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Preliminary
8-41
RF2492
Rev A4 010828
8
Application Schematic
1
3
6
4
5
2
9
14
10
13
11
12
32
27
31
28
30
29
24
22
19
21
20
23
26
25
7
8
15
16
18
17
33 nF
X2 ENABLE
BAND SEL
120
Ω
47 nH
C2
33 nF
36 nH
2.2 nH
33 nF
47 nH
C1
20 pF
33 nF
180 nH
18 pF
270 nH
8pF
20 pF
180 nH
18 pF
270 nH
8pF
33 nF
LNA GAIN
C2
33 nF
IN
OUT
7.5 nH
IP SET
IF SEL
2
5
C1
F1
47 nH
C1
IN
OUT
33 nF
F2
4
1
5
2
6
3
27 k
Ω
4pF
5.6 nH
MIX GAIN
VCO L OUT N
VCO L OUT P
VCO H OUT N
VCO H OUT P
V
CC
LNA H IN
LO IN
V
CC
V
CC
IF1 OUT
V
CC
IF2 OUT
LNA L IN
V
CC
V
CC
4pF
LNA L OUT
33 pF
NOTES:
1. C1's are not needed if filter DC impedance is open circuit (as is normally the case).
2. C2's are not needed if duplexer DC impedance is open circuit (as is normally the case).
3. IF interface shown is 50
Ω @110 MHz.
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