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HE412A Datasheet, PDF (1/1 Pages) BOWEI Integrated Circuits CO.,LTD. – Voltage Variable Attenuators | |||
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BOWEI
BOWEI INTEGRATED CIRCUITS CO.,LTD.
HE412A
Voltage Variable Attenuators
Features
âThin film coustraction
âHermetic package TO-8B
âOperating temperature range: -55â ï½+85â
Specifications( measured in a 50Ωsystem ,Vcc=+15V, TA=-55âï½+85â)
Parameter
Symbol Unit Guaranteed Typical
Frequency Range fLï½fH MHz 5ï½1000
â
Attenuation(Max) AMax dB
23
25
Insertion loss
IL
dB
2.5
2.2
VSWR of input/output VSWR â
2.0:1
1.5:1
DC Supply
VCC
V
â
+15
DC Current
ICC
mA
â
14
Control voltage VCO
V
â
0ï½15
Control Current ICO mA
â
0ï½7
Typical Performance
Attenuation VS. Frequency
0
15V
6V
10
3.5V
20
3V
30
0V
40
50
60
70
0
200 400 600 800 1000
Frequency(MHz)
VSWR VS. Frequency
2.2
2.0
1.8
1.6
VSWRo
1.4
1.2
VSWRi
1.0
0
200 400
600 800 1000
Frequency(MHz)
Attenuation VS. Temperature
0
Absolute Maximum Ratings
DC Supply: +18VDC
Input Power:+20dBm
Storage Temp:+125â
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
6
6V
12
3.5V
18
Ta=+25â
Ta=+85â
Ta= - 55â
0
200 400 600 800 1000
Frequency(MHz)
Attenuation VS.Control voltage
0
10
15
1.VCC
4.RF output
2
4
HExxx
2.RF input 5.VCO
3
3.GND
20
f=1000MHz
30
0
3
6
9
12 15
Control voltage(V)
â TEL:+86-311-87091891 87091887 â FAX:+86-311-87091282 â http://www.cn-bowei.com â E-mail:cjian@cn-bowei.com
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