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參數(shù)資料
| 型號： | RF2629 |
| 廠商： | RF MICRO DEVICES INC |
| 元件分類： | 衰減器 |
| 英文描述： | 3V CDMA/FM TRANSMIT AGC AMPLIFIER |
| 中文描述： | 12 MHz - 175 MHz RF/MICROWAVE WIDE BAND HIGH POWER AMPLIFIER |
| 封裝： | PLASTIC, MSOP-8 |
| 文件頁數(shù)： | 4/6頁 |
| 文件大?。?/td> | 103K |
| 代理商： | RF2629 |
10-42
RF2629
Rev B4 010720
10
I
Application S chematic
Evaluation Board S chematic
(Download Bill of Materials from www.rfmd.com.)
1
2
3
4
8
7
6
5
GAIN
CONTROL
10 nF
10 nF
IN+
IN-
Measurement
Reference Plane
Z
IN
=1 k
Z
S
=1 k
R2:
1 k
C2
C2
L1
C1
L1
C1
V
CC
10 nF
V
CC
CDMA Filter
OUT+
OUT-
Z
OUT
=1 k
Z
LOAD
=1 k
Z
LOAD,EFF
=500
Measurement
Reference Plane
10 nF
3.3 k
GAIN
R2 sets the balanced output impedance to 1 k
. L1 and C2
serve dual purposes. L1 serves as an output bias choke, and C2
serves as a series DC block. In addition, the values of L1 and
C2 may be chosen to form an impedance matching network if
the load impedance is not 1 k
. Otherwise, the values of L1 and
C1 are chosen to form a parallel-resonant tank circuit at the IF
when the IF filter's input impedance is 1 k
.
GAIN
CONTROL
C8
33 pF
L3
100nH
L4
100nH
C6
10 nF
C7
10 nF
R1
3.3 k
T1
C3
5 pF
C1
10 nF
C4
5 pF
C2
10 nF
L1
270 nH
L2
270 nH
1
2
3
4
8
7
6
5
T2
C5
1 nF
50
μ
strip
J2
SMA
OUT
50
μ
strip
J1
SMA
CDMA
1
2
3
P1-1
P1-3
VCC
GND
P1
GC
GC
VCC
2629400, Rev A
VCC
C10
10 nF
R2
510
R3
510
1
1
C11
22 pF
C12
22 pF
C9
33 pF
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| RF2705PCBA-41X | 887664400 |
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