Monolithic crystal filter (preliminary specification) MQF21.4-3000/37 Application • 6 pol filter • i.f.- filter • use in mobile and stationary transceivers Characterstics Pass band Pin connections: Unit Value MHz MHz dB kHz dB dB dB µs dBm 21.4 21.4 ± 1300 Hz ≤ 4.0 ± 15.00 Gaussian ≥ 60 > 90 except spurious <5 > 30 Terminating impedance Z R1 || C1 R2 || C2 Ohm/pF Ohm/pF 50 || 0 50 || 0 Operating temp. range °C -10... +70 Limiting values Nominal frequency Centre frequency Insertion loss Pass band at 6.0 dB Ripple in pass band Stop band attenuation Alternate attenuation Group delay distortion IP3 fo fc fc ± fc ± fo ± fc ± 15.00 kHz 56 kHz 1.2...5 MHz 15 kHz MQF21.4-3000/37 Stop band 1 2 3 4 Input Ground-Input Output Ground-Output TELE FILTER Zweigniederlassung der DOVER Germany GMBH 12.07.02 Potsdamer Str. 18 D- 14513 Teltow ! (+49)03328-4784-10 ; Fax (+49)03328-4784-30 http:\\www.vectron.com