HE891A Datasheet, PDF (1/1 Pages) BOWEI Integrated Circuits CO.,LTD. – Voltage Variable Attenuators

BOWEI
BOWEI INTEGRATED CIRCUITS CO.,LTD.
HE891A/HEM891A
Voltage Variable Attenuators
Features
●Thin film coustraction
●Hermetic package
●Operating temperature range_{: -55℃ ～+85℃}
Specifications( measured in a 50Ωsystem ,Vcc=+5V, TA=-55℃～+85℃)
Parameter
Symbol Unit Guaranteed Typical
Frequency Range ^fL^～fH MHz 20～200
5～300
Attenuation(Max) AMax dB
57.0
–
Insertion loss
IL
dB
3.2
2.9
VSWR of input/output VSWRi ^–
1.8:1
1.3:1
VSWR of output _VSWRo V
1.8:1
1.3:1
DC Current
ICC
mA
–
10
Control voltage/Current VCO/ ICO _V/mA
–
0～15/0～20
Absolute Maximum Ratings
1
DC Supply: +7VDC
4
2
Input Power:+23dBm
3
Storage Temp:+125℃
TO-8A-1
1
2 HEMXXX
4
Lot number
3
SMO-8C
Application Notes
1.Functional schematic shown as following,which include
an internal coupling capacitor.
2.Interexchangable input and output ports
3.See assembly section for mounting method
15
1.VCC
2
4
2.RF input
HExxx
3.VCO
3
4.RF output
The metal case is Ground
Typical Performance
Attenuation VS. Frequency
0
15V
5.0V
10
2.5V
20
1.5V
30
40
50
60
0V
70
80
5
100
200 250
Frequency(MHz)
VSWR VS. Frequency
2.2
2.0
1.8
1.6
VSWRi
1.4
1.2
VSWRo
1.0
5
100
200 250
Frequency(MHz)
Attenuation VS. Temperature
10
20
2.0V
30
1.5V
40
Ta=+25℃
Ta=+85℃
Ta= - 55℃
5
100
200 250
Frequency(MHz)
Attenuation VS.Control voltage
0
f=100MHz
20
40
60
80
0
3
6
9
12 15
Control voltage(V)
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