BOWEI HE742

HE742
B O WEI
2-Bit Digital step Attenuators
BOWEI INTEGRATED CIRCUITS CO.,LTD.
Typical Performance
Insertion Loss VS. Frequency
Features
Ta=+85℃
Ta=+25℃
Ta=-55℃
0
I . L(dB)
attenuation:10dB~40dB
●Frequency Range:20~1350MHz
●Thin film coustraction
●Hermetic package SP-2
●Operating temperature range :-55℃~+85℃
●Castom
-1
-2
Specifications( measured in a 50Ωsystem ,Vcc=±5V, TA=-55℃~+85℃)
Frequency Range
Insertion loss
Steps
Attenuation Range
Attenuation Accuracy
VSWR
Symbol
fL~fH
I.L
Unit
MHz
dB
Typical
Guaranteed
20~1350
Isolation VS. Frequency
-4
15~1350
2.0
-8
1.8
Att
dB
10
–
A
–
dB
30.0
dB
–
±1
–
±0.5
VSWR
Frequency(MHz)
Control voltage
–
–
TTL
–
Control Current
Icc
mA
–
40
-16
20dB
-20
-24
-28
1.5:1
2.0:1
10dB
-12
VSWR
Parameter
1350
750
15
30dB
-32
750
15
1350
Frequency(MHz)
Absolute Maximum Ratings
DC Supply: +6VDC
Input Power:+20dBm
Storage Temp:+125℃
8
1
SP-2
Attenuation(dB)
Attenuation VS. Frequency
2.2
衰减状态
插损状态
1.8
1.4
1.0
15
Application Notes
750
1350
Frequency(MHz)
1 . Specificed frequency rang, attenuation
packages are available
2 . Interexchangable input
and output ports
HEXXX
3 . Logic 0:Insertion Loss
Logic 1:Attenuation
4 . Custom attenuation is available
5 .See assembly section for mounting method
6.ESD observe handing precautions
PIN Connection
PIN Function
1
2
3
4
PIN
Function
20dB
5
Input
-5V
6
N/C
+5V
7
8
N/C
10dB
Output
7.Please add power first when use,make sure control port contact with low level
● TEL:+86-311-87091891 87091887 ● FAX:+86-311-87091282 ● http://www.cn-bowei.com ● E-mail:cjian@cn-bowei.com
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