AD7944(Rev0) 查看數據表（PDF） - Analog Devices
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AD7944 Datasheet PDF : 28 Pages
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AD7944
TYPICAL PERFORMANCE CHARACTERISTICS
AVDD = DVDD = VIO = 2.5 V, BVDD = 5.0 V, VREF = 5.0 V, external reference (PDREF is high, REFIN is low), unless otherwise noted.
1.0
1.0
POSITIVE INL = +0.12 LSB
0.8
NEGATIVE INL = –0.20 LSB
0.8
POSITIVE DNL = +0.11LSB
NEGATIVE DNL = –0.11LSB
0.6
0.6
0.4
0.4
0.2
0.2
0
0
–0.2
–0.2
–0.4
–0.4
–0.6
–0.6
–0.8
–0.8
–1.0
0
4096
8192
CODE
12,288
Figure 5. Integral Nonlinearity vs. Code
16,384
–1.0
0
4096
8192
12,288
CODE
Figure 8. Differential Nonlinearity vs. Code
16,384
140,000
120,000
126,022
100,000
80,000
60,000
40,000
20,000
4899
0
0
2
0
149 0
0
0
8188 8189 8190 8191 8192 8193 8194 8195 8196
CODE IN HEX
Figure 6. Histogram of DC Input at Code Center (External Reference)
80,000
70,000
60,000
67,766
62,982
50,000
40,000
30,000
20,000
10,000
0
0
8188
0
8189
324
8190
8191 8192
CODE IN HEX
0
8193
0
8194
0
8195
Figure 9. Histogram of DC Input at Code Transition (External Reference)
140,000
120,000
124,396
100,000
80,000
60,000
40,000
20,000
0
0
8188
0
8189
2
8190
5236
1438
8191 8192 8193
CODE IN HEX
0
8194
0
8195
0
8196
Figure 7. Histogram of DC Input at Code Center (Internal Reference)
80,000
70,000
60,000
67,825
63,238
50,000
40,000
30,000
20,000
10,000
0
0
8189
0
8190
7
8191
8192 8193
CODE IN HEX
2
8194
0
8195
0
8196
Figure 10. Histogram of DC Input at Code Transition (Internal Reference)
Rev. 0 | Page 9 of 28
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