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11-65
RF2905
Rev B11 010516
11
Application Schematic
915MHz
17
18
26
12
11
9
Linear
RSSI
24
7
5
Gain
Control
47
3
31
30
34
Prescaler
128/129 or
64/65
Phase
Detector &
Charge Pump
41
40
39
38
35
36
Lock
Detector
42
43
Ref
Select
37
14
13
DATA OUT
RSSI
DIV CTRL
MOD CTRL
OSC SEL
23
MUTE
21
20
22
16
15
LVL ADJ
LOCK DET+
45
PRESCL OUT
28
27
25
FM OUT
D1
4.7
nH
4.7
nH
V
CC
2.7
k
Ω
3.3
nF
47 nF
Filter
22 pF
10 nH
10 pF
V
CC
8.2
µH
22 pF
V
CC
Filter
Filter
FM Disc.
51 k
Ω
10 pF
TX DATA
3.9 k
Ω
5pF
22 pF
10 nF
100 pF
100 pF
10 nF
10 nF
10 nF
10 nF
10 nF
10 nF
5pF
100
pF
100
pF
100
pF
0.1
uF
10
Ω
11 pF
10
Ω
10 nF
10
Ω
10 nF
D1 : SMV1233-011
22 pF
29
10
Ω
V
CC
10 nF
2
1
48
PLL ENABL
RX ENABL
TX ENABL
22
pF
V
CC
10 nF
32
PLL LOOP BANDWIDTH ~5 kHz
10
Ω
46
4.7
uF
22 pF
V
CC
10 nF
10
Ω
44
10
nF
22
pF
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