BOWEI HE741

HE741
B O WEI
1-Bit Digital step Attenuators
BOWEI INTEGRATED CIRCUITS CO.,LTD.
Typical Performance
Insertion Loss VS .Frequency
I . L(dB)
-55℃
+25℃
2.6
+85℃
Features
0
-1
-2
●Accurate
attenuation
●Frequency Range:15~1350MHz
●Hermetic package TO-8E
●Operating temperature range : -55℃ ~+85℃
-3
15
Typical
Guaranteed
Frequency Range
fL~fH
MHz
Insertion loss
I.L
dB
1.8
1.3
Attenuation(Max)
AMax
dB
20.0
20.0
–
±0.5
±0.3
VSWR
dB
–
2.0:1
1.5:1
V co
–
TTL
–
Attenuation Accuracy
VSWR
Control voltage
Switching speed
T on
t
DC
IC
current
us
mA
–
15~1350
2.0( T on )
1.5( T on )
2.0( T off )
1.5(T off )
25
–
“ △ ” Measured at TC=24±1℃
Absolute Maximum Ratings
DC Supply: ±6VDC
Input Power:+20dBm
Storage Temp:+125℃
6
5
1
4
VSWRo
2.0
2
3
TO - 8E
VSWRi
1.8
VSWR
Unit
1.6
1.4
1.2
1.0
15
750
1500
Frequency(MHz)
Attenuation VS. Frequency
Attenuation(dB)
Symbol
1500
VSWR VS .Frequency
Specifications( measured in a 50Ωsystem ,Vcc=±5V, TA=-55℃~+85℃)
Parameter
750
Frequency(MHz)
16
-55℃
+25℃
2.6
+85℃
18
20
22
15
750
1500
Frequency(MHz)
Application Notes
1 . Specificed frequency rang, attenuation
packages are available
3 . Logic 0:Insertion Loss ;
Logic 1:Attenuation
2 . Interexchangable input and output ports
HEXXX
4. See assembly section for mounting method
5. Custom attenuation (3. 0~32. 0dB) is available
6.ESD observe handing precautions
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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