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CMX994 Datasheet, PDF (12/61 Pages) CML Microcircuits – Local Oscillator | |||
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Direct Conversion Receivers
CMX994/CMX994A/CMX994E
Freq (MHz)
50
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1000
Impedance
(Ω-/+jΩ)
355 â j291
210 â j267
128 â j222
92 â j186
70 â j157
56 â j134
45 â j117
38 â j103
34.1 â j91
30.5 â j82
26.4 â j73
24.0 â j66
21.7 â j59
19.9 â j53
18.7 â j47.7
17.5 â j42.8
16.5 â j38.3
15.4 â j34.4
14.2 â j30.5
13.4 â j26.7
S11
Equivalent Parallel
Circuit (R//C)
592.6R // 4.4pf
549.1R // 3.7pF
510.6R // 3.6pF
469.9R // 3.4pF
422.4R // 3.4pF
376.9R // 3.4pF
345.3R // 3.4pF
313.1R // 3.4pF
279.2R // 3.4pF
253R // 3.4pF
228.9R // 3.5pF
203.6R // 3.6pF
183.3R // 3.7pF
162.3R // 3.8pF
140.8R // 3.9pF
122.2R // 4pF
105.5R // 4.1pF
92.2R // 4.3pF
79.6R // 4.5pF
66.6R // 4.8pF
Impedance
(Ω-/+jΩ)
106 â j7.35
105 â j9.5
104 â j2.8
103 â j15.7
101 â j18.6
98 â j21.4
96 â j23.9
93 â j26.2
90 â j27.8
87 â j28.9
83 â j29.7
80 â j30.5
76 â j30.7
73 â j30.5
69 â j30.5
66 â j30.0
63 â j29.5
60 â j28.4
57 â j27.1
54 â j26.0
S22
Equivalent Parallel
Circuit (R//C)
106.6R // 2.1pF
106R // 1.4pF
105.7R // 1.2pF
105.3R // 1.2pF
104.4R // 1.1pF
103R // 1.1pF
101.5R // 1.1pF
99.9R // 1.1pF
98.3R // 1.1pF
96.1R // 1.1pF
93.7R // 1.1pF
91.3R // 1.1pF
88.6R // 1.1pF
85.6R // 1.1pF
82.6R // 1.1pF
79.7R // 1.1pF
76.7R // 1.2pF
73R // 1.2pF
69.5R // 1.2pF
66.3R // 1.2pF
Table 4 LNA S11 and S22 Impedances and Parallel Equivalent Circuit in 100⦠Mode
C3
L3
C2
L1
RF Input
C1
LNA IN
LNA
L2
LO
Figure 7 Recommended LNA Configuration and Inter-stage Match
C1
1nF
C2
33pF // 10nF
C3
18pF
L1
150nH
L2
2.7pF (capacitor)
L3
150nH
Table 5 150MHz LNA and Inter-stage Components (100⦠output mode)
C1
1nF
L1
C2
33pF // 10nF
L2
C3
10pF
L3
39nH
82nH
27nH
Table 6 450MHz LNA and Inter-stage Components (100⦠output mode)
ï£ 2015 CML Microsystems Plc
Page 12 of 70
D/994_A_E/1
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