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PDF LTM450HU Data sheet ( Hoja de datos )
| Número de pieza | LTM450HU | |
| Descripción | 4 ELEMENT CERAMIC FILTER | |
| Fabricantes | ECS | |
| Logotipo |  |
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LTM450U SERIES 4 ELEMENT CERAMIC FILTER
Ultra small size high selectivity type ceramic
filter for communication use.
FEATURES
• Ultra small size
• 6.5 mm profile
• Bandwidths from
4KHz to 30KHz available
• RoHS Compliant (Note 7 exemption)
• 4 elements
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
PART NUMBER
CENTER
FREQUENCY
(KHz)
INSERTION
LOSS
(dB) MAX.
PASS BAND
RIPPLE
(dB) MAX.
6 dB
BANDWIDTH
(KHz) MIN.
LTM450BU
LTM450CU
LTM450DU
LTM450EU
LTM450FU
LTM450GU
LTM450HU
LTM450IU
LTM450HTU
LTM450ITU
450 ±2.0
450 ±2.0
450 ±1.5
450 ±1.5
450 ±1.5
450 ±1.0
450 ±1.0
450 ±1.0
450 ±1.0
450 ±1.0
4
4
4
6
6
6
6
6
6
6
2 ±15
2 ±12.5
2 ±10
2 ±7.5
2 ±6
2 ±4.5
2 ±3
2 ±2
2 ±3
2 ±2
40 dB
BANDWIDTH
(dB) MAX.
±30
±24
±20
±15
±12.5
±10
±9
±7.5
±9
±7.5
STOP BAND ATT.
±100KHZ
(dB) MIN.
27
27
27
27
27
25
25
25
35
35
INPUT / OUTPUT
IMPEDANCE
(Ω)
1500
1500
1500
1500
2000
2000
2000
2000
2000
2000
PACKAGE DIMENSIONS (mm)
77
0.8
INPUT
R1 1
OUTPUT
2
LTMU
34
Rg GROUND GROUND
S.S.G.
R2
RF
V.M.
Rg+R1=R2=input/output impedance
2.4 1.8 0.8
12
34
4.3
Connection
1 Input
2 Output
3 Ground
4 Ground
2.4 1.8 0.8
Figure 1) LTM450U – Front, Side and Bottom views
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 ➂ and xy).
Figure 2) LTM450U – Measuring Circuit
0
LTM455BU
10
LTM455EU
20 LTM455HU
30
40
50
60
410 420 430 440 450 460 470 480 490 500
Frequency (KHz)
Figure 3) LTM4550U – Characteristics
ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX 913-782-6991 • WWW.ECSXTAL.COM
CERAMIC FILTERS 78 CERAMIC FILTERS
Free Datasheet http://www.datasheet4u.com/
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