FEATURES

APPLICATIONS

Specify

Ceramic Filter

LTU Series

455kHz or 450kHz

q u a r t z

b a s e d

f r e q u e n c y

c o n t r o l

c o m p o n e n t s

Order Hotline +44 1293 524245

www.aelcrystals.co.uk

sales@aelcrystals.co.uk

44

SP EC IF IC A TI O N

8

7

8.2

4

To take the best advantage of the safety feature of ceramic filters, connect output to anIF amplifier through a DC cut capacitor.

Avoid directly applying DC to output end of ceramic filters (Between 5 & 2,3,4)

2 1

3

2.7

4.3

Pin Connections

1 = Input

2 = Ground

3 = Output

High Selectivity

Low Cost

Wide Range of bandwidths Available

Industry Standard Outline & Pinout

Communications Equipment

F R E Q U E N C Y

C H A R A C T E R I S T I C S

Pa rt

Numb er

Centre

Freq (M Hz)

Insertion

Loss

(dB Max)

Pass Band

Ripple

(dB Max)

6 dB

Bandwidth

(kHz Min)

40 dB

Bandwidth

(kHz Min)

Stopband

Att. + / -100kHz

(d B M in )

Input/Output

Impedence ( )

LTU455B2

455 +/ -2.0

4

2

+/-15.0

+/ -30.0

27

1500

LTU455C2

455 +/ -2.0

4

2

+/-12.5

+/ -24.0

27

1500

LTU455D2

455 +/ -1.5

4

2

+/-10.0

+/ -20.0

27

1500

LTU455E2

455 +/ -1.5

6

2

+/- 7.5

+/-15.0

27

1500

LTU455F2

455 +/ -1.5

6

2

+/- 6.0

+/-12.5

27

2000

LTU455G2

455 +/ -1.5

6

2

+/- 4.5

+/-10.0

25

2000

LTU455H2

455 +/ -1.0

6

2

+/- 3.0

+/- 9.0

25

2000

LTU455I2

455 +/ -1.0

6

2

+/- 2.0

+/- 7.5

25

2000

LTU455HT

455 +/ -1.0

6

2

+/- 3.0

+/- 9.0

35

2000

RF

V.M

C

R2

S.S.G

R1

LTU

1

3

2

Rg

Rg+R1+R2=input/Output Impedence

C=10pF (Including strays and input/output

capacitance of RF Voltmeter

400

410

420

430

440

450

460

470

480

490

500

0

10

20

30

40

50

60

Freq (kHz)

LTU 455B2

LTU 455E2

LTU 455H2

Frequency Characteristics

Test Circuit

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