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LTM450BU

ECS
Part Number LTM450BU
Manufacturer ECS
Description 4 ELEMENT CERAMIC FILTER
Published Dec 10, 2013
Detailed Description LTM450U SERIES 4 ELEMENT CERAMIC FILTER Ultra small size high selectivity type ceramic filter for communication use. F...
Datasheet PDF File LTM450BU PDF File

LTM450BU
LTM450BU


Overview
LTM450U SERIES 4 ELEMENT CERAMIC FILTER Ultra small size high selectivity type ceramic filter for communication use.
FEATURES • Ultra small size • 6.
5 mm profile • Bandwidths from 4KHz to 30KHz available • RoHS Compliant (Note 7 exemption) • 4 elements OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS PART NUMBER LTM450BU LTM450CU LTM450DU LTM450EU LTM450FU LTM450GU LTM450HU LTM450IU LTM450HTU LTM450ITU CENTER FREQUENCY (KHz) 450 450 450 450 450 450 450 450 450 450 ±2.
0 ±2.
0 ±1.
5 ±1.
5 ±1.
5 ±1.
0 ±1.
0 ±1.
0 ±1.
0 ±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 6 dB BANDWIDTH (KHz) MIN.
±15 ±12.
5 ±10 ±7.
5 ±6 ±4.
5 ±3 ±2 ±3 ±2 40 dB BANDWIDTH (dB) MAX.
±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 (Ω) 1500 1500 1500 1500 2000 2000 2000 2000 2000 2000 PACKAGE DIMENSIONS (mm) 7 7 INPUT OUTPUT R1 6.
5 1 2 LTMU 3 4 GROUND Rg GROUND R2 S.
S.
G.
4 RF V.
M.
0.
8 Rg+R1=R2=input/output impedance 2.
4 1.
8 0.
8 4.
3 Figure 2) LTM450U – Measuring Circuit 1 2 Connection 1 Input 0 10 LTM455BU LTM455EU 4.
3 2 Output 3 Ground 4 Ground Attenuation (dB) 3 4 20 30 40 50 LTM455HU 2.
4 1.
8 0.
8 Figure 1) LTM450U – Front, Side and Bottom views 60 410 420 430 440 450 460 470 480 490 500 Frequency (KHz) Note: To avoid potential problems, connect the output to an IF amplifier through a DC cut capacitor.
Avoid applying a direct current to output end of the ceramic filters (between ➂ and xy).
Figure 3) LTM4550U – Characteristics ECS, INC.
INTERNATIONAL 1105 S.
RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX 913-782-6991 • WWW.
ECSXTAL.
COM CERAMIC FILTERS 78 CERAMIC FILTERS Free Datasheet http://www.
datasheet4u.
com/ ...


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