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| LTM455W SERIES 6 ELEMENT CERAMIC FILTER Ultra small size high selectivity type ceramic filter for communication use. FEATURES * Ultra small size * 6.3 mm profile * Broad bandwidth * RoHS Compliante (Note 7 exemption) * 6 elements OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS PART NUMBER LTM455BW LTM455CW LTM455DW LTM455EW LTM455FW LTM455GW LTM455HW LTM455IW LTM455HTW LTM455ITW CENTER FREQUENCY (KHz) 455 455 455 455 455 455 455 455 455 455 2.0 2.0 1.5 1.5 1.5 1.5 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 50 dB BANDWIDTH (dB) MAX. 30 24 20 15 12.5 10 9 7.5 9 7.5 STOP BAND ATT. 100KHZ (dB) MIN. 45 45 45 45 45 45 45 45 60 60 INPUT / OUTPUT IMPEDANCE () 1500 1500 1500 1500 2000 2000 2000 2000 2000 2000 PACKAGE DIMENSIONS (mm) 9.5 6.4 1 2 LTM 3 4 5 6.3 Rg RF V.M. R2 S.S.G. 2.2 Rg+R1=R2=input/output impedance 7.1 Connection 3 4 5 1 Input 2 Output Figure 2) LTM455W - Measuring Circuit 4.3 3 Ground 4 Ground 5 Ground 0 10 LTM455BW LTM455EW 1 2 Attenuation (dB) 20 30 40 50 LTM455HW 7.1 2.6 2.9 Figure 1) LTM455W - Front, Side and Bottom views 60 410 420 430 440 450 460 470 480 490 500 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 | and y{). Frequency (KHz) Figure 3) LTM455W - 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 81 CERAMIC FILTERS |
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