3. PART NUMBERING : LTUC455D
4. ELECTRONICAL SPECIFICATIONS
A. CENTRE FREQUENCY (f。)
B. BAND WIDTH AT 6 dB
C. BAND WIDTH AT 40 dB
:
455KHz±1.5KHz. MAX.
: ±10.0 KHz MIN.(TO 455KHz)
: ±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
G. TEMPRATURE COEFFICIENT
:
6.0 dB MAX (AT THE SMALLEST LOSS)
OF CENTER FRENQUENCY
:
±50PPM/℃ Max.(-20 TO +80℃)
H. INPUT/OUTPUT IMPEDANCE : 1.5KΩ
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.
R.F.V.M.
(STANDARD SIGNAL GENERATION)
(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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