RF2905 Просмотр технического описания (PDF) - RF Micro Devices
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RF2905 Datasheet PDF : 22 Pages
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11
RF2905
Evaluation Board Schematic
(Download Bill of Materials from www.rfmd.com.)
P1
P2
P3
P1-1 1 TX ENABL P2-1 1 LVL ADJ P3-1 1 MO D CTRL
2 GND
2 GND
2 GND
P1-3 3 PLL ENABL P2-3 3 N/C
P3-3 3 VCC
P4
1
P4-2 2
P4-3 3
P4-4 4
P4-5 5
VCC
C34
4.7 µF
LVL ADJ
PLL ENABL
GND
RX ENABL
P5-1
OSC SEL
DIV CTRL
MUTE
C32
10 nF
C33
22 pF
P5
1 LOCK DET
2 GND
R12 C30
10 Ω 10 nF
C31
22 pF
R23
0Ω
48 47 46 45 44 43
SLICER IN
R10
50 kΩ
R21
50 kΩ
C38
0.1 µF
C28
10 nF
C40
33 nF
C29 1nF
R11 1MΩ
3
2
1
4
5 U3
LM C 7211
R18 TBD
Q1
2N3904
R16
TBD
Circuit not populated.
O ptional Lock D etector
or O O K Data Slicer
C41
3-10
pF
C24
100pF
X2*
C42
3-10
pF
X1*
C26 C27
3.3 nF 47nF
R9*
C25 C23
100 pF100 pF
42 41 40 39 38 37
LOCK DET
OSC SEL
RX ENABL
TX ENABL
L6*
L7*
J1
RF
C35* C36*
R1
10 Ω
VCC
C3
10 nF
R3
10 Ω
VCC
C6
10 nF
C7
22 pF
1
2
C1 100 pF
3
C2
4
C39* 100 pF
5
G a in
C o n tro l
Lock
D e te c to r
Ref
Select
P rescaler
128/129 or
64/65
Phase
Detector &
Charge Pump
36
35
34
33
R17
3.9 kΩ
32
MOD CTRL
DIV CTRL
J6
MOD IN
VCC
R7
10 Ω
6
L1*
7
C4
22 pF
8
C5*
9
10
11
L2 8.2 uH
12
R4
8.2 kΩ
C8
13 14 15 16 17 18
10 pF
R15
0Ω
F1
S F E C V 1 0 .7
M S 3S -A -T C
BW =180kHz
C9 C10 C11
10 nF 10 nF 10 nF
F2
R14 C37
0 Ω 120 pF
SFECV10.7
M S 3S -A -T C
BW =180kHz
L3
2.2 µH
J2
MIXO UT
Linear
RSSI
19 20 21 22 23
C12 C13 C14
10 nF 10 nF 10 nF
31 C18*
L5*
C21
C22
22 pF 10 nF
30
D1 L4*
29
SM V 1233-011
C19
22 pF
C20
10 nF R6
10 Ω
R13 1.5 kΩ
28
C17 4 pF
DISC
R8
0Ω
27
C16 10 nF CDF107B-A0.001
26
J5
DATAOUT
25
J4
FM OUT
24
R5
51 kΩ
MUTE
J3
C15
1 nF
R22
N /C
SLICER IN
2905400-, 401-, 402-
Board
L (433MHz)
M (868MHz)
H (915MHz)
Test O nly
N ot Populated
C35 (pF) L6 (nH) L7 (nH) C39 (pF) L1 (nH)
8
22
22
8
47
4
8.2
Jumper
N /C
10
4
8.2
Jumper
N /C
10
C5 (pF) C 18 (pF) L4,L5(nH ) R 9 (kΩ) X1 (M H z) X2 (M H z)
35
3
27
2.4
6.78
6.612
10
5
4.7
2.7
13.577344 13.410156
10
5
4.7
2.7
7.15909 7.07549
11-68
Rev B11 010516
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