Analog Frequency Multiplier
PL660 and PL663 XO Families
EXTERNAL COMPONENT VALUES – 3RD OVERTONE RESISTOR SELECTIONS (R3rd)
This resistor is only required when a third overtone crystal is used. The chart below indicates the calculated and
the nearest “E12” resistor values versus frequency.
PL660-08/09
PL663-07/08/09
E12
Pick
PL663-017/18/19
E12
Pick
PL663-28/29
Freq. R3rd
E12
Pick
KΩ
E24
Pick
KΩ
Freq.
(MHz)
R3rd
(Ω)
Freq. R3rd
Freq. R3rd
(MHz)
(Ω)
(MHz)
(Ω)
(MHz)
(Ω)
KΩ
KΩ
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
62
64
66
68
70
72
74
76
12,396
11,442
10,625
9,917
9,297
8,750
8,264
7,829
7,438
7,083
6,761
6,467
6,198
5,950
5,721
5,509
5,313
5,129
4,958
4,798
4,648
4,508
4,375
4,250
4,132
4,020
3,914
12
12
10
10
10
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
62
64
66
68
70
72
74
76
78
80
9,917
9,297
8,750
8,264
7,829
7,438
7,083
6,761
6,467
6,198
5,950
5,721
5,509
5,313
5,129
4,958
4,798
4,648
4,508
4,375
4,250
4,132
4,020
3,914
3,814
3,719
10
10
75
77.5
80
82.5
85
87.5
90
92.5
95
97.5
100
102.5
105
107.5
110
112.5
115
117.5
120
122.5
125
127.5
130
132.5
135
2,125
2,056
1,992
1,932
1,875
1,821
1,771
1,723
1,678
1,635
1,594
1,555
1,518
1,483
1,449
1,417
1,386
1,356
1,328
1,301
1,275
1,250
1,226
1,203
1,181
1,159
1,138
2.2
2.2
2.2
1.8
1.8
1.8
1.8
1.8
1.8
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
140.0
142.0
144.0
146.0
148.0
150.0
152.0
154.0
156.0
158.0
160.0
162.0
164.0
166.0
168.0
170.0
172.0
174.0
176.0
178.0
180.0
182.0
184.0
186.0
188.0
190.0
192.0
194.0
196.0
198.0
200.0
915
902
890
878
866
854
843
832
821
811
801
790
780
770
759
749
740
730
720
711
701
692
683
674
665
656
647
639
630
622
614
0.91
0.91
0.91
0.91
0.91
0.82
0.82
0.82
0.82
0.82
0.82
0.82
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.68
0.68
0.68
0.68
0.68
0.68
0.68
0.62
0.62
0.62
0.62
0.62
8.2
8.2
8.2
6.8
6.8
6.8
6.8
6.8
5.6
5.6
5.6
5.6
4.7
4.7
4.7
4.7
4.7
4.7
3.9
3.9
3.9
3.9
3.9
3.9
8.2
8.2
8.2
6.8
6.8
6.8
6.8
6.8
5.6
5.6
5.6
5.6
4.7
4.7
4.7
4.7
4.7
4.7
3.9
3.9
3.9
3.9
137.5
140
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Rev. 3/20/07 Page 8