EVAL-AD7985EBZ(Rev0) 查看數據表（PDF） - Analog Devices
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EVAL-AD7985EBZ Datasheet PDF : 28 Pages
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AD7985
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.
1.25
1.00
0.75
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
–1.25
0
POSITIVE INL = +0.38LSB
NEGATIVE INL = –0.46LSB
16,384
32,768
CODE
49,152
Figure 5. Integral Nonlinearity vs. Code
65,536
1.00
0.75
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
0
POSITIVE DNL = +0.19LSB
NEGATIVE DNL = –0.20LSB
16,384
32,768
CODE
49,152
Figure 8. Differential Nonlinearity vs. Code
65,536
60,000
50,000
57,138
40,000
38,843
30,000
20,000
26,249
10,000
6150
0
122
0
7FFC 7FFD 7FFE 7FFF
8000
8001
2537
8002
33
8003
0
8004
CODE IN HEX
Figure 6. Histogram of DC Input at Code Center (External Reference)
60,000
50,000
53,522
48,730
40,000
30,000
20,000
10,000
11,888
15,645
0
2 479
800
6
0
0
7FFB 7FFC 7FFD 7FFE 7FFF 8000 8001 8002 8003 8004
CODE IN HEX
Figure 9. Histogram of DC Input at Code Transition (External Reference)
60,000
50,000
49,585
40,000
30,000
33,064
31,957
20,000
10,000
8455
7024
0 11 565
403 8
0
0
7FFB 7FFC 7FFD 7FFE 7FFF 8000 8001 8002 8003 8004 8005
CODE IN HEX
Figure 7. Histogram of DC Input at Code Center (Internal Reference)
50,000
45,000
46,649
43,622
40,000
35,000
30,000
25,000
20,000
15,000
20,474
15,598
10,000
5000
0
2947
0
90
7FFC 7FFD 7FFE 7FFF
8000
8001
8002
1662
8003
30
8004
0
8005
CODE IN HEX
Figure 10. Histogram of DC Input at Code Transition (Internal Reference)
Rev. 0 | Page 9 of 28
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