFDR (dBc)
SNR (dBc)
SFDR (dBFS)
Figure 40. AD9255-125 Single-Tone SNR/SFDR vs. Input Amplitude (AIN) with
fIN = 98.12 MHz
120
110
100
90
80
70
–100
–80
–90
–70
–60
–50
–40
–30
–20
–10
0
INPUT AMPLITUDE (dBFS)
SFDRFS (DITHER ON)
SFDRFS (DITHER OFF)
SNRFS (DITHER ON)
SNRFS (DITHER OFF)
Figure 41. AD9255-125 Single-Tone SNR/SFDR vs. Input Amplitude (AIN) with
fIN = 30 MHz With and Without Dither Enabled



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