CDSCB Murata Manufacturing Co., CDSCB Datasheet - Page 61

• Manufacturer Part Number: CDSCB
• Description: Ceramic Filter For Audio/visual Equipment
• Manufacturer: Murata Manufacturing Co.

20
!Note
!Note
SFPLA/CFWLA series for AM use is one of the most
recommendable intermediate filters, having such
distinctive features as high selectivity, high
stability, high attenuation, and adjustment-free
operation. Additionally its easy matching with IC
helps create an easy circuit design.
This is the most recommendable for car-stereo and
all band radio with high attenuation.
60
SFPLA450KJ1A-B0
SFPLA450KH1A-B0
CFWLA450KJFA-B0
CFWLA450KHFA-B0
Insertion Loss: at minimum loss point
Center frequency (fo) is defined by the center of 6dB bandwidth.
(fn) means nominal center frequency (450kHz).
For safety purposes, connect the output of filters to the IF amplifier through a D.C. blocking capacitor. Avoid applying a direct current to the output of ceramic filters.
The order quantity should be an integral multiple of the "Minimum Quantity" shown in the package page.
CERAFILr (Filters/Traps/Discriminators) for Audio/Visual Equipment
CERAFILr 455kHz SFPLA/CFWLA Series
Features
Recommended IFT (7x7)
• Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
• This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
Part Number
Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this PDF catalog to prevent smoking and/or burning, etc.
This catalog has only typical specifications. Therefore, you are requested to approve our product specifications or to transact the approval sheet for product specificaions before ordering.
Item
• Matching of CERAFILrSFPLA/CFULA/CFWLA series with IFT is decided
S(3)
by the Qu of IFT and IFT secondary side impedance, |Z2|. Set the Qu at
about 40 because a Qu value which is too high (e.g.,90) may produce
ripple in the waveform. It is recommended to match the impedance of |Z2|
with that of the CERAFILr.
Winding Specification
(2)
(1)
Tuning Capacitance
(Bottom view)
No load Qu
Type
(4)S
(6)
Frequency (fo)
450 1.0kHz
450 1.0kHz
450 (fn)
450 (fn)
(1)—(2)
Center
(kHz)
60T
SFPLA/CFULA/CFWLA
(2)—(3)
180pF
125T
40
Bandwidth
fn 2.0 min.
fn 3.0 min.
fn 2.0 min.
fn 3.0 min.
(kHz)
6dB
(4)—(6)
28T
40 min.[fn+7.5kHz]
50 min.[fn+7.5kHz]
40 min.[fn+9kHz]
50 min.[fn+9kHz]
Selectivity (+)
(dB)
SSG
Test Circuit
40 min.[fn-7.5kHz]
50 min.[fn-7.5kHz]
Rg
CFWLA Series
SFPLA Series
40 min.[fn-9kHz]
50 min.[fn-9kHz]
Selectivity (-)
(dB)
R1
Rg+R1 =R2 : Input/Output Impedance
Input
Insertion Loss
2.3 0.5
2.9 0.3
0.15 0.05
6.0 max.
6.0 max.
7.0 max.
6.0 max.
0.15
(dB)
3.3 0.5
(4) (3)
(5)
MARKING
(3)
Ground
MARKING
8.0 0.3
(2)
11.0 0.5
2.9
2.9— — 0.3
2.9 0.3
2.0 0.3
2.7 0.3
Output
EIAJ
CODE
Continued on the following page.
(2)
(1)
EIAJ
CODE
0.3
R2
(1)
1.2 0.5
Input/Output
2.6 0.3
Impedance
1.2 0.5
(ohm)
2000
2000
2000
2000
P50E.pdf 03.4.16
0.8 0.1
0.6 0.1
Connection
(2)(3)(4) : Ground
Connection
(1) : Input
(2) : Ground
(3) : Output
0.6 0.1
0.8 0.1
(1) : Input
(5) : Output
RF
(in mm)
Element
Voltmeter
(in mm)
4
4
6
6