Token LTM455DU Ltm 455/450 ceramic filter Datasheet

TOKEN
LTM 455/450 Ceramic Filters
Ceramic Filters
for Communication
Ceramic Filter for Communication
(Murata CFUM/WM 455/450 Compatible)
Preview
Token ceramic filters for communication LTM 455/450 U/W series are miniaturized versions of the Murata CFU/
CFWS lines.
These compact, highly selective characteristics are recommended for use in applications ranging from two-way
radio to auxiliary filters in high class transceivers.
These ultra-miniature versions consume approximately 40% less volume while still offering the same high
performance filter characteristics.
Version 2010
http://www.token.com.tw/
rfq token.com.tw
01 of 03
TOKEN
LTM 455/450 Ceramic Filters
Dimensions
2.5 2.7
6.5
9.5
45
① ②
5E
W
③
①
②
3.5
1.0
③ ④
① Input
③④ Ground
② Output
1.9
0.9
③④ ⑤
① ②
③
④
②
⑤
4.3
6.2
U
6.2
5E
① Input
③④⑤ Ground
② Output
3.5
45
0.7
.
1.0
2.4 1.8 0.8
6.5
4.3
6.5
Technical Characteristics
LTM455BU
LTM455EU
LTM455HU
10
20
30
40
50
60
410
430
450 460
480
0
(dB) Attenuation
(dB) Attenuation
0
500
LTM455BW
LTM455EW
LTM455HW
10
20
30
40
50
60
410
Frequency (KHz)
Part
Number
LTM455AU
LTM455BU
LTM455CU
LTM455DU
LTM455EU
LTM455FU
LTM455GU
LTM455HU
LTM455IU
LT
M455HTU
LTM455AW
LTM455BW
LTM455CW
LTM455DW
LTM455EW
LTM455FW
LTM455GW
LTM455HW
LTM455IW
LT
M455HTW
430
450 460
480
500
Frequency (KHz)
40dB
Band
Width
(kHz)
max
LTM455 U
50dB
Band
Width
(kHz)
max
LTM455 W
Pass
Insertion
Center
Band
Loss
Frequency
Ripple
(dB)
(kHz)
(dB)
max
max
6dB
Band
Width
(kHz)
min
455±2.0
455±2.0
455±2.0
455±1.5
455±1.5
455±1.5
455±1.5
455±1.0
455±1.0
4
4
4
4
6
6
6
6
6
2
2
2
2
2
2
2
2
2
±17.5
±15
±12.5
±10
±7.5
±6
±4.5
±3
±2
±40
±30
±24
±20
±15
±12.5
±10
±9
±7.5
±35
±30
±24
±20
±15
±12.5
±10
±9
±7.5
455±1.0
6
2
±3
±9
±9
Spurious
Attenuation
fo±100kHz
(dB) min
(LTM
455 U)
28
28
28
28
28
28
28
28
28
(LTM
455 W)
40
40
40
40
40
40
40
40
40
35
60
Input
/
Output
Impedance
(Ω)
1000
1500
1500
1500
1500
2000
2000
2000
2000
2000
Note: Center frequency 450KHz is also available.
02 of 03
http://www.token.com.tw/
rfq token.com.tw
Version 2010
TOKEN
LTM 455/450 Ceramic Filters
Test Circuit
R1
①
②
R1
LTM455U
Rg
~
③
②
①
LTM455W
④
Rg
RF
V.M
S.S.G
Rg+ R1= R2=Input/Output Impedance
~
③
⑤
④
R2
S.S.G
RF
V.M
Rg+ R1= R2=Input/Output Impedance
How to Order
LTM455BU
P


 Part Number
 Package
Back to 1st Page - Ceramic Filters for Communication - LTM 455/450
Version 2010
http://www.token.com.tw/
rfq token.com.tw
03 of 03
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