參數(shù)資料
型號(hào): RF2619
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 LOW POWER AMPLIFIER
封裝: PLASTIC, SSOP-16
文件頁(yè)數(shù): 4/8頁(yè)
文件大?。?/td> 114K
代理商: RF2619
10-28
RF2619
Rev B5 010720
10
I
Application S chematic
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
10 nF
10 nF
R2:
1 k
C2
C2
L1
C1
L1
C1
V
CC
10 nF
V
CC
CDMA Filter
OUT+
OUT-
IN+
IN-
Measurement
Reference Plane
Z
IN
=1 k
Z
S
=1 k
Z
OUT
=1 k
Z
LOAD
=1 k
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 1k
.
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
.
Z
LOAD,EFF
=500
Measurement
Reference Plane
10 nF
10 nF
3.3 k
GAIN
GAIN
CONTROL
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