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11-96
RF2908
Rev C1 010904
11
Application Schematic
915MHz
6.8nH
LNA
+45°
-45°
0-25 dB
0-20 dB
-12-12dB
17dB
6dB
-0.5/-20.5
Chip
Control
5-bit Counter
/32
Prescaler
32/33
7-Bit Swallow
Counter
0-85
7-Bit
Latch
Phase
Detector
Charge Pump
7-Bit Counter
/94
902-928 MHz
VCO
Ref. Osc.
300 kHz
300 kHz
46
14
13
12
11
4
35
36
37
38
1
2
47 48
44
3
6
8
10
7
9
5
43
17
20
39
42
45
22
41
40
21
19
15
18
16
7
30
31
32
33
29
28
23
24
7-Bit Shift
Register
7
26
25
27
34
100pF
100pF
56pF
0.27
µF
56pF
0.1
µF
47pF
+3.3V REG
47pF
0.1
µF
4.7
µF
2k
Ω
L
C
C
L
L
C
C
L
10
Ω
0.27
µF
22k
Ω 2.2nF
220pF
Loop Filter
0.1
µF
47pF
10
Ω
1
µF
+3.3V REG
0.1
µF
47pF
10
Ω
+3.3V REG
0.1
µF
47pF
10
Ω
+3.3V REG
0.01
µF
47pF
10
Ω
+3.3V REG
0.01
µF
47pF
10
Ω
+3.3V REG
0.1
µF
0.1
µF
6.8nH
6.8nH
Refer to Filter Design Information
for Component Values
0.1
µF
0.1
µF
Refer to Filter Design
Information for
Component Values
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