EURO
QUARTZ
•
High selectivity type ceramic filters
•
A variety of bandwidths available
•
Easily mounted to PCB
•
Miniature size
LTM-450W CERAMIC FILTER
6 Element
SPECIFICATION
Frequency v. Attenuation Characteristics
2.4 2.6 2.9
3
1
0.9
7.1
2.2
Connections
1
Input
2
Output
3,4,5
Ground
4
2
5
4.3
6.3
6.4
9.5
0
10
20
Attenuation 30
(dB)
40
50
60
70
410 420 430 440 450 460 470 480 490 500
Frequency (kHz)
LTM-450BW
LTM-450EW
LTM-450HW
Actual size
(outline top view)
Outline and Dimensions
ELECTRICAL CHARACTERISTICS
Part
Number
LTM 450BW
LTM 450CW
LTM 450DW
LTM 450EW
LTM 450FW
LTM 450GW
LTM 450HW
LTM 450IW
LTM 450HTW
LTM 450ITW
Centre
Frequency
(kHz)
450±2
450±2
450±1.5
450±1.5
450±1.5
450±1.5
450±1.0
450±1.0
450±1.0
450±1.0
Insertion
Loss
(dB max.)
4
4
4
6
6
6
6
6
6
6
Pass Band
Ripple
(dB max.)
2
2
2
2
2
2
2
2
2
2
6dB
Bandwidth
(kHz min.)
±15
±12.5
±10
±7.5
±6
±4.5
±3
±2
±3
±2
50dB
Bandwidth
(kHz min.)
±30
±24
±20
±15
±12.5
±10
±9
±7.5
±9
±7.5
Stop Band
Att. ±100kHz
(dB min.)
45
45
45
45
45
45
55
55
60
60
Input/Output
Impedance
(
W
)
1500
1500
1500
1500
2000
2000
2000
2000
2000
2000
TEST CIRCUIT
Input 1
R1
RG
LTW
Output 5
2
3
Ground
SSG
4
R2
RF
V.M.
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: sales@euroquartz.co.uk www.euroquartz.co.uk
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