ACFM2-450BL

Manufacturer Part NumberACFM2-450BL
DescriptionAM CERAMIC FILTERS
ManufacturerTOKO [TOKO, Inc]
ACFM2-450BL datasheet
 
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Description
• Compact 2/3 element AM IF filter with
unique structure for high reliability.
• Center frequency range: 450 to 470kHz
• Bandwidth at 6dB: 4 to 12kHz. (4~8kHz: CFM3)
Features
• Compact, low profile
• High selectivity, suited to a wide range of applications
• Low temperature coefficient
• Low spurious response
• Lead-free terminations
Applications
• AM radio cassettes, stereo sets, telecommunications
• Wireless data communication equipment
Test Circuit
Test Conditions
1. C includes test circuit capacitance. (50pF without L
2.
L
2.7mH (CFM2), 1.35mH (CHM3)
1
L
1.0mH
2
3. During testing, when matching coils are used at input/output sides,
connect L
and L
(dummy)
1
2
4. R
, R
: Input-output impedance
1
2
Cs: Stray capacitance
(less than 50pF, including EV)
STANDARD FILTERS SELECTION GUIDE
TYPE CFM2/CFM3 (CERASIZER
TOKO
Center
Part
Frequency (Fo)*
Number
(kHz)
CFM2
##AHCFM2-450Z
450±1.0
##AHCFM2-450AL
450±1.0
##AHCFM2-450BL
450±1.0
##AHCFM2-450CL
450±1.0
##AHCFM2-450DL
450±1.0
##AHCFM2-450EL
450±1.0
CFM3
##ACFM3-450AL
450±1.0
##ACFM2-450BL
450±1.0
##ACFM2-450CL
450±1.0
* 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.
August 2005
© 2005 TOKO America, Inc.
All Rights Reserved
Printed in USA
Dimensions
, 62pF with L
)
2
2
)
®
Bandwidth
Selectivity
Ripple
at 6dB
at Fo±9kHz
in Pass Band
(kHz)
(dB)
4.0±1.0
24.0 min.
1.0 max.
4.0 min.
18.0 min.
1.0 max.
6.0 min.
16.0 min.
1.0 max.
8.0 min.
12.0 min.
2.0 max.
10.0 min.
9.0 min.
2.0 max.
12.0 min.
6.0 min.
2.0 max.
4.0 min.
28.0 min.
2.0 max.
5.5 min.
24.0 min.
2.0 max.
8.0 min.
20.0 min.
2.0 max.
TOKO America, Inc.
1250 Feehanville Drive, Mount Prospect, Illinois 60056
Tel: (847) 297-0070 Fax: (847) 699-7864 Web:
CF-313-CFM2/3
R-LOG0805A
CFM2/CFM3
AM CERAMIC FILTERS
Insertion
Input/Output
Loss
Impedance
(dB)
(dB)
(kΩ)
7.0 max.
1.0/1.5
6.0 max.
1.0/1.5
6.0 max.
1.5/2.0
6.0 max.
2.0/2.0
6.0 max.
2.0/2.0
6.0 max.
2.5/2.5
6.0 max.
3.0/3.0
6.0 max.
3.0/3.0
6.0 max.
3.0/3.0
http://www.tokoam.com
Unit: mm
1