EURO QUARTZ LPU-B, LPZ-JL CERAMIC FILTERS AM - IF 450 to 470kHz SPECIFICATION 3.5 LPU-SERIES 1 LPZ-SERIES 7.5 2 6 9.0 Connections 1 Input 2 Output 3 Ground 2.5 5 7.0 7.0 3.6 4 9.0 2.5 2.5 Connections 1 Input 2, 5 Output 3, 4 Direct Coupled 6 Output 3.5 2.5 3 Outline and Dimensions 3.5 Outline and Dimensions ELECTRICAL CHARACTERISTICS Selectivity -9 kHz off +9 kHz off (dB) min. (dB) min. 3dB Bandwidth (kHz) Part Number LPU455B Insertion Loss (dB) max. Composition 1-±3 5(7.5) 3(5.5) 5(3) 1 Element 5.5±1 18(20) 18(20) 7(3.5) 2 Elements (connected with IFT) LPZ455JL with IFT Direct coupling type Item 1-2 Winding Specifications LPU455B 2-3 4-6 70T 115T Unloaded Qu 7T 105 Tuning Capacity LPZ455JL 2 -3 4 -6 1 -2 68T 84T 14T 90 180pF * * 180pF ( ) = typical values Centre Frequency (fo) is available in the range from 450kHz to 470kHz. The standard tolerance of fo is ±2kHz. For synthesizers and digital indicators a tolerance of ±1kHz is available. The LP455JL series, with its two directly coupled elements, realizes a high degree of selectivity. The series features excellent matching characteristics for IFT. TEST CIRCUIT LPU Series 3 Output Input 1 LPZ Series 3 2 LPU R1 RG 2 Ground R1 R2 SSG RF V.M. SSG RG=50 Ohm LPZ 1 4 5 6 Ground 3k RF V.M. 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