LT10.7MA5AP Datasheet, PDF (3/4 Pages) Token Electronics Industry Co., Ltd. – LT10.7M Ceramic Filters for FM Receiver

TOKEN LT10.7M Ceramic Filters for FM Receiver
Characteristics
LT10.7MA5
0
10
20
30
40
10.3 10.5 10.7 10.9 11.1
Frequency(MHz)
LT10.7MS2
0
10
20
30
40
10.3 10.5 10.7 10.9 11.1
Frequency(MHz)
LT10.7MS3
0
10
20
30
40
10.3 10.5 10.7 10.9 11.1
Frequency(MHz)
Test Circuit
R1 _{① ③}
Rg
②
~ ^S.S.G
R2 _C
RF
V.M
Rg + R1 = R2 = 330 Ω
C = 10pF
Including stray capacitance and input capacitance of RF voltmeter
1. When using ceramic filters, it is most important to match the input/output load to impedance 330 ohm
(LT10.7MA19 is 470 ohm matching). Waveform symmetry is damaged when reactance is added to
the input/output load.
2. Two ceramic filters directly connected can be used for high selectivity. For reducing waveform
variation, it is recommended to input a buffer AMP between ceramic filters.
3. The LT10.7M series are of input/output symmetric structure so that in theory there is no input/output
directionality. Actual circuits may use different input/output loading conditions (for example,
mismatched impedance) or capacitance load. In such cases, the waveform will be a little changed by
the direction of the input/output of the ceramic filters.
Version 2010
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03 of 04