Monolithic crystal filter MQF21.4-1200/02 Application • 4 pol filter • i.f.- filter • use in mobile and stationary transceivers Unit Value Spurious responses MHz dB kHz dB dB dB dB dB 21.4 ≤ 2.0 ± 6.00 ≤ 1.0 ≥ 40 > 80 > 65 > 40 Terminating impedance Z R1 || C1 R2 || C2 Coupling capacitance Ohm/pF Ohm/pF pF 1200 || 2.5 1200 || 2.5 9.0 °C -25... +70 Limiting values Center frequency Insertion loss Pass band at 3.0 dB Ripple in pass band Stop band attenuation Alternate attenuation fo ± 4.50 kHz ± 20 kHz - 100...1000 kHz + 50....1000 kHz fo fo fo fo Ck Operating temp. range Characterstics Pass band MQF21.4-1200/02 Stop band Pin connections: 1 2 3 4 Input Input-E Output Output-E TELE FILTER Zweigniederlassung der DOVER EUROPE GMBH 11.05.99 Potsdamer Str. 18 D- 14513 Teltow ! (+49)03328-4784-10 ; Fax (+49)03328-4784-30 http:\\www.telefilter.com