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ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 913-782-7787 800-237-1041 FAX 913-782-6991 WWW.ECSXTAL.COM
CERAMIC FILTERS
LTM455W SERIES
6 ELEMENT CERAMIC FILTER
7.1
6.3
2.2
9.5
6.4
4.3
3
4
5
2
1
Connection
Input
Ground
Output
Ground
3
4
5
2
1
2.6
2.9
7.1
Figure 1) LTM455W – Front, Side and Bottom views
Ultra small size high selectivity type ceramic
filter for communication use.
FEATURES
Ultra small size
6.3 mm profile
Broad bandwidth
RoHS Compliante (Note 7 exemption)
6 elements
Rg
Rg+R1=R2=input/output impedance
S.S.G.
LTM
V.M.
RF
R2
1
2
3
4
5
Figure 2) LTM455W – Measuring Circuit
Frequency (KHz)
Attenuation
(dB)
0
10
20
30
40
50
60
410
420
430
440
450
460
470
480
490
500
LTM455BW
LTM455EW
LTM455HW
Figure 3) LTM455W – Characteristics
PACKAGE DIMENSIONS (mm)
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
CENTER
INSERTION
PASS BAND
6 dB
50 dB
STOP BAND ATT.
INPUT / OUTPUT
PART NUMBER
FREQUENCY
LOSS
RIPPLE
BANDWIDTH
±100KHZ
IMPEDANCE
(KHz)
(dB) MAX.
(KHz) MIN.
(dB) MAX.
(dB) MIN.
(
)
LTM455BW
455 ±2.0
4
2
±15
±30
45
1500
LTM455CW
455 ±2.0
4
2
±12.5
±24
45
1500
LTM455DW
455 ±1.5
4
2
±10
±20
45
1500
LTM455EW
455 ±1.5
6
2
±7.5
±15
45
1500
LTM455FW
455 ±1.5
6
2
±6
±12.5
45
2000
LTM455GW
455 ±1.5
6
2
±4.5
±10
45
2000
LTM455HW
455 ±1.0
6
2
±3
±9
45
2000
LTM455IW
455 ±1.0
6
2
±2
±7.5
45
2000
LTM455HTW
455 ±1.0
6
2
±3
±9
60
2000
LTM455ITW
455 ±1.0
6
2
±2
±7.5
60
2000
Note: To avoid potential problems, connect the output to an IF amplifier
through a DC cut capacitor.
Avoid applying a direct current to output end of the ceramic filters (between | and y{).