AD8555_15 Datasheet, PDF (18/28 Pages) Analog Devices – Zero-Drift, Digitally Programmable

AD8555
GAIN VALUES
Table 6. First Stage Gain vs. Gain Code
First Stage
First Stage
Gain Code First Stage Gain Gain Code
0
4.000
32
1
4.015
33
2
4.030
34
3
4.045
35
4
4.060
36
5
4.075
37
6
4.090
38
7
4.105
39
8
4.120
40
9
4.135
41
10
4.151
42
11
4.166
43
12
4.182
44
13
4.197
45
14
4.213
46
15
4.228
47
16
4.244
48
17
4.260
49
18
4.276
50
19
4.291
51
20
4.307
52
21
4.323
53
22
4.339
54
23
4.355
55
24
4.372
56
25
4.388
57
26
4.404
58
27
4.420
59
28
4.437
60
29
4.453
61
30
4.470
62
31
4.486
63
First Stage Gain
4.503
4.520
4.536
4.553
4.570
4.587
4.604
4.621
4.638
4.655
4.673
4.690
4.707
4.725
4.742
4.760
4.778
4.795
4.813
4.831
4.849
4.867
4.885
4.903
4.921
4.939
4.958
4.976
4.995
5.013
5.032
5.050
First Stage
Gain Code
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
First Stage Gain
5.069
5.088
5.107
5.126
5.145
5.164
5.183
5.202
5.221
5.241
5.260
5.280
5.299
5.319
5.339
5.358
5.378
5.398
5.418
5.438
5.458
5.479
5.499
5.519
5.540
5.560
5.581
5.602
5.622
5.643
5.664
5.685
First Stage
Gain Code
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
First Stage Gain
5.706
5.727
5.749
5.770
5.791
5.813
5.834
5.856
5.878
5.900
5.921
5.943
5.965
5.988
6.010
6.032
6.054
6.077
6.099
6.122
6.145
6.167
6.190
6.213
6.236
6.259
6.283
6.306
6.329
6.353
6.376
6.400
GAIN1
≈
4
×
⎜⎝⎛
6.4
4
⎟⎠⎞
⎜⎛
⎝
Code
127
⎟⎞
⎠
Table 7. Second Stage Gain and Gain Ranges vs. Gain Code
(3)
Second
Second
Minimum
Maximum
Stage Gain Stage
Combined
Combined
Code
Gain
Gain
Gain
0
17.5
70
112
1
25
100
160
2
35
140
224
3
50
200
320
4
70
280
448
5
100
400
640
6
140
560
896
7
200
800
1280
Rev. A | Page 18 of 28