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| LFY/LFYM AM CERAMIC FILTERS Description * AM Ceramic filters are connected in a ladder structure and are available as either 4/6 element devices * Bandwidths from 6 to 30 kHz Dimensions Features * 450, 455 kHz, (460kHz and 486kHz by special request) * High selectivity * Compact package * Version with group delay variations specified also available * Lead-free terminations LFY Unit: mm Applications * AM radio cassettes, AM stereo sets * Cordless telephones, pagers * Two-way radios LFYM Unit: mm STANDARD FILTERS SELECTION GUIDE TYPE LFY/LFYM TOKO Part Number LFY ALFY455H ALFY455G ALFY455F ALFY455E BLFY455D BLFY455C BLFY455B LFYM ALFYM455H ALFYM455G ALFYM455F ALFYM455E BLFYM455D BLFYM455C BLFYM455B Center * Frequency (kHz) 4551.0 4551.0 4551.0 4551.0 4552.0 4552.0 4552.0 4551.0 4551.0 4551.0 4551.0 4552.0 4552.0 4552.0 Bandwidth at 6 dB (kHz) 3.0 min. 4.5 min. 6.0 min. 7.5 min. 10.0 min. 12.5 min. 15.0 min. 3.0 min. 4.5 min. 6.0 min. 7.5 min. 10.0 min. 12.5 min. 15.0 min. Bandwidth at 50 dB (kHz) 9.0 min. 10.0 min. 12.5 min. 15.0 min. 20.0 min. 24.0 min. 30.0 min. 9.0 min. 10.0 min. 12.5 min. 15.0 min. 20.0 min. 24.0 min. 30.0 min. Attenuation fo 100 KHz (dB) 35.0 max. 35.0 max. 35.0 max. 35.0 max. 35.0 max. 35.0 max. 35.0 max. 35.0 max 35.0 max 35.0 max 35.0 max 35.0 max 35.0 max 35.0 max Insertion Loss (dB) 6.0 max. 6.0 max. 6.0 max. 6.0 max. 4.0 max. 4.0 max. 4.0 max. 6.0 max. 6.0 max. 6.0 max. 6.0 max. 4.0 max. 4.0 max. 4.0 max. Input/Output Impedance (k) 2.0 2.0 2.0 1.5 1.5 1.5 1.5 2.0 2.0 2.0 1.5 1.5 1.5 1.5 * For 450kHz, substitute 450 for 455 in part number. August 2005 (c) 2005 TOKO America, Inc. All Rights Reserved Printed in USA CF-318-LFY/M R-LOG0805A 1 LFY/LFYM AM CERAMIC FILTERS Frequency Response LFY / LFYM (6 element) 0 20 Attenuation (dB) 40 60 80 CEH 100 415 425 435 445 455 465 475 485 495 Frequency (kHz) Bandwidth Rank: C = 12.5kHz E = 7.5kHz H = 3kHz Test Circuit Test Conditions 1. C includes test circuit capacitance. 2. R1, R2: Input-output impedance Cs: Stray capacitance (less than 50pF, including EV) LFY Test circuit R1 5 12 E1 50 SG. Rg 34 R2 E2 E.V. Z = Rg + R1 =R2 LFYM Test circuit R1 50 SG. Rg E1 1 3 4 2 5 R2 E2 E.V. Z = Rg + R1 =R2 The information furnished by TOKO, Inc. is believed to be accurate and reliable. However, TOKO reserves the right to make changes or improvements in the design, specification or manufacture of its products without further notice. TOKO does not assume any liability arising from the application or use of any product or circuit described herein, nor for any infringements of patents or other rights of third parties which may result from the use of its products. No license is granted by implication or otherwise under any patent or patent rights of TOKO, Inc. TOKO America, Inc. 1250 Feehanville Drive, Mount Prospect, Illinois 60056 Tel: (847) 297-0070 Fax: (847) 699-7864 Web: http://www.tokoam.com August 2005 (c) 2005 TOKO America, Inc. All Rights Reserved Printed in USA CF-318-LFY/M R-LOG0805A 2 |
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