Monolithic crystal filter MQF21.4-1800/06 Application • 8 pol filter • i.f.- filter • use in mobile and stationary transceivers Unit Value MHz dB kHz dB dB dB dB Hz 21.4 ± 400 Hz ≤ 3.0 ± 9.00 ≤ 2.0 ≥ 65 > 90 < 0.5 < 600 Terminating impedance Z R1 || C1 R2 || C2 Ohm/pF Ohm/pF 1300 || 2 1300 || 2 Operating temp. range °C -40... +85 Limiting values Centre frequency Insertion loss Pass band at 6.0 dB Ripple in pass band Stop band attenuation Ripple-gradient per kHz Changing of fc Characterstics Pass band fc fc ± 8.00 kHz fc ± 17.5 kHz fc ± 25 kHz fc ± 7 kHz in op.temp.range MQF21.4-1800/06 Stop band Pin connections: 1 2 3 4 Input Input-E Output Output-E TELE FILTER Zweigniederlassung der DOVER EUROPE GMBH 29.06.98 Potsdamer Str. 18 D- 14513 Teltow ! (+49)03328-4784-10 ; Fax (+49)03328-4784-30 http:\\www.telefilter.com