EURO QUARTZ LTM-450 U CERAMIC FILTER •High selectivity type ceramic filters •Pass bandwidths from 30kHz to 4MHz •Easily mounted to PCB •Miniature size 4 Element SPECIFICATION Frequency v. Attenuation Characteristics 1 7.0 2 7.0 0 3 4 4.3 6.5 LTM-450BU LTM-450EU LTM-450HU 10 2.4 1.8 0.8 20 Attenuation 30 (dB) 40 4.0 Actual size (outline top view) Connections 1 Input 2 Output 3 Ground 4 Ground 50 60 410 420 430 440 450 460 470 480 490 500 Frequency (kHz) Outline and Dimensions ELECTRICAL CHARACTERISTICS 40dB Bandwidth (kHz min.) Stop Band Att. ±100kHz (dB min.) Input/Output Impedance (W) Part Number Centre Frequency (kHz) Insertion Loss (dB max.) LTM-450BU 450±2.0 4 2 ±15 ±30 27 1500 LTM-450CU 450±2.0 4 2 ±12.5 ±24 27 1500 LTM-450DU 450±1.5 4 2 ±10 ±20 27 1500 LTM-450EU 450±1.5 6 2 ±7.5 ±15 27 1500 LTM-450FU 450±1.5 6 2 ±6 ±12.5 27 2000 LTM-450GU 450±1.0 6 2 ±4.5 ±10 25 2000 LTM-450HU 450±1.0 6 2 ±3 ±9 25 2000 LTM-450IU 450±1.0 6 2 ±2 ±7.5 25 2000 LTM-450HTU 450±1.0 6 2 ±3 ±9 35 2000 LTM-450ITU 450±1.0 6 2 ±2 ±7.5 35 2000 Pass Band Ripple (dB max.) 6dB Bandwidth (kHz min.) ( ) = typical values TEST CIRCUIT Input 1 R1 Output 2 LTMU 3 RG Ground 4 R2 RF V.M. SSG 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: [email protected] www.euroquartz.co.uk