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AD7982 Datasheet(PDF) 10 Page - Analog Devices

Part No. AD7982
Description  18-Bit, 1 MSPS PulSAR 7 mW ADC in MSOP/LFCSP
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

AD7982 Datasheet(HTML) 10 Page - Analog Devices

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Data Sheet
AD7982
Rev. D | Page 9 of 25
TYPICAL PERFORMANCE CHARACTERISTICS
VDD = 2.5 V, VREF = 5.0 V, VIO = 3.3 V.
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
0
65536
131072
196608
262144
CODE
POSITIVE INL: +0.79 LSB
NEGATIVE INL: –0.68 LSB
Figure 6. INL vs. Code
60000
50000
40000
30000
20000
10000
0
3FFF0
3FFF2
3FFF4
3FFF6
3FFF8
3FFFA
3FFFC
CODE IN HEX
00
29
745
881
43
0
0
7795
29064
50975
32476
9064
Figure 7. Histogram of a DC Input at the Code Center
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
0
100
200
300
400
500
FREQUENCY (kHz)
fS = 1MSPS
fIN = 2kHz
SNR = 97.3dB
THD = –121.8dB
SFDR = 120.2dB
SINAD = 97.3dB
Figure 8. Fast Fourier Transform (FFT) Plot
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
0
65536
131072
196608
262144
CODE
Figure 9. DNL vs. Code
50000
45000
40000
35000
30000
25000
0
0
1
2
3
4
56
789
A
D
CODE IN HEX
00
7
145
70
0
20000
15000
10000
5000
222
C
B
16682
44806
43239
20013
3158
2793
Figure 10. Histogram of a DC Input at the Code Transition
100
99
98
97
96
95
94
93
92
91
90
–10
–9
–8–7
–6–5
–4–3
–2–1
0
INPUT LEVEL (dB)
Figure 11. SNR vs. Input Level


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