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參數(shù)資料
| 型號： | RF2377-411PCBA |
| 廠商： | RF Micro Devices, Inc. |
| 英文描述： | PCS/CELLULAR TDMA/CDMA/W-CDMA LINEAR VARIABLE GAIN AMPLIFIER |
| 中文描述： | 個人通訊/蜂窩時分多址/碼分多址/的W - CDMA線性可變增益放大器 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大小： | 123K |
| 代理商： | RF2377-411PCBA |
4-46
RF2377
Rev A9 010411
4
G
A
Application S chematic
W-CDMA Application S chematic
Pin
1
Function
RF OUT
Description
RF output pin. This pin is DC coupled and requires V
CC
through a bias
inductor sized accordingly to provide a high pass transformation with a
series capacitor.
Ground connection. Keep traces physically short and connect immedi-
ately to ground plane for best performance.
Analog gain control pin. This pin controls the gain of the IC. Minimum
gain occurs at V
GC
<0.4V and maximum gain is achieved with
V
GC
=2.0V. 50dB of linear gain control with little variation of input P
1dB
is available.
RF input pin. This pin is DC coupled.
Interface Schematic
2
GND
3
GC
4
5
RF IN
GND
Ground connection. Keep traces physically short and connect immedi-
ately to ground plane for best performance.
Power supply. This pin should be connected to a regulated supply and
requires a bypass capacitor. Voltage is supplied through this pin to the
first stage collector; this voltage also controls the bias. Gain may be
tuned by adjusting the value of the feed inductor.
6
VCC
RF IN
4
5
6
3
2
1
Note orientation of
package in this schematic.
1 pF
GC
4.7 nH
47 nF
VCC
RF OUT
3.3 nH
47 nH
VCC
ATT
ATT
100 pF
RF IN
4
5
6
3
2
1
Note orientation of
package in this schematic.
1.2 pF
GC
4.7 nH
15 pF
VCC
2.7 nH
47 nH
VCC
ATT
ATT
15 pF
0.5 pF
2.2 nH
29 nH
29 nH
15 pF
1 uF
RF OUT
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