Monolithic crystal filter MQF21.4-1200/18 Application • 8 pol filter • i.f.- filter • use in mobile and stationary transceivers Unit Value MHz dB kHz dB dB dB dB 21.4 ≤ 3.0 ± 6.00 ≤ 2.0 ≥ 65 > 90 > 65 Terminating impedance Z R1 || C1 R2 || C2 Ohm/pF Ohm/pF 1200 || 2.5 1200 || 2.5 Operating temp. range °C -20... +70 Limiting values Center frequency Insertion loss Pass band at 3.0 dB Ripple in pass band Stop band attenuation Alternate attenuation Characterstics Pass band fo fo fo fo fo ± 4.00 kHz ± 14 kHz ± 20 kHz ± 20...300 kHz MQF21.4-1200/18 Stop band Pin connections: 1 2 3 4 Input Input-E Output Output-E TELE FILTER Zweigniederlassung der DOVER EUROPE GMBH 08.02.00 Potsdamer Str. 18 D- 14513 Teltow ! (+49)03328-4784-10 ; Fax (+49)03328-4784-30 http:\\www.telefilter.com