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 Vbb=15~100V。
Note: A0~A7 are 8 control bit lines. Tune words from 00000000 to 11111010 results in the tuned frequency from lowest to
highest
⎛
⎜
⎜
⎝
⎞
⎟
⎟
⎠
fdesired − flow
fhigh − flow
Tuneword =
×250 (Note: It will be 200 for LBM039A-85~LBM700A-85)
Example：The tuneword of LBM037A-85 at fc=50MHz is：
50 − 30
90 − 30
⎛
⎜
⎞
⎟
Tuneword =
×250=83D=53H
⎝
⎠
Notes
The accuracy of tune words is assured only with Vbb=85V which is the case of manufacture. A low Vbb can cause errors of tune
words so that you must declare to the factory of the exact Vbb 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 Vbb
LBM017A -85(40-110MHz)
LBM037A-85 (30-90MHz)
35
30
35
30
25
20
25
20
15
10
15
10
30
45
60
15
85
100
30
45
60
15
85
100
Bias Voltage (V)
Bias Voltage (V)
LBM039A -85(90-200MHz)
LBM040A-85 (200-400MHz)
35
30
25
35
30
25
20
20
15
10
15
10
30
45
60
15
85
100
30
45
60
15
85 100
Bias Voltage (V)
Bias Voltage (V)
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