EUROQUARTZ LTM-450HU Ceramic filter Datasheet

EURO QUARTZ
LTM-450 U CERAMIC FILTER
•High selectivity type ceramic filters
•Pass bandwidths from 30kHz to 4MHz
•Easily mounted to PCB
•Miniature size
4 Element
SPECIFICATION
Frequency v. Attenuation Characteristics
1
7.0
2
7.0
0
3 4 4.3
6.5
LTM-450BU
LTM-450EU
LTM-450HU
10
2.4 1.8 0.8
20
Attenuation 30
(dB)
40
4.0
Actual size
(outline top view)
Connections
1
Input
2
Output
3
Ground
4
Ground
50
60
410 420 430 440 450 460 470 480 490 500
Frequency (kHz)
Outline and Dimensions
ELECTRICAL CHARACTERISTICS
40dB
Bandwidth
(kHz min.)
Stop Band
Att. ±100kHz
(dB min.)
Input/Output
Impedance
(W)
Part
Number
Centre
Frequency
(kHz)
Insertion
Loss
(dB max.)
LTM-450BU
450±2.0
4
2
±15
±30
27
1500
LTM-450CU
450±2.0
4
2
±12.5
±24
27
1500
LTM-450DU
450±1.5
4
2
±10
±20
27
1500
LTM-450EU
450±1.5
6
2
±7.5
±15
27
1500
LTM-450FU
450±1.5
6
2
±6
±12.5
27
2000
LTM-450GU
450±1.0
6
2
±4.5
±10
25
2000
LTM-450HU
450±1.0
6
2
±3
±9
25
2000
LTM-450IU
450±1.0
6
2
±2
±7.5
25
2000
LTM-450HTU
450±1.0
6
2
±3
±9
35
2000
LTM-450ITU
450±1.0
6
2
±2
±7.5
35
2000
Pass Band
Ripple
(dB max.)
6dB
Bandwidth
(kHz min.)
( ) = typical values
TEST CIRCUIT
Input 1
R1
Output 2
LTMU
3
RG
Ground
4
R2
RF
V.M.
SSG
RG+R1=R2=Input/Output Impedance
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: [email protected] www.euroquartz.co.uk
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