SAF43.75MTA220ZL [MURATA]

SAW Filter, 1 Function(s), 43.75MHz;


型号：	SAF43.75MTA220ZL
厂家：	muRata
描述：	SAW Filter, 1 Function(s), 43.75MHz LTE
文件：	总4页 (文件大小：69K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

This is the PDF file of catalog No.P34E-5.

No.P34E5.pdf 01.3.9

!INTRODUCTION

Murata has continued research on surface acoustic wave

filters since 1970. In 1976 we offered for sale our first

surface acoustic wave filter to be used in the IF of high-

fidelity FM tuners. Then, we successfully developed and

offered for sale the surface acoustic wave filter for the video

IF of color television sets.

Now surface acoustic wave filters have been parts

indispensable to electronic circuits of video equipments and

telecommunication equipments such as TV/VCR.

Murata has successfully put surface wave filters

incorporating ZnO thin film into series. It is realized to be in

resin molded small package (SIP), and stable temperature

characteristics.

¡Application for VIF/SIF circuit of TV/VCR.

Audio AMP

(SFSH4.5MCB)

Video

Amplifier

SIF

Amplifier

SIF

Detector

Video

Detector

UHF/VHF

Tuner

Pre-

AMP

VIF AMP

(CDSH4.5MC-K)

PIF Surface Acoustic Wave Filter

(SAF58MH210Z)

(TPS4.5MB2)

Video

Color

Amplifier

Demodulator

¡Application for CATV convertor.

RF Signal

Input

1st Mixer

2nd Mixer

2nd Amp.

Television

1st Amp.

Local

osc.

Local

osc.

SAW Filter

(SAF61MB210Z)

This is the PDF file of catalog No.P34E-5.

No.P34E5.pdf 01.3.9

!BASIC STRUCTURE

∆f/2 ∆f/2

∆f/2

∆f

∆f/2 ∆f/2 ∆f/2

The basic configuration of a SAW filter is two IDTs (comb

type electrode) on the piezoelectric substrate.

The first IDT connected to the signal source generates a

surface acoustic wave, which propagates along a substrate

surface to the second IDT, which transforms SAW energy

into electrical voltage on a load connected to the IDT.

This is shown in the Fig.-1.

∆f

Frequency

Input

Output

Fig.Y3 Frequency characteristics of the normal IDT

!PART NUMBERING

IDT

(Please specify the part number when ordering)

(Ex.)

SAF 58M

Fig.Y1 Transversal filter

qKind

Frequency characteristics of the IDTs can be calculated by

means of impulse model. In case of Normal IDT which has

a constant pitch and a constant overlap, the IDT and the

corresponding impulse is shown in Fig.-2 below.

SAFYSAW filter

SAFWYDual type SAW filter

SAFCCYChip SAW filter

MKTYHigh frequency trap

wNominal Center Frequency, fp or fs

eType

rPackage

tIndividual Specification

yElement Substrate

λ 0

Bus Bar

Z————ZnO

————PZT

Finger

When Taping type, YTF - is added

IDT

!NOTICE

¡Do not apply DC voltage between the each terminal.

¡Washing filter is not acceptable due to unsealed

construction.

¡Filter might be damaged when an excessive stress was

applied.

Impulse

¡Matching condition should be evaluated well to perform

stable electrical characteristics which are specified.

¡We can not warrant against defects caused by any use of

the filter which deviates from the intended use as described

in this catalog. Please contact us for any other

characteristics, using conditions or application to the device

which need to be extremely reliable.

Fig.Y2 IDT and the corresponding impulse

When a voltage is fed to the IDT, the direction of the voltage

is the positive-negative-positive-negative at λ 0/2 interval.

The voltage is then subjected to expansion and shrinkage of

substrate by the piezoelectric effect. One impulse pair of

adjacent positive and negative polarities is corresponding to

one electrode pair.

When the wavelength of the surface acoustic waves

generated by each impulse is equal to the electrode pitch

λ 0, we get maximum SAW energy.

When wave velocity is V, electrode pitch is λ 0, number of

electrode pair is N, then frequency characteristics of normal

IDT can be calculated by the equations shown below.

sin N π X

N π X

f-f0

λ 0

A( f )

, f0=

[

]

This is the PDF file of catalog No.P34E-5.

No.P34E5.pdf 01.3.9

SURFACE ACOUSTIC WAVE FILTERS

SAW Filter for Digital Equipment

Series

80/200Z

The Best SAW Filter Choice for Digital Equipment

Miniaturizing and Adding Efficiency

!FEATURES

1. Adjustment-free.

2. High performance of top flatness.

3. Very stable phase char.

4. Stable temp. char. and High durability.

(in mm)

!DIMENSIONS

15.0 max.

16.0 max.

Input Mark

0.5±0.1

0.5T0.1

2.5

2.52.5

2.5

Input

2.5

2.52.5

2.5

Input

Input Ground

Ground

Output

Input Ground

Ground

Output

2 3 4 5

Output

2 3 4 5

Output

!SPECIFICATIONS

¡FOR DIGITAL CTV (US)

Nominal

Temperature

Coefficient

[ppm/D]

Insertion

Loss

Spurious

Amplitude Response (dB)

Center

Frequency

(MHz)

Frequency DIMEN-

Response

[dB]min.

Response

[dB]min.

Part Number

Char. SIONS

[dB]max.

39.75MHz 41.35MHz 46.69MHz 47.25MHz

0.7T1.3 1.5T1.5

30.0

28.0

Y22T20 Fig.Y1

44.00

22.0

35.0 min.

25.0 min.

SAF44MTC80ZL

(0.00Y40.00MHz) (48.00Y55.00MHz)

¡FOR DIGITAL CATV (US)

Nominal

Temperature

Insertion

Spurious Spurious

Response Response

[dB]min. [dB]min.

Amplitude Response (dB)

Center

Frequency

(MHz)

Frequency DIMEN-

Char. SIONS

Coefficient

Loss

Part Number

[ppm/D]

[dB]max.

40.00MHz 40.50MHz 41.00MHz 41.47MHz 46.53MHz 47.00MHz 47.50MHz 48.00MHz

30.0

28.0

10.0 min. 34.0 min.

8.0 min. 30.0 min.

3.5T1.5 0.0T1.2 0.0T1.2 3.5T1.5

1.5T1.5 0.0T1.2 0.0T1.2 2.0T1.5

Y28T20 Fig.

44.00

20.5

21.0

32.0 min. 10.0 min.

32.0 min. 7.0 min.

SAF44.00MTD220ZL

SAF44.00MTE220ZL

(35.00Y40.00MHz) (48.00Y55.00MHz)

28.0

25.0

(25.00Y40.00MHz) (48.00Y55.00MHz)

¡FOR DIGITAL CABLE MODEM (US)

Nominal

Insertion

Center

Temperature

Spurious Spurious

Response Response

[dB]min. [dB]min.

Amplitude Response (dB)

Frequency DIMEN-

Char. SIONS

Coefficient

Loss

Part Number

Frequency

(MHz)

[ppm/D]

[dB]max.

47.75MHz

39.75MHz 40.25MHz 40.75MHz 41.22MHz 46.28MHz 46.75MHz 47.25MHz

28.0

1.5T1.5 0.0T1.2 0.0T1.2 2.5T1.5

Y28T20 Fig.Y4

43.75

21.0

34.0 min. 9.0 min.

9.0 min. 34.0 min.

SAF43.75MTA220ZL

(35.00Y39.75MHz) (47.75Y55.00MHz)

This is the PDF file of catalog No.P34E-5.

No.P34E5.pdf 01.3.9

!FREQUENCY CHARACTERISTICS

¡FOR DIGITAL CTV (US)

¡SAF44MTC80ZL

10 dB/div.

2 dB/div.

1900

1700

1500

1300

G.D.T.

34.0

39.0

44.0

49.0

54.0

Frequency (MHz)

Fig.Y1

¡FOR DIGITAL CATV (US)

¡SAF44.00MTD220ZL

¡SAF44.00MTE220ZL

10 dB/div.

2 dB/div.

G.D.T.

2 dB/div.

1400

1200

1000

800

1300

1100

900

G.D.T.

700

34.0

39.0

44.0

Frequency (MHz)

49.0

54.0

34.0

39.0

44.0

Frequency (MHz)

49.0

54.0

Fig.

Fig.Y3

¡FOR DIGITAL CABLE MODEM (US)

¡SAF43.75MTA220ZL

10 dB/div.

2 dB/div.

G.D.T.

1400

1200

1000

800

34.0

39.0

44.0

49.0

54.0

Frequency (MHz)

Fig.Y4

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