LTM-450 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
SPECIFICATION
12
3 4 ^4.3
2.4 1.8 _0.8
7.0 7.0
6.5
Actual size
(outline top view)
4.0
Connections
1 Input
2 Output
3 Ground
4 Ground
Outline and Dimensions
LTM-450 U CERAMIC FILTER
4 Element
Frequency v. Attenuation Characteristics
0
LT M-450 BU
10
LT M-450 EU
20
LTM-450HU
Attenuation ³⁰
(dB) ₄₀
50
60
410 420 430 440 450 460 470 480 490 ₅₀₀
Frequency (kHz)
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-450BU
450±2.0
4
2
LTM-450CU
450±2.0
4
2
LTM-450DU 450±1.5
4
2
LTM-450EU
450±1.5
6
2
LTM-450FU
450±1.5
6
2
LTM-450GU 450±1.0
6
2
LTM-450HU 450±1.0
6
2
LTM-450IU
450±1.0
6
2
LTM-450HTU 450±1.0
6
2
LTM-450ITU 450±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