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參數(shù)資料
| 型號： | RF2908 |
| 廠商： | RF MICRO DEVICES INC |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | 915MHZ SPREAD SPECTRUM RECEIVER WITH PLL FREQUENCY SYNTHESIZER |
| 中文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PQFP48 |
| 封裝： | PLASTIC, LQFP-48 |
| 文件頁數(shù)： | 13/18頁 |
| 文件大?。?/td> | 534K |
| 代理商： | RF2908 |
11-97
RF2908
Rev C1 010904
11
T
Evaluation Board S chematic
(Download Bill of Materials from www.rfmd.com.)
C23
100 nF
C25
1 nF
L8
10
μ
H
C26
470 pF
C41
10 nF
C40
10 nF
T2
5:1
50
μ
strip
J9
Q MIX OUT
C42
10 pF
L9
10
μ
H
C34
22 pF
C33
10 nF
R6
10
VCC
C36
22 pF
C35
10 nF
R5
10
VCC
ATTN
50
μ
strip
J1
RF IN
L5
8.2 nH
C18
100 nF
C20
220 nF
L7
10
μ
H
C16
470 pF
C38
10 nF
C37
10 nF
T1
5:1
50
μ
strip
J2
I MIX OUT
C39
10 pF
L6
10
μ
H
I DCFB
IF VCC
J3
IF OUT
C2
68 pF
C1
33 pF
X1
9.6 MHz
I RSSI
C43
68 pF
J4
I DATA
R7
0
IF VCC
L3
5.6 nH
L2
5.6nH
PLL VCC
C9
10 nF
C10
22 pF
C5
47 pF
R3
0
50
μ
strip
C7
Open
C6
Open
J5
LO OUTB
C11
47 pF
R7
0
50
μ
strip
C13
Open
C12
Open
J6
LO OUT
R2
1 k
PLL VCC
C45
1
μ
F
C3
10 nF
C4
22 pF
R2
1 k
R8
12 k
PLL DATA
R9
27 k
R12
12 k
PLL CLK
R13
27 k
R10
12 k
LE
R11
27 k
C14
220 pF
R4
33 k
C15
4.7 nF
PLL ENABL
RX ENABL
BW SEL2
BW SEL1
J7
Q DATA
Q RSSI
C44
68 pF
VREF
C21
47 nF
DCFBQ
IF VCC
C22
220 nF
C46
1
μ
F
J8
IF OUT Q
GC
P1-1
P1-3
P1
DCFBQ
GND
1
2
3
VREF
P7-1
P7-3
P7
ATTN
GND
1
2
3
RX ENABL
P8-1
P8-3
P8
BW SEL1
GND
1
2
3
BW SEL2
P2-3
P2
IF VCC
GND
1
2
3
GC
P3-1
P3-3
P3
Q RSSI
GND
1
2
3
I RSSI
P4-1
NC
P4
DCFBI
GND
1
2
3
NC
P5-3
P5
AMP D-Sub
LE
1
2
3
4
5
6
7
8
9
PLL DATA
C32
10 nF
C31
100 pF
C30
10 nF
C29
100 pF
C28
10 nF
C27
100 pF
P2-1
P6-1
P6-3
P6
PLL VCC
GND
1
2
3
PLL ON
PLL CLK
GND
NC
NC
NC
NC
P5-8
P5-2
2908400-
1
2
3
4
5
6
7
8
9
10
11
12
36
35
34
33
32
31
30
29
28
27
26
25
MOUT Q+
MIX VCC
MIX GND
LNA GND
LNA IN
SW GND
LNA VCC
SW GND2
ATTN
MOUT I+
MOUT I-
PLL ENABL
DO
LO OUT
RESNTR-
RESNTR+
LO OUT B
PLLD VCC
PLL GND
PLL DATA
PLL CLK
LE
48
45
46
47
I
13
I
14
G
15
D
16
V
17
G
18
I
19
V
20
I
21
R
22
O
23
O
24
I
I
G
D
V
V
I
V
R
Q
B
44
43
42
41
40
39
38
37
MOUT Q-
RX
ENBL
C24
100 nF
C19
100 nF
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