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6-4
RF2456
Rev B6 010717
6
Application Schematic
Evaluation Board Schematic
(Download Bill of Materials from www.rfmd.com.)
33 nF
33 nF
15 nH
LO IN
IF SELECT
33 nF
5.6 nH
3.3 pF
15 nH
L
L
L
CDMA SAW Filter
33 nF
1
µF
FM SAW Filter
L
CDMA IF OUT
FM IF OUT
V
CC
PD
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
MIX IN
C9
33 nF
C6
33 nF
L5
8.2 nH
C7
1.5 pF
L6
15 nH
C1
33 nF
L1
150 nH
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
2456400 Rev A
T1
**XFMER
R3
10
Ω
C2
10 pF
R1
33
Ω
R2
68
Ω
C8
33 pF
50
Ωµstrip
J1
RF IN
50
Ωµstrip
J4
LO IN
VCC
50
Ωµstrip
J2
FM IF2
50
Ωµstrip
J3
CDMA IF1
IF SELECT
ENABLE
P2
1
2
3
P2-3
ENABLE
GND
P2-1
IF SELECT
GND
P1-1
VCC
P1
1
2
3
L7
15 nH
50
Ωµstrip
J5
L8*
TBD
R4
220
Ω
C3
9pF
L2
390 nH
C4
9pF
C5
33 nF
C10
1uF
+
L3
3.3 uH
VCC
L4
3.3 uH
VCC
NOTE:
**Core: Fair-Rite Balun #2865002402
L12: 3 turns #30 AWG (Green)
L34: 12 turns #32 AWG (Red)
One turn = One pass through BOTH holes winding starts and finishes on same end of core.
L12 and L34 exit opposite ends of core.
2
F1*
DNI
GND
0
0
1
1
Enable
0
1
0
1
IF Select
Off
Off
FM
CDMA
Stage
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