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參數(shù)資料
| 型號： | RF2311PCBA |
| 廠商： | RF Micro Devices, Inc. |
| 英文描述： | GENERAL PURPOSE AMPLIFIER |
| 中文描述： | 通用放大器 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大小： | 61K |
| 代理商： | RF2311PCBA |
4-83
RF2311
Rev C3 010228
4
G
A
Pin
1
Function
VCC
Description
Power supply pin. An external bypass capacitor is recommended. The
total supply current is shared between this pin and pin 8 (through the
inductor).
Ground connection. Keep traces physically short and connect immedi-
ately to ground plane for best performance.
Same as pin 2.
Interface Schematic
See pin 8.
2
GND
3
4
GND
RF IN
RF input pin. This pin is NOT internally DC blocked. A DC blocking
capacitor, suitable for the frequency of operation, should be used in
most applications. DC coupling of the input is not allowed, because this
will override the internal feedback loop and cause temperature instabil-
ity.
Same as pin 2.
See pin 8.
5
6
7
8
GND
GND
GND
RF OUT
Same as pin 2.
Same as pin 2.
RF output pin. Because DC is present on this pin, a DC blocking capac-
itor, suitable for the frequency of operation, should be used in most
applications. The DC voltage on this pin is typically 2.4V. Alternatively,
power supply may be connected to this pin. A series resistor and induc-
tor should be used, in which case the L should be large enough to
present a high impedance at the lowest operating frequency, and the R
should be (V
CC
- 2.4) / I, where I is the desired device current (between
8mA and 20mA).
RF OUT
RF IN
VCC
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