RF2488 View Datasheet(PDF) - RF Micro Devices
Part Name
Description
Manufacturer
RF2488 Datasheet PDF : 22 Pages
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Preliminary
RF2488
Evaluation Board Schematic
IF @ 135 MHz
(Download Bill of Materials from www.rfmd.com.)
FL1*
Saw Filter
I/O
I/O
R2*
R3*
0Ω
0Ω
R4
L2
0Ω
4.7 nH
50 Ω µstrip
J2
MX1 IN
J1
LNA1 OUT
LNA1 VCC
GAIN SEL
J4
LNA1 IN
J5
LNA2 IN
50 Ω µstrip
R1
0Ω
C1
L1
1.2 pF 15 nH
C4
100 pF
C5
100 pF
TRL
L8
C13
56 nH 33 nF
50 Ω µstrip
50 Ω µstrip
L10
2.2 nH
C12
33 nF
C11*
L9*
DNI
DNI
TRL
Bias VCC C10
5 pF
C2
100 pF
L6
4.7 nH
24 23 22 21 20 19
1
18
2
17
3
16
4
15
5
14
C3
100 pF
L3
2.2 nH
C6
100 pF
L11
180 nH
C14
10 pF
L15
560 nH
R9
820 Ω
C20
1 nF
C15
10 pF
C19
1 nF
MX VCC
L13
180 nH
C22
8 pF
50 Ω µstrip
50 Ω µstrip
TX/RX
J3
LO1 IN
Band Select
J7
IF1 OUT
6
13
C7
LNA2 VCC
7 8 9 10 11 12
100 pF
C16
C18
8
C8
10 pF
L17
10 nH
L4
12 nH
2488400-
L7
8.2 nH
10 pF
1 nF
L12
C17
L16
R10
C23
J8
LNA2 OUT
50 Ω µstrip
R5
0Ω
C24
100 pF
C9
100 pF
C25
3 pF (HQ)
R6*
0Ω
R7*
0Ω
I/O
I/O
IF OUT
SELECT
180 nH
L5
2.2 nH
R8
0Ω
10 pF
560 nH 820 Ω
C21
1 nF
8 pF
L14
180 nH
50 Ω µstrip
50 Ω µstrip
50 Ω µstrip
J6
IF2 OUT
J9
LO2 IN
J10
MX2 IN
FL2*
Saw Filter
VCC
P1
1
JP1
1
NOTE: Parts with * after reference designator should not be populated on evaluation board.
2
LNA1 VCC
2
GND
3
4
CON2
5
6
LNA2 VCC
MX VCC
7
8
IF Out Select
9
10
Gain Select
11
12
Bias VCC
13
14
Band Select
15
C26 + C27
1 µF
1 nF
HEADER 8X2
16
C28
R11
C29
R12
C30
1 nF
10 kΩ
1 nF
10 kΩ
1 nF
C31
1 nF
R13
10 kΩ
C32
1 nF
R14
10 kΩ
C33
1 nF
C34
1 nF
TX/RX
C35
1 nF
Rev A0 010905
8-133
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