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LTM450ITU Datasheet(PDF) 1 Page - ECS, Inc. |
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LTM450ITU Datasheet(HTML) 1 Page - ECS, Inc. |
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1 / 1 page 78 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 PACKAGE DIMENSIONS (mm) OPERATING CONDITIONS/ELECTRICAL 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 CERAMIC FILTERS 2.4 1.8 0.8 7 7 4.3 0.8 4 3 2 1 Connection Input Ground Output Ground 3 4 2 1 2.4 1.8 0.8 Figure 1) LTM450U – Front, Side and Bottom views R1 Rg GROUND GROUND INPUT OUTPUT Rg+R1=R2=input/output impedance S.S.G. LTMU RF V.M. R2 1 2 3 4 Figure 2) LTM450U – Measuring Circuit Frequency (KHz) 0 10 20 30 40 50 60 410 420 430 440 450 460 470 480 490 500 LTM455BU LTM455EU LTM455HU Figure 3) LTM4550U – Characteristics CENTER INSERTION PASS BAND 6 dB 40 dB STOP BAND ATT. INPUT / OUTPUT PART NUMBER FREQUENCY LOSS RIPPLE BANDWIDTH BANDWIDTH ±100KHZ IMPEDANCE (KHz) (dB) MAX. (dB) MAX. (KHz) MIN. (dB) MAX. (dB) MIN. ( Ω) LTM450BU 450 ±2.0 4 2 ±15 ±30 27 1500 LTM450CU 450 ±2.0 4 2 ±12.5 ±24 27 1500 LTM450DU 450 ±1.5 4 2 ±10 ±20 27 1500 LTM450EU 450 ±1.5 6 2 ±7.5 ±15 27 1500 LTM450FU 450 ±1.5 6 2 ±6 ±12.5 27 2000 LTM450GU 450 ±1.0 6 2 ±4.5 ±10 25 2000 LTM450HU 450 ±1.0 6 2 ±3 ±9 25 2000 LTM450IU 450 ±1.0 6 2 ±2 ±7.5 25 2000 LTM450HTU 450 ±1.0 6 2 ±3 ±9 35 2000 LTM450ITU 450 ±1.0 6 2 ±2 ±7.5 35 2000 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). |
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