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| CFMR AM CERAMIC FILTERS Description * Low profile, compact, 2-element AM IF filter with high reliability. * Center frequency range: 450 to 470kHz * Bandwidth at 6dB: 4 to 10kHz. Dimensions Features * Compact, low profile (height 7.6mm). * High selectivity, suited for a wide range of applications * Low spurious response * Lead-free terminations Applications * AM radio cassettes, stereo sets, telecommunications * Wireless data communication equipment Unit: mm Test Circuit Test Conditions 1. C includes test circuit capacitance. 2. L1 2.7mH, L2 1.0mH 3. During testing, when matching coils are used at input/output sides, connect L1 and L2 (dummy) 4. R1, R2: Input-output impedance Cs: Stray capacitance (less than 50pF, including EV) STANDARD FILTERS SELECTION GUIDE TYPE CFMR (CERASIZER(R)) TOKO Center Part Frequency (Fo)* Number (kHz) ##ACFMR-455Z 4551.0 ##ACFMR-455AL 4551.0 ##ACFMR-455BL 4551.0 ##ACFMR-455CL 4551.0 ##ACFMR-455DL 4551.0 Bandwidth at 6dB (kHz) 4.01.0 4.0 min. 6.0 min. 8.0 min. 10.0 min. Selectivity at Fo9kHz (dB) 24.0 min. 18.0 min. 16.0 min. 12.0 min. 9.0 min. Ripple in Pass Band (dB) 1.0 max. 1.0 max. 1.0 max. 2.0 max. 2.0 max. Insertion Loss (dB) 7.0 max. 6.0 max. 6.0 max. 6.0 max. 6.0 max. Input/Output Impedance (k) 1.0/1.5 1.0/1.5 1.0/2.0 2.0/2.0 2.0/2.0 * Center frequencies 450kHz, 455kHz, 459kHz, 460kHz, 468kHz available. Center frequency tolerance available to 0.5kHz. 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-314-CFMR R-LOG0805A 1 |
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