CDA MC31 Manuale Utente Pagina 2

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Fig. 431-6 Fig. 431-7 Fig. 431-8
Cascade Connection Typical Response Curves For Typical Response Curves For
CFR455 A-E Series Ceramic Filters CFR455 F-I Series Ceramic Filters
Fig. 431-9
Graphical Representation of Ceramic Filter Terminology
PIEZO FILTERS
INTRODUCTION
Series Resonator
Parallel Resonator
Input Output
Cc
Ground
Fig. 431-5
Ladder Connection
0
10
20
30
40
50
60
70
420 430 440 450 460 470 480 490
Frequency (kHz)
CFR455A
CFR455B
CFR455C
CFR455D
CFR455E
0
10
20
30
40
50
60
70
420 430 440 450 460 470 480 490
Frequency (kHz)
CFR455F
CFR455G
CFR455H
CFR455I
Attenuation (dB)
Attenuation (dB)
input level
F
o
insertion loss
ripple
spurious
response
F
LF
H
F
L-F
L
dB bandwidth
F
3
H-F
3
L
3dB bandwidth
F
3
LF
3
H
3dB
XdB
Low
Frequency (Hz)
High
Attenuation (dB)
0dB
CG01-I 431
PIEZO FILTERS
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