LTWC455G datasheet(4/7 Pages) SHOULDER

Part #	LTWC455G

Description	TEMPERATURE COEFFICIENT OF CENTER FREQUENCY SHALL BE DEFINED AS THE AVERAGE OF THE CENTRAL FREQUECY.

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Manufacturer	SHOULDER [Shoulder Electronics Limited.]

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3. PART NUMBERING : LTUC455D

4. ELECTRONICAL SPECIFICATIONS

A. CENTRE FREQUENCY (f。)

:

455KHz±1.5KHz. MAX.

B. BAND WIDTH AT 6 dB

:

±10.0 KHz MIN.(TO 455KHz)

C. BAND WIDTH AT 40 dB

:

±20.0 KHz MAX.(TO 455KHz)

D. STOP BAND ATTENUATION

:

27 dB MIN.(AT f。±100KHz)

E.

RIPPLE

:

2.0 dB MAX.

F.

INSERTION LOSS

:

6.0 dB MAX (AT THE SMALLEST LOSS)

G. TEMPRATURE COEFFICIENT

OF CENTER FRENQUENCY

:

±50PPM/℃ Max.(-20 TO +80℃)

H. INPUT/OUTPUT IMPEDANCE

:

1.5K

Ω

NOTE :

A)

CENTER FREQUENCY SHALL BE DEFIED AS THE CENTRAL

VALUE OF THE BAND WITH AT 6 dB

B)

TEMPERATURE

COEFFICIENT

OF

CENTER FREQUENCY

SHALL BE

DEFINED AS THE AVERAGE OF THE CENTRAL

FREQUECY.

5.

MEASUREMENT

A. ENVIRONMENTAL CONDITION

MEASUREMENT SHALL

BE

CARRIED OUT AT THE REFERENCE

TEMPERATURE OF 25℃

±2℃.

IT

SHALL

BE

POSSIBLY

DONE

AT 5℃TO 35℃UNLESS IT IS QUESTIONABLE.

B.

MEASURING CIRCUIT

#S.S.G.

(STANDARD SIGNAL GENERATION)

R.F.V.M.

(RADIO FREQUENCY VOLTAGE METER)

Rg+R1=R2=1.5 KΩ

C<=50 PF

6.

ENVIRONMENTAL CHARACTERISTICS

6-1

HIGH TEMPERATURE EXPOSURE

SUBJECT THE

FILTER TO +80℃ FOR 96 HOURS. THEN RELEASE THE

F ILTER

INTO THE

ROOM

CONDITIONS

FOR

1 TO 2 HOURS

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SHOULDER ELECTRONICS LIMITED

Page: 4

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