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AD7680 データシート(PDF) 9 Page - Analog Devices

部品番号 AD7680
部品情報  18-Bit, 2 MSPS PulSAR 15 mW ADC in LFCSP (QFN)
PDF  28 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

AD7680 データシート(HTML) 9 Page - Analog Devices

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AD7986
Rev. B | Page 9 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
AVDD = DVDD = VIO = 2.5 V, BVDD = 5.0 V, VREF = 5.0 V, external reference (PDREF = high, REFIN = low), unless otherwise noted.
0
65,536
131,072
196,608
262,144
–2.5
–2.0
–1.5
–1.0
–0.5
0
0.5
1.0
1.5
2.0
2.5
CODE
POSITIVE INL = +1.57LSB
NEGATIVE INL = –1.25LSB
Figure 5. Integral Nonlinearity vs. Code
0
101
1661
8250
35,204
41,811
34,894
7662
1418
68
3
0
0
5000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
45,000
3FF6
3FF8
3FFA
3FFC
3FFE
0
CODE IN HEX
Figure 6. Histogram of DC Input at Code Center (External Reference)
0
1
55
547
407 35
0
0
5000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
45,000
3FFEC
3FFEE
3FF0
3FF2
3FF4
3FF6
3FF8
CODE IN HEX
3662
12,773
31,020
39,395
29,138
2932
11,107
Figure 7. Histogram of DC Input at Code Center (Internal Reference)
0
65,536
131,072
196,608
262,144
–2.0
–1.5
–1.0
–0.5
0
0.5
1.0
1.5
2.0
CODE
POSITIVE DNL = +0.54LSB
NEGATIVE DNL = –0.60LSB
Figure 8. Differential Nonlinearity vs. Code
0
4
142
34
1
0
0
5000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
45,000
3FF5
3FF7
3FF9
3FFB
3FFD
3FFF
1
CODE IN HEX
10,211
38,665
41,434
30,897
2283
6399
1002
Figure 9. Histogram of DC Input at Code Transition (External Reference)
0
1
3 150
1282
6513
6879
1438
165 16
0
0
5000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
3FFEB 3FFED 3FFEF
3FF1
3FF3
3FF5
3FF7
3FF9
CODE IN HEX
18,953
22,077
37,385
36,210
Figure 10. Histogram of DC Input at Code Transition (Internal Reference)



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