EURO QUARTZ LTU-455 2 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 7.0 2 1 8.0 0 4.3 3 20 2.7 0.8 LTU-450B2 LTU-450D2 LTU-450H2 10 8.2 Attenuation 30 (dB) 40 4.0 Actual size (outline top view) Connections 1 Input 2 Ground 3 Output 50 60 410 420 430 440 450 460 470 480 490 500 Frequency (kHz) Outline and Dimensions ELECTRICAL CHARACTERISTICS Part Number Centre Frequency (kHz) Insertion Loss (dB max.) Pass Band Ripple (dB max.) 6dB Bandwidth (kHz min.) LTU-455B2 455±2.0 4 2 ±15 40dB Bandwidth (kHz min.) ±30 Stop Band Att. ±100kHz (dB min.) 27 Input/Output Impedance (W) 1500 LTU-455C2 455±2.0 4 2 ±12.5 ±24 27 1500 LTU-455D2 455±1.5 4 2 ±10 ±20 27 1500 LTU-455E2 455±1.5 6 2 ±7.5 ±15 27 1500 LTU-455F2 455±1.5 6 2 ±6 ±12.5 27 2000 LTU-455G2 455±1.0 6 2 ±4.5 ±10 25 2000 LTU-455H2 455±1.0 6 2 ±3 ±9 25 2000 LTU-455I2 455±1.0 6 2 ±2 ±7.5 25 2000 LTU-455HT 455±1.0 6 2 ±3 ±9 35 2000 LTU-455IT 455±1.0 6 2 ±2 ±7.5 35 2000 TEST CIRCUIT Input 1 R1 Output 3 LTU 2 RG Ground 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