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AD7984 データシート(PDF) 8 Page - Analog Devices

部品番号 AD7984
部品情報  18-Bit, 1.33 MSPS PulSAR 10.5 mW ADC in MSOP/QFN
PDF  24 Pages
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メーカー  AD [Analog Devices]
ホームページ  http://www.analog.com
Logo AD - Analog Devices

AD7984 データシート(HTML) 8 Page - Analog Devices

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AD7984
Rev. 0 | Page 8 of 24
TYPICAL PERFORMANCE CHARACTERISTICS
VDD = 2.5 V, REF = 5.0 V, VIO = 3.3 V.
2.0
–2.0
0
262144
CODE
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
65536
131072
196608
POSITIVE INL: +1.07LSB
NEGATIVE INL: –0.73LSB
Figure 6. Integral Nonlinearity vs. Code
60k
0
1C
CODE IN HEX
50k
40k
30k
20k
10k
1D 1E
0
07
600
1F
326
20
21
22
23
24
25
326
26
27
28
5992
32350
55354
31003
5708
Figure 7. Histogram of a DC Input at the Code Center
0
–180
0
FREQUENCY (kHz)
–20
–40
–60
–80
–100
–120
–140
–160
100
200
300
400
500
600
fS = 1.33MSPS
fIN = 10kHz
SNR = 98.2dB
THD = –110.6dB
SFDR = 112.5dB
SINAD = 98.0dB
Figure 8. FFT Plot
2.0
–2.0
0
262144
CODE
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
65536
131072
196608
POSITIVE DNL: +0.63LSB
NEGATIVE DNL: –0.34LSB
Figure 9. Differential Nonlinearity vs. Code
60k
0
1D
CODE IN HEX
50k
40k
30k
20k
10k
1E
1F
00
2
20
69
21
22
23
24
25
26
27
37
28
29
00
1801
1378
16593
14653
48273
48266
Figure 10. Histogram of a DC Input at the Code Transition
100
90
–10
0
INPUT LEVEL (dB of Full Scale)
99
98
97
96
95
94
93
92
91
–9
–8
–7
–6
–5
–4
–3
–2
–1
Figure 11. SNR vs. Input Level



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