RF2905 Просмотр технического описания (PDF) - RF Micro Devices
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RF2905 Datasheet PDF : 22 Pages
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RF2905
11
Application Schematic
868 MHz
VCC
4.7
uF
VCC 10 Ω
10 nF
VCC 10 Ω
10 nF
10 22
nF pF
10 Ω
TX DATA
LVL ADJ
PLL ENABL
10 nF
22 pF
3.9 kΩ
47 nF
6.8
6.8
nH D1 nH
3 pF
2.7
3.3 kΩ
nF
0.1
uF
RX ENABL
1
TX ENABL
2
Filter
100 pF
3
48 47 46 34 31 30
Gain
Control
5
100 pF
10 nH
22 pF
7
10 pF
9
11
8.2 uH
12
22 pF
41
43 42
Lock
Detector
Phase
Detector &
Charge Pump
Prescaler
128/129 or
64/65
Linear
RSSI
100
pF
100 100
pF pF
40 39 38
Ref
Select
LOCK DET+
10 Ω VCC
22 pF 10 nF
44
32
10 Ω VCC
22 10 nF
pF
37
OSC SEL
45 PRESCL OUT
36
MOD CTRL
35
DIV CTRL
24
25
FM OUT
26
DATA OUT
11 pF
13 14 15
16
Filter
10 nF
10 nF
10 nF
17 18 20
21
22 28 27 29 23
Filter
5 pF
10 nF
10 nF 10 nF
FM Disc.
51 kΩ
RSSI
10 pF
MUTE
VCC
D1 : SMV1233-011
PLL LOOP BANDWIDTH ~5 kHz
22 pF 10 nF 10 Ω
11-66
Rev B11 010516
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