RF2609 데이터 시트보기 (PDF) - RF Micro Devices
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RF2609 Datasheet PDF : 8 Pages
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10
RF2609
Application Schematic
Measurement
Reference Plane
ZS=1 kΩ
IN+
10 nF
1
10 nF
GAIN
CONTROL
3.3 kΩ
16
GAIN
IN-
2
15
10 nF
ZIN=1 kΩ
3
14
4
13
S 5
12
N 6
11
G 7
10
I 8
9
S ZLOAD,EFF=500 Ω
E R2 sets the balanced output impedance to 1 kΩ. L1 and C2
D serve dual purposes. L1 serves as an output bias choke,
10 nF
VCC
C1 L1
C2
R2:
1 kΩ
C2
C1
L1 ZOUT=1 kΩ
VCC
10 nF
ZLOAD=1 kΩ
CDMA Filter
OUT+
OUT-
Measurement
Reference Plane
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 1kΩ.
Otherwise, the values of L1 and C1 are chosen to form a
parallel-resonant tank circuit at the IF when the IF filter's
NEW input impedance is 1 kΩ.
NOT FOR
10-12
Rev B3 000822
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