Crystal filter QF21.4-0020/06 Application • 6 pol filter • i.f.- filter • use in mobile and Limiting values stationary transceivers Nominal frequency Centre frequency Insertion loss Pass band at 6.0dB Ripple in pass band Stop band attenuation Alternate attenuation Group delay distortion fo fc fc ± 0.1 kHz fc ± 0.5 kHz fc ± 0.1 kHz Terminating impedance Z R1||C1 R2||C2 Operating temp. range Storage temp. range Environment conditions Characteristics Pass band Pin connections: Unit Value MHz MHz dB kHz dB dB dB µs 21.4 21.4 ±250Hz < 24.0 ± 0.1...0.25 Gaussian > 40 > 60 < 300 Ohm/pF Ohm/pF 50 || 0 50 || 0 °C °C -20... +70 -45... +85 according to CF001 QF21.4-0020/06 Stop band 1 2 3 4 Input Ground-Input Output Ground-Output TELE FILTER Zweigniederlassung der DOVER Germany GMBH 02.04.04 Potsdamer Str. 18 D- 14513 Teltow ! (+49)03328-4784-10 ; Fax (+49)03328-4784-30 http:\\www.vectron.com