CERAMIC FILTER LTM455EW

Good Point;
 
2.Features:Product with high reliability and working in a wide temp. range.
3, Short lead time: 2-4weeks
4, Factory offer competitive price & good quality


1.   THIS SPECIFICATION SHALL COVER THE CHARACTERISTICS OF CERAMIC FILTER   WITH 455KHz, INTENED FOR USE IN TRANSCEIVERS,ETC.
2.  PART NUMBER: LTM455EW
3.   ELECTRONICAL SPECIFICATIONS
A.   CENTRE FREQUENCY (f.)   :   455KHz±1.0KHz. MAX.
B.   BAND WIDTH AT 6 dB        :   ±7.5 KHz MIN.(TO 455KHz)
C.   BAND WIDTH AT 50 dB       :   ±15.0 KHz MAX.(TO 455KHz)
D.   STOP BAND ATTENUATION   :   45 dB MIN.(AT f.±100KHz)
E.   RIPPLE                     :   2.5 dB MAX.(AT f.±5.0KHz)
F.   INSERTION LOSS            :   4.0 dB MAX (AT THE SMALLEST LOSS)
G.   TEMPRATURE COEFFICIENT
   OF CENTER FRENQUENCY   :   50PPM/ºC Max.(-20 TO +80ºC)
H.   INPUT/OUTPUT IMPEDANCE  :   1.5K
   NOTE :  A)  CENTER FREQUENCY SHALL BE DEFIED AS THE CENTRAL 
               VALUE OF THE BAND WITH AT 6 dB
            B)  TEMPRATURE  COEFFICIENT  OF  CENTER FREQUENCY 
                SHALL BE  DEFINED AS THE AVERAGE OF THE CENTRAL
                    FREQUENCY. 
4.  MEASUREMENT
A.   ENVIRONMENTAL CONDITION
MEASUREMENT SHALL  BE  CARRIED OUT AT THE REFERENCE   TEMPERATURE OF 25ºC  ±2ºC.  IT  SHALL  BE  POSSIBLY  DONE  AT 5ºCTO 35ºCUNLESS IT IS QUESTIONABLE.
B.   MEASURING CIRCUIT

 

   
  #S.S.G.      (STANDARD SIGNAL GENERATION)
  R.F.V.M.     (RADIO FREQUENCY VOLTAGE METER)