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11-21
RF2512
Rev B9 010509
11
Evaluation Board Schematic
L (433MHz) Board
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
Phase
Detector/
Charge Pump
Prescaler
Ref
Select
Gain
Control
C3
100 pF
C1
100 pF
C2*
100 pF
X1
6.78 MHz
X2*
6.612813
MHz
R5*
0
Ω
PLL ON
C8
100 pF
C7
8pF
L2
22 nH
L1
22 nH
C6
15 pF
C18
0.1 uF
50
Ω µstrip
J1
RF OUT
VCC
LVL ADJ
C4
0.01 uF
C5
22 pF
C19
8pF
VCC
C9
10 nF
C10
22 pF
TX EN
R3*
TBD
PRESC OUT
D1
SMV
1233-011
C15
5pF
L3
27 nH
L4
27 nH
L5
220 nH
R2
4.3 k
Ω
C12
10 nF
C13
22 pF
C14
4.7
µF
C16
47 nF
C17
4.7 nF
R1
2k
Ω
OSC SEL
MOD CTL
DIV 64
50
Ω µstrip
J2
MOD IN
C11
0.1
µF
2512400A
P1
1
2
3
CON3
P1-3
PLL ON
GND
P1-1
LVL ADJ
P2-3
TX EN
GND
P2-1
PRESC OUT
1
2
3
CON3
P2
P4-1
DIV 64
GND
P4-3
MOD CTL
1
2
3
CON3
P4
1
2
3
4
5
P3
CON5
P3-1
AUDIO
P3-3
OSCSLT
GND
P3-5
VCC
GND
R6*
0
Ω
C20
3-10 pF
D2*
D3*
R7*
0
Ω
AUDIO
*Denotes optional. These parts are not normally populated.
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