HE411B Datasheet, PDF (1/1 Pages) BOWEI Integrated Circuits CO.,LTD. – Voltage Variable Attenuators

BOWEI
BOWEI INTEGRATED CIRCUITS CO.,LTD.
HE411B
Voltage Variable Attenuators
Features
●Thin film coustraction
●Hermetic package TO-8B
●Operating temperature range : -55℃ ～+85℃
Specifications( measured in a 50Ωsystem ,Vcc=+15V, TA=-55℃～+85℃)
Parameter
Symbol Unit Guaranteed Typical
Frequency Range ^fL^～fH MHz 20～500
–
Attenuation(Max) AMax dB
31
33
Insertion loss
IL
dB
1.8
1.5
VSWR of input/output VSWR –
2.0:1
1.4:1
DC Supply
VCC
V
–
+15
DC Current
ICC
mA
–
14
Control voltage VCO
V
–
0～15
Control Current ICO
mA
–
0～7
Absolute Maximum Ratings
DC Supply: +18VDC
Input Power:+20dBm
Storage Temp:+125℃
51
4
2
3
TO- 8B
Application Notes
1.Functional schematic shown as following,which include
an internal coupling capacitor.
2.Interexchangable input and output ports
3.Cascaded with amplifier can be used as VGC amplifier
4.See assembly section for mounting method
15
1.VCC
4.RF output
2
4
HExxx
2.RF input 5.VCO
3
3.GND
Typical Performance
Attenuation VS. Frequency
0
15V
1.5V
10
0.8V
20
0.7V
30
40
0V
50
60
70
0 100 200 300 400 500
Frequency(MHz)
VSWR VS. Frequency
2.2
2.0
1.8
1.6
1.4
VSWRi
1.2
VSWRo
1.0
0
100 200 300 400 500
Frequency(MHz)
Attenuation VS. Temperature
0
15V
6
1.5V
12
1V
18
Ta=+25℃
Ta=+85℃
Ta= - 55℃
0
100 200 300 400 500
Frequency(MHz)
Attenuation VS.Control voltage
0
15
30
f=500MHz
45
f=100MHz
0
3
6
9
12 15
Control voltage(V)
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