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Preliminary
8-97
RF2475
Rev A2 010918
8
Evaluation Board Schematic
(Download Bill of Materials from www.rfmd.com.)
1
2
5
6
4
3
7
14
13
12
11
10
9
8
15
16
17
18
20
19
21
22
23
24
25
26
27
28
X2
C23
10 pF
L1
8.2 nH
L14
10 nH
VCC LNA2
C21*
DNI
C1
1nF
2
5
R3*
DNI
C2
3pF
VCC MX1
FL2*
FAR-F6CE-
1G9600-L2XB
IN
OUT
R1
0
Ω
C4
0.5 pF
L2
18 nH
R2
0
Ω
J1
LNA2 OUT
50
Ωµstrip
J2
MX2 IN
50
Ωµstrip
R5
300
Ω
L3
7.5 nH
C5
3pF
VCC LO1
C7
100 pF
C6
4pF
J10
LO1 OUT
50
Ωµstrip
L4
4.7 nH
C36
3pF
J3
LO1 IN
50
Ωµstrip
C8*
DNI
C11
8pF
L6
56 nH
L5
56 nH
C9
3pF
VCC IF
C10
1nF
C24*
DNI
C22
1nF
R6*
DNI
C12
10 pF
L7
150 nH
J4
IF OUT
50
Ωµstrip
Part of Test Board
C13
3pF
VCC DBLR
C14
100 pF
+
R7
510
Ω
L8
1.8 nH
C15
1.5 pF
VCC LO2
C16
1.5 pF
R4
0
Ω
J5
LO2 OUT
50
Ωµstrip
C18
3pF
VCC MX2
L11
12 nH
C20
100 pF
VCC LNA1
C19
1.2 pF
R11*
DNI
R10
0
Ω
J7
LNA1 OUT
50
Ωµstrip
R9*
DNI
R8
0
Ω
FL1*
FAR-F5CE-
881M50-K210
2
5
IN
OUT
J6
MX1 IN
50
Ωµstrip
C17
3pF
L15
2.7 nH
L9
39 nH
GAIN SEL
TRL1
C38
33 nF
L12
3.9 nH
J8
LNA1 IN
50
Ωµstrip
C37
33 nF
L13
56 nH
C38
4pF
L12
3.9 nH
J9
LNA2 IN
50
Ωµstrip
2475400, Rev. -
GND
P2-2
GAIN SEL
P2-3
GAIN
P2
1
2
3
CON3
GND
GND
P1-4
VCC
P1-1
VCC
P1
1
2
3
4
CON4
NOTES:
1. For best image rejection, provide a common ground under the device connecting pins 10, 11, 26, and 27.
2. There is a single gain select pin for both frequency bands.
3. The image reject SAW filters are assumed to have a 3 dB insertion loss and 40 dB of image rejection.
4. Parts with "*" should not be populated on the evaluation board.
C26
1nF
C25
1uF
+
C29
1nF
C35
1nF
C31
1nF
C33
1nF
Gain
VCC LNA2
VCC LNA1
VCC MX2
VCC LO2
VCC DBLR
VCC IF
VCC MX1
VCC LO1
VCC
C28
1nF
C30
1nF
C34
1nF
C32
1nF
JP1
HEADER 9X2
16
18
17
13
15
14
10
12
11
7
9
8
4
6
5
1
3
2
Part of Test Board
C27
1nF
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