CDA MC31 User Manual

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430 CG01-I
PIEZO FILTERS
INTRODUCTION
For more than two decades, ceramic
filter technology has been instrumental
in the proliferation of solid state
electronics. A view of the future reveals
that even greater expectations will be
placed on piezoelectric material in the
area of new applications and for more
stringent performance criteria in current
products. Traditionally, nearly all low
and high-end AM and FM commercial
radios use ceramic
band-pass filters.
However, applications
are also found in
cordless telephones,
cellular systems,
2-way communications,
and the
television industry.
As a world leader in the development
of piezo ceramic filter technology,
Murata Electronics had been able to
develop specialized ceramic materials
which when combined with an advance
filter design have resulted in a complete
line of practical, inexpensive ceramic
filters for entertainment and communi-
cations applications. In this catalog,
the principle of ceramic filters, the
design of representative test circuits
and specifications concerning various
models are described.
PIEZOELECTRIC THEORY AS
APPLIED TO CERAMIC FILTERS
All ceramic filters derive their basic
frequency selectivity from a mechanical
vibration resulting from a piezoelectric
effect. While a total theoretical analysis
of piezoelectric technology as applied
to ceramic filters is very complex, it can
be shown as the equivalent circuit
as
illustrated in Fig. 430-1. This equivalent
circuit represents a typical two-terminal
filter, a device which forms the basic
building block for more complex filters.
The resonant frequency of this device
is calculated by the equation:
The anti-resonant frequency is
expressed as:
This filter exhibits the impedance
shown in Fig. 430-2.
Two-terminal filters are typically used
as emitter bypasses and they exhibit
the frequency characteristics shown
in Fig. 430-3.
Three-terminal ceramic filters can be
used as inter-stage coupling devices as
shown in Fig. 430-4. By using our filters
in this manner, increased selectivity,
improved band pass characteristics,
reliability and stability can be obtained
without increasing circuit complexity
or parts count.
By cascading two or more filters as
shown in Figs. 431-5 and 6, Murata
can greatly enhance selectivity.
By controlling the coefficient of
electromechanical coupling between
the filter elements, bandwidth can
be
“peaked”
or “flattened.” Typical
455kHz response curves are shown
in Figs. 431-7 and 8.
f
r
=
1
2π
L
1
C
1
f
a
=
1
2π
L
1
C
1
C
0
C
1
+C
0
L
1
C
0
C
1
R
1
C
0
: Parallel Capacitance
R
1
: Series Resistance
L
1
: Series Inductance
C
1
: Series Capacitance
Fig. 430-1
Two-Terminal Type
Equivalent Circuit
Attenuation (dB)
0
10
20
430 440 450 460 470 480
Frequency (kHz)
Fig. 430-3
Typical Attenuation Characteristics
For A 455kHz (Two-Terminal)
Ceramic Filter
Fig. 430-4
Three-Terminal
Filter Used As Inter-Stage
Coupling Device
From
Preceding
Stage
SFU455
To Next
Stage
3K
BFU
455
V
CC
3K
BFU
455
Impedance (k)
100
10
1
0.1
0.01
440 460 480 500 520
Frequency (kHz)
Fig. 430-2
Typical Impedance vs
Frequency Response Curve For
A Two-Terminal Device
455
f
r
f
a
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Summary of Contents

Page 1 - INTRODUCTION

430 CG01-IPIEZO FILTERSINTRODUCTIONFor more than two decades, ceramicfilter technology has been instrumentalin the proliferation of solid stateelectro

Page 2

CG01-I 439PIEZO FILTERSMULTI-ELEMENT, RESIN MOLDED,G.D.T. FLAT TYPECFWSY 455kHz6dB Bandwidth 50dB Bandwidth Insertion LossAttenuation atGroup Delay T

Page 3

6dB Bandwidth40dB Attenuation atInsertion Loss Group Delay Time Input/OutputPart Number(kHz) min.Bandwidth 455 ± 100kHz(dB) max. sec. max. (kHz) Imped

Page 4

Nominal3dB 6dB 50dBSpuriousInsertion G.D.T. Input/OutputPart NumberCenterBandwidth Bandwidth BandwidthResponseLossRippleDeviation ImpedanceFrequency(k

Page 5

Center Frequency Bandwidth (Total) Ripple (max.)*Insertion Stop BandGroup Delay (max.)Source__________________________________________________________

Page 6 - CFWS 455kHz

PIEZO FILTERSSURFACE MOUNTED CHIP PIEZOELECTRIC CERAMIC FILTERSFOR AM APPLICATIONS SFGCG, SFPC, CFUCG, CFWC 455kHzCG01-I 443CHARACTERISTICS (TYP.)PAD

Page 7 - CFUM/CFWM 455kHz

Recovered Audio DistortionPart Number/3dB Bandwidth Output (at 455kHz) withinIC ApplicationCharacteristics(from 544kHz) min. (at 455kHz) max. 455 ± 8k

Page 8

Recovered Audio DistortionPart Number/3dB Bandwidth Output (at 455kHz) withinIC ApplicationCharacteristics(from 455kHz) min. (at 455kHz) max. 455 ± 8k

Page 9 - MULTI-ELEMENT

PIEZO FILTERSHIGH PERFORMANCE CERAMIC DISCRIMINATORSFOR MOBILE COMMUNICATION EQUIPMENT CDB/CDBC/CDBM 455kHz446 CG01-IDIMENSIONS: mmPLASTIC TAPE DIMENS

Page 10 - Y 455kHz

Part Number Center Freq. (MHz) 3dB Bandwidth (kHz) Insertion Loss (dB max.) Terminal Impedance (Ohms)SFE10.7MFP1 10.7 (Nominal) Fn ±5 min. Fn ±35 m

Page 11 - Y/CFWMY 455kHz

448 CG01-IPIEZO FILTERSCERAMIC FILTERS FOR AM APPLICATIONSSFU/SFZ/450/455kHzThe following filters were designed to address the needs of standard AM fi

Page 12 - SPECIFICATIONS CFUXC 450kHz

Fig. 431-6 Fig. 431-7 Fig. 431-8Cascade Connection Typical Response Curves For Typical Response Curves ForCFR455 A-E Series Ceramic Filters CFR455 F-I

Page 13 - SPECIFICATIONS

PIEZO FILTERSCERAMIC FILTERSMHz SERIESCG01-I 449Murata Electronics’ MHz series of ceramic filters are monolithic devices which utilize the energy-trap

Page 14 - PLASTIC TAPE DIMENSIONS: mm

Part Number3dB Bandwidth 20dB Bandwidth Ripple Insertion Loss Spurious (9 ~ 12MHz)(kHz) (kHz) max. (dB) max. (dB) max. (dB) min.SFE10.7MA5-A 280 ± 50

Page 15 - FEATURES

Part Number3dB Bandwidth 20dB Bandwidth Insertion Loss Spurious (9~12MHz) Ripple w/n 3dB G.D.T. Bandwidth(kHz) (kHz) max. (dB) max. (dB) min. Bandwid

Page 16

3dB Bandwidth 20dB BandwidthRipple Insertion Loss Spurious (9 ~ 12MHz)Part Number(kHz) (kHz) max.Within 3dB(dB) max. (dB) min.Bandwidth (dB)WideSFE10.

Page 17 - DIMENSIONS: mm

3dB Bandwidth 40dB BandwidthRipple Insertion Loss Spurious AttenuationPart Number(kHz) (kHz) max.within 3dB(dB) max. (9 to 12MHz) (dB) min.Bandwidth

Page 18 - SPECIFICATIONS BFU 450/455

Nominal Center 3dB Bandwidth 20dB Bandwidth Insertion LossRipple Spurious Response Withstanding InsulationFrequency (fn) (kHz) min. (kHz) max. (dB) ma

Page 19 - SFU/SFZ/450/455kHz

CG01-I 455Item Code Dimensions (mm) NoteAdhered Terminal LengthL13 min.L22.0 max. Pay attention to directivityPitch of Component P 12.7 ± 0.5Pitch of

Page 20 - MHz SERIES

Part Nominal Center 3dB Bandwidth Spurious Insertion Loss at Input/OutputNumber Frequency (fn) (MHz)* from fn (kHz) Attenuation min. fn (dB) max. Impe

Page 21 - FREQUENCY CHARACTERISTICS

Part Number IC Mfg. IC NumberCDA10.7MG1-A Sony CX-20029/CX-20111CDA10.7MG2-A Sony CX-831CDA10.7MG4-A Rohm BA4234LCDA10.7MG6-A Toshiba TA7640APCDA10.7M

Page 22

458 CG01-IPIEZO FILTERSCERAMIC DISCRIMINATORSFOR FM DEMODULATION RECEIVERSCDACV 10.7MHzLEADED DIMENSIONS: mm TYPICAL CIRCUITCDA TYPESURFACE MOUNT DIME

Page 23

432 CG01-IPIEZO FILTERSINTRODUCTIONCERAMIC FILTERTERMINOLOGYAlthough the previous section haspresented a concise discussion ofpiezoelectric theory as

Page 24

CG01-I 459PIEZO FILTERSCERAMIC FILTERSHIGHLY ACCURATE TV/VCR TYPE SFSH 4.5 – 6.5MHzThe SFSH lines of ceramic filters are high quality devicesdesigned

Page 25

Part NumberNominal Center Attenuation 20dB Attenuation Spurious ResponseFrequency (fn) at fn (dB) min. Bandwidth (kHz) min. (0 to fn) (dB) max.TPS3.

Page 26

CG01-I 461PIEZO FILTERSCERAMIC DISCRIMINATORSFOR QUADRATURE DETECTION CDA MC/ME 4.5 – 6.5MHzThe CDA MC/ME lines of ceramic discriminators are ICdepend

Page 27

462 CG01-IPIEZO FILTERSSAW FILTERS FOR AUDIO VISUAL EQUIPMENTCOLOR TV/VCR SIFSAF SeriesThis series of saw filters is designed for TV/VCR applications.

Page 28 - CDA 10.7MHz

CG01-I 463PIEZO FILTERSSAW FILTERS FOR AUDIO VISUAL EQUIPMENTMULTI TV/VCR SIF SAF SeriesThis series of saw filters is designed for TV/VCR applications

Page 29 -  

464 CG01-IPIEZO FILTERSSAW FILTERS FOR AUDIO VISUAL EQUIPMENTMULTI TV/VCR/VIF SAF SeriesThis series of saw filters is designed for TV/VCR applications

Page 30

CG01-I 465PIEZO FILTERSSAW FILTERSFOR AUDIO VISUAL EQUIPMENTSAF SeriesThis series of saw filters is designed for TV/VCR applications. These filters ar

Page 31 - CERAMIC TRAPS

466 CG01-IPIEZO FILTERSSAW FILTERS FOR AUDIO VISUAL EQUIPMENTCOLOR TV VIF/VCR SAF SeriesThis series of saw filters are designed for TV/VCR application

Page 32 - CG01-I 461

PIEZO FILTERSSAW FILTERSFOR SET TOP BOX (CATV)SAF SeriesThis series of saw filters is designed for TV/VCR applications. These filters are capable of p

Page 33

468 CG01-IPIEZO FILTERSSAW FILTERSFOR SET TOP BOX (CATV)SAF SeriesThis series of saw filters is designed for TV/VCR applications. These filters are ca

Page 34 - (fs2) Carrier

CG01-I 433PIEZO FILTERSINTRODUCTIONOn the other hand, if R1and R2areconnected to higher values other than those specified, the insertion loss will inc

Page 35 - 2.5 2.5 2.5

Part Number SAF44MTC80ZL SAF44.00MTD220ZL SAF44.00MTE220ZLInsertion Loss(at 44.00 MHz)22.0dB 20.5dB 21.0dB39.75MHZ 35.0 min. — —40.00MHZ — 32.0 min. 3

Page 36

470 CG01-IPIEZO FILTERSSAW FILTERS FOR AUDIO VISUAL EQUIPMENTTAPING DIMENSIONS SAF SeriesSPECIFICATIONSPart NumberSAF M80Z-TF/SAF M200Z-TF SAF M80Z

Page 37 - COLOR TV VIF/VCR SAF Series

CG01-I 471PIEZO FILTERSHIGH FREQUENCY TRAP FOR TV/VCR APPLICATIONS MKT SeriesMKT is a high frequency trap for television or other similar systems.SPEC

Page 38 - 2.52.52.52.5

434 CG01-ICERAMIC FILTERS DO NOT PASS DCIt is important to note in designingcircuits that ceramic filters areincapable of passing DC. As isillustrated

Page 39

Attenuation Input/OutputPart NumberNominal Center 6dB Bandwidth 40dB Bandwidth455±100kHzRipple Insertion LossImpedanceFrequency (kHz) (kHz) min. (kHz)

Page 40

AttenuationPart NumberNominal Center 6dB Bandwidth 40dB Bandwidth455±100kHzInsertion Loss Input/OutputFrequency (kHz) (kHz) min. (kHz) max.(dB) min.(d

Page 41 - TAPING DIMENSIONS SAF Series

Nominal Center 3dB 6dB Ripple 60dBAttenuationSpuriousInsertion Loss Input/OutputPart Number Frequency Bandwidth Bandwidth (dB) Bandwidth(dB) min.Respo

Page 42 - PART NUMBER LIST

SPECIFICATIONS CFM/CFJ/CFR/CFS/CFL 455kHz438 CG01-IPIEZO FILTERSMULTI-ELEMENTHIGH PERFORMANCE CFM/CFJ/CFR/CFS/CFL 455kHzThe following lines of filters

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