LTM-450EU

EURO QUARTZ •High selectivity type ceramic filters •Pass bandwidths from 30kHz to 4MHz •Easily mounted to PCB •Miniature size LTM-450 U CERAMIC FILTER 4 Element SPECIFICATION Frequency v. Attenuation Characteristics 1 2 3 4 4.3 2.4 1.8 0.8 4.0 Connections 1 Input 2 Output 3 Ground 4 Ground 7.0 7.0 0 6.5 10 20 Attenuation 30 (dB) 40 50 60 LTM-450BU LTM-450EU LTM-450HU Actual size (outline top view) 410 420 430 440 450 460 470 480 490 500 Frequency (kHz) Outline and Dimensions ELECTRICAL CHARACTERISTICS Part Number Centre Frequency (kHz) 450±2.0 450±2.0 450±1.5 450±1.5 450±1.5 450±1.0 450±1.0 450±1.0 450±1.0 450±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 6dB Bandwidth (kHz min.) ±15 ±12.5 ±10 ±7.5 ±6 ±4.5 ±3 ±2 ±3 ±2 40dB Bandwidth (kHz min.) ±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 (W) 1500 1500 1500 1500 2000 2000 2000 2000 2000 2000 LTM-450BU LTM-450CU LTM-450DU LTM-450EU LTM-450FU LTM-450GU LTM-450HU LTM-450IU LTM-450HTU LTM-450ITU ( ) = typical values TEST CIRCUIT Input 1 R1 RG LTMU Output 2 3 Ground SSG 4 R2 RF V.M. RG+R1=R2=Input/Output Impedance EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE Tel: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: sales@euroquartz.co.uk www.euroquartz.co.uk