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參數(shù)資料
| 型號(hào)： | AS3801 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類(lèi)： | 衰減器 |
| 英文描述： | CDMA/FM TRANSMIT AGC AMPLIFIER AS3801 |
| 中文描述： | RF/MICROWAVE WIDE BAND LOW POWER AMPLIFIER |
| 文件頁(yè)數(shù)： | 4/7頁(yè) |
| 文件大?。?/td> | 75K |
| 代理商： | AS3801 |
Preliminary Data Sheet
AS3801
Rev. C
4/7
Nov. 98
Pin Description
Pin#
Symbol
Function
1
CDMA+
CDMA Positive Differential Input
2
CDMA-
CDMA Negative Differential Input
3
GND
Analog Ground
4
GND
Analog Ground
5
GND
Analog Ground
6
GND
Analog Ground
7
GND
Analog Ground
8
PWD
Power down, CMOS Input V
PWD-RX
>=3.4V, RX-AGC Active
V
PWD-RX
<=0.5V, RX-AGC Off
9
OUT-
Analog Differential Output
10
OUT+
Analog Differential Output
11
GND
Analog Ground
12
GND
Analog Ground
13
VCC
VCC Power Supply
14
VCC
VCC Power Supply
15
VCC
VCC Power Supply
16
VCTRL
Analog Control Input
VCTRL=0.2V, Low Gain Rail; VCTRL=3V, High Gain Rail
Definition of CDMA Source Impedance,
Z
S
, and AS3801 Input Impedance Z
IN
IF Signal
Source
CDMA+
Zs=1k
Zin=1k
(typ)
Vp
Vn
CDMA-
Definition of Load Impedance, Z
L
, and
AS3801 Output Impedance Z
O
TX-CDMA
Z
L
Measurement
Reference Plane
OUT+
Output
Port
OUT-
VCC
L2
R
B
L1
Z
0
ZL
eff
TX-CDMA Output Port Impedance
Load Impedance
Bias Resistor
Bias Inductors
Z
O
>10k
Z
L
=1k
R=1k
L
1
=L
2
=Choke,
ω
.L>>R
B
Z
Leff
=500
Effective Load
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