Monolithic crystal filter MQF21.4-1500/21 Application • 2 pol filter • i.f.- filter • use in mobile and stationary transceivers Unit Value MHz dB kHz dB dB dB dB 21.4 ≤ 1.5 ± 7.50 ≤ 0.5 ≥ 18 > 25 > 40 except spurious Terminating impedance Z R1 || C1 R2 || C2 Ohm/pF Ohm/pF 1500 || 2.5 1500 || 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 25 kHz 40 kHz 150...500 kHz MQF21.4-1500/21 Stop band Pin connections: 1 2 3 4 Input Input-E Output Output-E TELE FILTER Zweigniederlassung der DOVER EUROPE GMBH 25.10.00 Potsdamer Str. 18 D- 14513 Teltow ! (+49)03328-4784-10 ; Fax (+49)03328-4784-30 http:\\www.telefilter.com