B
O
WEI
Features
Digitally tuned
Hopping filter
LBM017A-85~LBM700A-85
Digitally tuned Hopping filter
Frequency range
：
30~700MHz
BOWEI INTEGRATED CIRCUITS CO.,LTD.
Tuning Control: 8 bit parallel（TTL Level compatible）
Wide dynamic
：Input
P
-1
=30dBm
2 ploe 0.1dB Chebyshev Response
Tuned speed
≤10us(f
c
>30MHz)
Up to 250 steps(Fc<120MHz) in band.
Typical
2~3
octave
bandwidth
coverage
within
Selection Guide：
LBM017A-85(40~110MHz), LBM037A-85(30~90MHz),
LBM038A-85(30~110MHz), LBM039A-85(90~200MHz),
LBM040A-85(200~400MHz),LBM041A-85(225~450MHz)
LBM041A512-85(225~512MHz),
LBM700A-85(400~700MHz)
30~700MHz
High bias voltage low bias current (100V/1.5mA)
Package : Pins or SMA connector
Small DIP package
Operating Temperature range：-40℃~+85℃
Specification
Electrical
Parameters
% 3dB Bandwidth
Fractional BW flatness
1)
I.L at center frequency
2)
I.L variance
3)
Shape Factor (BW
30
/BW
3
)
Impedance
VSWR
Input P
-1 4)
DC power:
3½10%
≤1%
2~6dB
≤2dB
≤7:1
50Ω
2.0:1max
+30dBm(TYP)
+5V/90mA
V
bb
:+15~100V/1.5mA
LBM017A-85
Note:
1) This is the difference of % 3dB bandwidth within the frequency band, see Page
56
for typical curves
2) Insertion loss at center frequency is typical one, the wider passband the lower IL. Following method is used to
calculate insertion loss：IL ×BW
3dB
%=20~25, For example % BW is 5% then IL is 4~5dB
3) See typical curves on page
56
4) Decided by the bias voltage, refer to the
“Input
P
-1
--- Bias voltage”typical curve on page
55
Environmental
Vibration(5½2000Hz)
Shock(11 mSec)
Relative HUmidity
Standard
10G
30G
0~90%
Special
20G
50G
95%
Operating Temp
Storage Temp
Standard
-40~+60℃
-40~+100℃
Special
-40~+85℃
-55~+125℃
●TEL:+86-311-87091891
87091887
●
FAX:+86-311-87091282
●
http://www.cn-bowei.com
●
E-mail:cjian@cn-bowei.com
54
LBM017A-85~LBM700A-85 Digitally tuned Hopping filter
BOWEI
Dimension and Pinout
LBM017A-85~LBM700A-85 have a same outline and pinout as LBM034A~LBM700A
LBM017A-85~LBM700A-85 V
bb
=15~100V。
Note:
A
0
~A
7
are 8 control bit lines. Tune words from 00000000 to 11111010 results in the tuned frequency from lowest to
highest
Tuneword =
⎛
f
desired
−
f
low
⎞
⎜
⎟
⎜
f
−
f
⎟
low
⎠
⎝
high
×250
(Note: It will be 200 for LBM039A-85~LBM700A-85)
Example：The tuneword of LBM037A-85 at f
c
=50MHz is：
Tuneword =
⎛
⎜
50
−
30
⎞
×250=83D=53H
⎟
⎝
90
−
30
⎠
Notes
The accuracy of tune words is assured only with V
bb
=85V which is the case of manufacture. A low V
bb
can cause errors of tune
words so that you must declare to the factory of the exact V
bb
used to adjust the errors before delivery.
1）
The Input P
-1
decided by the bias voltage, refer to the
“Input
P
-1
－Bias
voltage”typical curve on
this page
2）
Replacement alternative for MICRO-POLE series of POLE/ZERO
3）
Zero DC resistance at both I/O port, additional DC blocking capacitance needed if necessary
Typical Curves
Input power (P
-1
) via V
bb
LBM017A -85(40-110MHz)
35
Input power(dBm)
LBM037A-85 (30-90MHz)
35
Input power(dBm)
30
25
20
15
10
15
Hz
0M
f=4
Hz
0M
f =6
Hz
0M
1
f= 1
30
25
20
15
10
15
Hz
0M
f= 3
Hz
60M
f=
Hz
0M
f= 9
30
45
60
85
100
30
45
60
85
100
Bias Voltage (V)
LBM039A -85(90-200MHz)
35
Input power(dBm)
Input power(dBm)
35
30
25
20
15
10
15
00M
f=2
Bias Voltage (V)
LBM040A-85 (200-400MHz)
30
25
20
15
10
15
MHz
f=90
Hz
Hz
50M
f=1
Hz
200M
f=
Hz
0M
0
f=3
Hz
00M
f=4
30
45
60
85
100
30
45
60
85
100
Bias Voltage (V)
Bias Voltage (V)
●TEL:+86-311-87091891
87091887
●
FAX:+86-311-87091282
●
http://www.cn-bowei.com
●
E-mail:cjian@cn-bowei.com
55
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