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)