Monolithic crystal filter MQF21.4-1800/08 Application • 6 pol filter • i.f.- filter • use in mobile and Limiting values stationary transceivers Nominal frequency Insertion loss Pass band at 3.0dB Ripple in pass band Stop band attenuation Alternate attenuation Spurious responses Group delay (absolute) Group delay distortion fo fo ± 9 kHz fo ± 40 kHz fo ± 50 kHz fo ± 9 kHz Terminating impedance Z R1||C1 R2||C2 Operating temp. range Storage temp. range Environment conditions Characteristics Pass band Pin connections: Unit Value MHz dB kHz dB dB dB dB dB µs µs 21.4 < 4.0 ±> 9 Gaussian > 60 > 70 > 70 > 40 < 60 < 5 Ohm/pF Ohm/pF 50 || 0 50 || 0 °C °C -20... +70 -45... +85 according to CF001 MQF21.4-1800/08 Stop band 1 2 3 4 Input Ground-Input Output Ground-Output TELE FILTER Zweigniederlassung der DOVER Germany GMBH Potsdamer Str. 18 D- 14513 Teltow 22.09.05 (+49)03328-4784-10 ; Fax (+49)03328-4784-30 http:\\www.vectron.com