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DATA SHEET " SKY12146-321LF VARIABLE VOLTAGE ATTENUATOR
Skyworks Solutions, Inc. " Phone [781] 376-3000 " Fax [781] 376-3100 " sales@skyworksinc.com " www.skyworksinc.com
 
200270J " Skyworks Proprietary Information " Products and Product Information are Subject to Change Without Notice " April 11, 2011
3
Table 3. SKY12146-321LF Electrical Specifications (Note 1)
(TOP = 25 癈, Characteristic Impedance [ZO] = 50 ? Unless Otherwise Noted)
Parameter
Symbol
Test Condition
Min
Typical
Max
Units
Insertion loss
IL
VC = 1.4 V
2.7 to 3.2 GHz
3.2 to 3.8 GHz
3.8 to 4.0 GHz
 
 
1.4
1.5
1.6
 
 
1.8
 
dB
dB
dB
Attenuation
Attn
VC = 0 V
2.7 to 3.2 GHz
3.2 to 3.8 GHz
3.8 to 4.0 GHz
 
 
18.0
 
20.0
20.0
20.5
 
 
dB
dB
dB
Return loss
|S11|
2.7 to 3.2 GHz
3.2 to 3.8 GHz
3.8 to 4.0 GHz
 
11
12
14
27
 
dB
dB
dB
Switching characteristics:
   Rise, fall
   On, off
   Video feedthrough
 
 
10/90% or 90/10% RF
50% VCTL to 90/10% RF
TRISE = 1 ns, bandwidth =
   500 MHz
 
 
50
150
 
25
 
 
ns
ns
 
mV
Maximum input power for <1 dB attenuation
variation
PIN
3.2 to 3.8 GHz
 
+13
 
dBm
3
rd
 Order Input Intercept Point
IIP3
3.2 to 3.8 GHz
 
+20
 
dBm
Control voltage
VCTL
 
0
 
1.4
V
Control current
ICTL
 
 
5
 
糀
Note 1: Performance is guaranteed only under the conditions listed in this Table.
 
Typical Performance Characteristics
(TOP = 25 癈, Characteristic Impedance [ZO] = 50 ? Unless Otherwise Noted)
 
 
Figure 3. Typical Insertion Loss
(VC = 1.4 V)
 
 
Figure 4. Typical Insertion Loss vs VC
 
 
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