MF1091-1 FOR IF FILTER OF DCS 1800 HAND HELD MF1091-1 DESCRIPTION FEATURES This SAW filter for the IF filter circuit of DCS 1800 hand held 1. SMD package insures small size, lightweight. 2. Adjustment free. 3. Low insertion loss and high stop band attenuation. 4. Wide and sharp passband characteristics. 5. High stability and reliability. 6. Designed for reflow solderings. APPLICATION ELECTRICAL PERFORMANCE PACKAGE OUTLINE DIMENSIONS PRELIMINARY Item Frequency range Min. Typ. Max. Units Center Fraquency (f0) 246.0 MHz ––– ––– ––– ––– Bandwidth (f0-3 dB) ––– ±90 ±150 ––– kHz Insertion Loss at f0 246.0 MHz ––– ––– ––– dB Pass Band Ripple 245.91 ~ 246.09 MHz (f0 ± 90 kHz) ––– 0.8 2.0 dBp-p Group Delay Ripple 245.91 ~ 246.09 MHz (f0 ± 90 kHz) ––– 0.8 1.5 µsec p-p f0 –25.0 ~ f0 –3.0 MHz 47.0 52.0 ––– f0 –1.6 MHz 48.0 53.0 ––– 9.1 2.0 Attenuation (relative to 0 dB) ,,,,, ,,,, ,,,,, ,,,,,,,,,,,,,,,,,, ,,,,,,,, ,,,,,,,,, ,,,,, ,,, , ,,,, ,,,,,,, ,,,,, ,,, , , ,,,, ,,,,,, ,,,,, ,,, , 4.8 • DCS 1800 Handheld 7.5 10-0.8 ,,,,,,,,,,,,,,,,,,, , ,,,,, ,,,,,,, ,,,,, ,,, , , ,,,, ,,,,,,, ,,, , , ,,, ,,,,, ,,, 2.54 6 7 9 10 8 3 5 4 2.54 2 2.54 1 6 : IN 1 : OUT 2, 7 : NC Other : GND Unit : mm f0 –0.8 MHz 22.0 25.0 ––– f0 –0.6 MHz 22.0 25.0 ––– f0 –0.4 MHz 20.0 25.0 ––– f0 –0.2 MHz 6.0 8.0 ––– f0 +0.2 MHz 6.0 10.0 ––– f0 +0.4 MHz 28.0 33.0 ––– f0 +0.6 MHz 33.0 38.0 ––– f0 +0.8 MHz 37.0 42.0 ––– f0 +1.6 MHz 28.0 33.0 ––– f0 +3.0 ~ f0 +5.0 MHz 33.0 38.0 ––– f0 +5.0 ~ f0 +25.0 MHz 48.0 53.0 ––– Input and Output Impedances 290 9.1×4.8×2.0 mm Package Size Operating temperature range: –10 ~ +75°C Measurement Circuit NC 6 pF OUT (50 ) 1 39 nH 6 pF (50 ) IN 6 39 nH – 72 – NC – 73 – dB