Monolithic crystal filter MQF21.4-1800/10 Application • 2 pol filter • i.f.- filter • use in mobile and stationary transceivers Characterstics Pass band Unit Value MHz dB kHz dB dB dB 21.4 ≤ 2.0 ± 9.00 ≤ 1.0 ≥ 15 > 30 Terminating impedance Z R1 || C1 R2 || C2 Ohm/pF Ohm/pF 2100 || 2 2100 || 2 Operating temp. range Storage temp. range °C °C -20... +70 -55... +85 Limiting values Center frequency Insertion loss Pass band at 3.0 dB Ripple in pass band Stop band attenuation Alternate attenuation fo fo ± 5.00 kHz fo ± 26 kHz fo ± 450 kHz MQF21.4-1800/10 Stop band Pin connections: 1 2 3 4 Input Input-E Output Output-E TELE FILTER Zweigniederlassung der DOVER EUROPE GMBH 25.04.00 Potsdamer Str. 18 D- 14513 Teltow ! (+49)03328-4784-10 ; Fax (+49)03328-4784-30 http:\\www.telefilter.com