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AD7651 Datasheet(PDF) 13 Page - Analog Devices

Part # AD7651
Description  16-Bit 100 kSPS PulSAR Unipolar ADC with Reference
PDF  29 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7651 Datasheet(HTML) 13 Page - Analog Devices

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AD7651
Rev. 0 | Page 12 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
CODE
0
–4
–3
–1
–2
0
3
2
1
4
16384
32768
65536
49152
02964-0-026
Figure 5. Integral Nonlinearity vs. Code
CODE IN HEX
7FFB
0
20000
60000
40000
80000
140000
120000
8000 8001
8003
8002
02964-0-027
8004
7FFC 7FFD 7FFE 7FFF
100000
10822
00
0
0
137
479
20890
114686
114156
Figure 6. Histogram of 261,120 Conversions of a
DC Input at the Code Transition
FREQUENCY (kHz)
0
–180
–160
–120
–140
–100
–60
–80
0
20
30
50
40
02964-0-029
10
–40
–20
fS = 100kSPS
fIN = 45.7kHz
SNR = 86.7dB
THD = 102.5dB
SFDR = 103.6dB
S/[N+D] = 86.6dB
Figure 7. FFT Plot
CODE
0
–1.0
–0.5
0
1.5
1.0
0.5
2.0
16384
32768
65536
49152
02964-0-023
Figure 8. Differential Nonlinearity vs. Code
CODE IN HEX
0
20000
80000
40000
100000
180000
120000
8000
8001
8003
8002
02964-0-028
8004
7FFC 7FFD 7FFE 7FFF
019
2896
1903
50
60000
155528
49184
51585
140000
160000
Figure 9. Histogram of 261,120 Conversions of a
DC Input at the Code Center
FREQUENCY (kHz)
1
80
85
87
86
88
90
100
02964-0-030
1000
10
89
15.5
13.0
13.5
14.0
14.5
15.0
ENOB
SNR
S/[N+D]
81
83
82
84
Figure 10. SNR, S/(N+D), and ENOB vs. Frequency



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