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RF2461
Rev B6 DS060925
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
Evaluation Board Schematic - CDMA
LO@965MHz, RF@880MHz, IF@85MHz
(Download Bill of Materials from www.rfmd.com.)
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
20
19
18
17
16
VCC1
50
Ω μstrip
C1
33 nF
L2
16 nH
50
Ω μstrip
L1
4.3 nH
50
Ω μstrip
IF SEL
ENABLE
IP SET
C16
100 pF
50
Ω μstrip
R6
56
Ω
50
Ω μstrip
50
Ω μstrip
L8
390 nH
C15
100 pF
50
Ω μstrip
C14
10 pF
50
Ω μstrip
L9
470 nH
50
Ω μstrip
R5
10 k
Ω
C13
11 pF
C12
11 pF
C11
100 pF
50
Ω μstrip
C8
10 pF
50
Ω μstrip
L6
470 nH
R4
10 k
Ω
C9
11 pF
50
Ω μstrip
50
Ω μstrip
50
Ω μstrip
C10
11 pF
L7
390 nH
VCC1
C7
100 pF
50
Ω μstrip
R1
620
Ω
L3
7.5 nH
C5
4 pF
50
Ω μstrip
C4
100 pF
C3
0.1
μF
VCC1
R2
18 k
Ω
R3
47 k
Ω
L4
3.3 nH
50
Ω μstrip
C6
33 nF
50
Ω μstrip
L5
47 nH
50
Ω μstrip
P1
1
2
3
CON3
P1-3
LNA GAIN
GND
P1-1
MIX GAIN
P2
1
2
3
CON3
P2-3
ENABLE
P2-2
IP SET
P2-1
IF SEL
P3
1
2
3
CON3
P3-1
VCC1
GND
P3-3
VCC2
VCC2
VCC1
Note: R14 improves NF and IIP3 for VCC = 3.0 V
R14
51
Ω
50
Ω μstrip
L=130 mils
W=12 mils
Z0=50 Ω
J1
LO IN
447 pS Electrical Delay
0.13 dB Line Loss
J2
LNA IN
329 pS Electrical Delay
0.10 dB Line Loss
LNA GAIN
MIX GAIN
J3
LNA OUT
498 pS Electrical Delay
0.15 dB Line Loss
J5
IF1 OUT
348 pS Electrical Delay @ 110 MHz
0.03 dB Line Loss
J4
MIXER IN
320 pS Electrical Delay @ 880 MHz
0.10 dB Line Loss
J6
IF2 OUT
348 pS Electrical Delay @ 110 MHz
0.03 dB Line Loss
BYPASS
C2
100 pF
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