Datasheet > CFM3

CFM3

更新时间： 2024-01-19 11:04:28

品牌	Logo	应用领域
TOKO		过滤器 LTE
页数	文件大小	规格书
1页	96K
描述
AM CERAMIC FILTERS

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中文翻译

获取价格

数据手册

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CFM3 数据手册

CFM2/CFM3

AM CERAMIC FILTERS

Description

Dimensions

• 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

Unit: mm

• 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 L₂, 62pF with L₂)

•

2. L₁2.7mH (CFM2), 1.35mH (CHM3)

•

L₂1.0mH

3. During testing, when matching coils are used at input/output sides,

connect L₁and L₂(dummy)

4. R₁, R₂: Input-output impedance

Cs: Stray capacitance

(less than 50pF, including EV)

STANDARD FILTERS SELECTION GUIDE

TYPE CFM2/CFM3 (CERASIZER^®)

TOKO

Part

Number

Center

Frequency (Fo)*

(kHz)

Bandwidth

at 6dB

Selectivity

at Fo±9kHz

(dB)

Ripple

in Pass Band

(dB)

Insertion

Loss

(dB)

Input/Output

Impedance

(kΩ)

(kHz)

CFM2

##AHCFM2-450Z

##AHCFM2-450AL

##AHCFM2-450BL

##AHCFM2-450CL

##AHCFM2-450DL

##AHCFM2-450EL

450±1.0

4.0±1.0

4.0 min.

6.0 min.

8.0 min.

10.0 min.

12.0 min.

24.0 min.

18.0 min.

16.0 min.

12.0 min.

9.0 min.

1.0 max.

2.0 max.

7.0 max.

6.0 max.

1.0/1.5

1.5/2.0

2.0/2.0

2.5/2.5

6.0 min.

CFM3

##ACFM3-450AL

##ACFM2-450BL

##ACFM2-450CL

450±1.0

4.0 min.

5.5 min.

8.0 min.

28.0 min.

24.0 min.

20.0 min.

2.0 max.

6.0 max.

3.0/3.0

* 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

CF-313-CFM2/3

R-LOG0805A

Printed in USA

中文翻译

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