LTM-455U Datasheet, PDF (1/1 Pages) EUROQUARTZ limited – CERAMIC FILTER

EURO QUARTZ
•High selectivity type ceramic filters
•Pass bandwidths from 30kHz to 4MHz
•Easily mounted to PCB
•Miniature size
LTM-455 U CERAMIC FILTER
4 Element
SPECIFICATION
12
3 4 ^4.3
2.4 1.8 _0.8
Actual size
(outline top view)
7.0 7.0
6.5
4.0
Connections
1 Input
2 Output
3 Ground
4 Ground
Frequency v. Attenuation Characteristics
0
LT M-455 BU
10
LT M-455 EU
20
LTM-455HU
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 Insertion Pass Band
6dB
Frequency Loss
Ripple Bandwidth
(kHz) (dB max.) (dB max.) (kHz min.)
40dB
Bandwidth
(kHz min.)
Stop Band
Att. ±100kHz
(dB min.)
Input/Output
Impedance
(W)
LTM-455BU
455±2.0
4
2
LTM-455CU
455±2.0
4
2
LTM-455DU 455±1.5
4
2
LTM-455EU
455±1.5
6
2
LTM-450FU
455±1.5
6
2
LTM-450GU 455±1.0
6
2
LTM-450HU 455±1.0
6
2
LTM-450IU
455±1.0
6
2
LTM-450HTU 455±1.0
6
2
LTM-450ITU 455±1.0
6
2
TEST CIRCUIT
Input 1
R1
LT MU
34
RG
Ground
Output 2
R2
RF
V .M.
SSG
±15
±12.5
±10
±7.5
±6
±4.5
±3
±2
±3
±2
±30
±24
±20
±15
±12.5
±10
±9
±7.5
±9
±7.5
27
1500
27
1500
27
1500
27
1500
27
2000
25
2000
25
2000
25
2000
35
2000
35
2000
( ) = typical values
RG+R1=R2=Input/Output Impedance
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: [phone] Fax: [phone] Email: [e-mail] www.euroquartz.co.uk