ltm450iu ecsxtal, ltm450iu Datasheet

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ltm450iu

Manufacturer Part Number
ltm450iu
Description
4 Element Ceramic Filter
Manufacturer
ecsxtal
Datasheet
LTM450U
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
PACKAGE DIMENSIONS (mm)
ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX 913-782-6991 • WWW.ECSXTAL.COM
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
PART NUMBER
LTM450BU
LTM450CU
LTM450DU
LTM450EU
LTM450FU
LTM450GU
LTM450HU
LTM450IU
LTM450HTU
LTM450ITU
2.4 1.8 0.8
1
2.4 1.8 0.8
Figure 1) LTM450U – Front, Side and Bottom views
3
7
2
4
and
).
FREQUENCY
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
CENTER
Connection
SERIES
(KHz)
1
2
3
4
0.8
Input
Output
Ground
Ground
4.3
7
INSERTION
(dB) MAX.
4 ELEMENT CERAMIC FILTER
Ultra small size high selectivity type ceramic
filter for communication use.
LOSS
4
4
4
6
6
6
6
6
6
6
CERAMIC FILTERS
PASS BAND
(dB) MAX.
RIPPLE
2
2
2
2
2
2
2
2
2
2
78
BANDWIDTH
(KHz) MIN.
±12.5
6 dB
±7.5
±4.5
CERAMIC FILTERS
±15
±10
±6
±3
±2
±3
±2
BANDWIDTH
(dB) MAX.
• Ultra small size
• 6.5 mm profile
• Bandwidths from
• RoHS Compliant (Note 7 exemption)
• 4 elements
FEATURES
±12.5
40 dB
±7.5
±7.5
±30
±24
±20
±15
±10
±9
±9
4KHz to 30KHz available
10
20
30
40
50
60
0
410 420 430 440 450 460 470 480 490 500
Rg+R1=R2=input/output impedance
Rg
R1
Figure 2) LTM450U – Measuring Circuit
S.S.G.
Figure 3) LTM4550U – Characteristics
STOP BAND ATT.
INPUT
(dB) MIN.
1
±100KHZ
GROUND
27
27
27
27
27
25
25
25
35
35
Frequency (KHz)
3
LTMU
GROUND
4
OUTPUT
2
INPUT / OUTPUT
IMPEDANCE
R2
1500
1500
1500
1500
2000
2000
2000
2000
2000
2000
( )
LTM455BU
LTM455EU
LTM455HU
RF
V.M.

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