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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

CERAMIC FILTERS

6 ELEMENT CERAMIC FILTER

7.1

9.5

6.4

3

4

5

2

1

Connection

Input

Ground

Output

Ground

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)

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

BANDWIDTH

±100KHZ

IMPEDANCE

(KHz)

(dB) MAX.

(dB) MAX.

(KHz) MIN.

(dB) MAX.

(dB) MIN.

(

Ω)

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 y➂{).