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參數(shù)資料
| 型號： | RF2104PCBA-H |
| 廠商： | RF Micro Devices, Inc. |
| 英文描述： | MEDIUM POWER AMPLIFIER |
| 中文描述： | 中功率功率放大器 |
| 文件頁數(shù)： | 3/8頁 |
| 文件大小： | 112K |
| 代理商： | RF2104PCBA-H |
2-13
RF2104
Rev B4 010507
2
P
Pin
1
Function
VCC1
Description
Power supply for the bias circuits.This pin draws current proportional to
V
PC
. When V
PC
is 2.5V the maximum current is about 30mA. When
V
PC
goes down to 0V the current also goes down to 0mA.
Interface Schematic
2
GND
Ground connection. For best performance, keep traces physically short
and connect immediately to ground plane. A via hole under each
ground pin to the ground plane is recommended.
Same as pin 2.
3
4
GND
VCC2
Power supply for the driver stage and interstage matching. An external
decoupling capacitor is required. The electrical length between the pin
and this capacitor affects the gain. See the application schematic for
recommended line length for optimum gain. For operation at frequen-
cies below 600MHz a series inductor is required.
5
RF IN
50
RF input. DC voltages are present at this pin, and an external
blocking capacitor is required when connecting this pin to a DC path to
ground. For optimum impedance matching, a shunt inductor to ground
is recommended; see the application schematic for details.
Same as pin 2.
See pin 4 schematic.
6
7
8
GND
GND
PC
Same as pin 2.
Power control pin. A DC voltage between 0V and 3.0V can be applied
to control the gain. When no gain control is required this pin should be
connected to a fixed voltage between 2.5V and 3.0V. This pin draws
some current proportional to V
PC
. When V
PC
is 2.5V the maximum cur-
rent into this pin is about 1mA.
Same as pin 2.
See pin 1 schematic.
9
GND
GND
GND
RF OUT
10
11
12
Same as pin 2.
Same as pin 2.
RF output. The power supply for the output stage also needs to be sup-
plied to this pin through the external matching circuit. The load imped-
ance to this pin should be 5+j0
for maximum output power.
13
14
15
16
RF OUT
GND
GND
GND
Same as pin 12.
See pin 12 schematic.
Same as pin 2.
Same as pin 2.
Same as pin 2.
40
PC
VCC1
To Bias
Stages
RF IN
VCC2
From Bias
Stages
RF OUT
From Bias
Stages
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