EURO
QUARTZ
•
High selectivity type ceramic filters
•
Pass bandwidths from 30kHz to 4MHz
•
Easily mounted to PCB
•
Miniature size
LTU-455 2 CERAMIC FILTER
4 Element
SPECIFICATION
Frequency v. Attenuation Characteristics
2 1
3
0.8
4.3
2.7
4.0
Actual size
(outline top view)
Connections
1
Input
2
Ground
3
Output
7.0
8.0
0
LTU-450B2
LTU-450D2
LTU-450H2
8.2
10
20
Attenuation 30
(dB)
40
50
60
410 420 430 440 450 460 470 480 490 500
Frequency (kHz)
Outline and Dimensions
ELECTRICAL CHARACTERISTICS
Part
Number
Centre
Frequency
(kHz)
455±2.0
455±2.0
455±1.5
455±1.5
455±1.5
455±1.0
455±1.0
455±1.0
455±1.0
455±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
40dB
Bandwidth
(kHz min.)
±30
±24
±20
±15
±12.5
±10
±9
±7.5
±9
±7.5
Stop Band
Att. ±100kHz
(dB min.)
27
27
27
27
27
25
25
25
35
35
Input/Output
Impedance
(
W
)
1500
1500
1500
1500
2000
2000
2000
2000
2000
2000
LTU-455B2
LTU-455C2
LTU-455D2
LTU-455E2
LTU-455F2
LTU-455G2
LTU-455H2
LTU-455I2
LTU-455HT
LTU-455IT
TEST CIRCUIT
Input 1
R1
RG
LTU
Output 3
2
Ground
SSG
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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