AD9853 Analog Devices, AD9853 Datasheet - Page 24

• Manufacturer Part Number: AD9853
• Description: Programmable Digital OPSK/16-QAM Modulator
• Manufacturer: Analog Devices

AD9853
Rate
Change
Factor
(R)
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Nominal
Scale
Value
(R-1)
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Table IV. Interpolator #1
Nominal
Gain
1.688
1.000
1.953
1.688
1.340
1.000
1.424
1.953
1.300
1.688
1.073
1.340
1.648
1.000
1.199
1.424
1.675
1.953
1.130
1.300
1.485
1.688
1.907
1.073
1.201
1.340
1.489
1.648
1.818
Alternate
Scale
Value
03
05
05
06
07
10
10
10
12
12
15
15
15
20
20
20
20
20
25
25
25
25
25
31
31
31
31
31
31
Resulting
Gain
0.844
0.500
0.977
0.844
0.670
0.500
0.712
0.977
0.650
0.844
0.536
0.670
0.824
0.500
0.600
0.712
0.837
0.977
0.565
0.650
0.743
0.844
0.954
0.536
0.601
0.670
0.744
0.824
0.909
–24–
Rate
Change
Factor
(R)
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
Nominal
Scale
Value
(R-1)
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
Table V. Interpolator #2
Nominal
Gain
1.000
1.125
1.000
1.563
1.125
1.531
1.000
1.266
1.563
1.891
1.125
1.320
1.531
1.758
1.000
1.129
1.266
1.410
1.563
1.723
1.891
1.033
1.125
1.221
1.320
1.424
1.531
1.643
1.758
1.877
1.000
1.063
1.129
1.196
1.266
1.337
1.410
1.485
1.563
1.642
1.723
1.806
1.891
1.978
1.033
1.079
1.125
1.172
1.221
1.270
1.320
1.372
1.424
1.477
1.531
1.586
1.643
1.700
1.758
1.817
1.877
1.938
Alternate
Scale
Value
02
03
05
05
07
07
11
11
11
11
15
15
15
15
22
22
22
22
22
22
22
31
31
31
31
31
31
31
31
31
45
45
45
45
45
45
45
45
45
45
45
45
45
45
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
Resulting
Gain
0.500
0.563
0.500
0.781
0.563
0.766
0.500
0.633
0.781
0.945
0.563
0.660
0.766
0.879
0.500
0.564
0.633
0.705
0.781
0.861
0.945
0.517
0.563
0.610
0.660
0.712
0.766
0.821
0.879
0.938
0.500
0.532
0.564
0.598
0.633
0.668
0.705
0.743
0.781
0.821
0.861
0.903
0.945
0.989
0.517
0.539
0.563
0.586
0.610
0.635
0.660
0.686
0.712
0.739
0.766
0.793
0.821
0.850
0.879
0.908
0.938
0.969
REV. C