型号:LTM455EW ELECTRONICAL SPECIFICATIONSA. CENTRE FREQUENCY(f。) : 455 KHz±1.5KHzB. BAND WIDTH AT 6 dB : ±7.5 KHz MIN.(TO 455KHz)C. BAND WIDTH AT 50 dB : ±15 KHz MAX.(TO 455KHz)D. STOP BAND ATTENUATION : 45 dB MIN.(AT f。±100KHz)E. RIPPLE : 3.0 dB MAX.( AT f。±5.0KHz)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 : 1.5 KΩNOTE : A) CENTER FREQUENCY SHALL BE DEFIED AS THE CENTRALVALUE OF THE BAND WTTH AL 6 dB B) TEMPRATURE COEFFICIENT OF CENTER FREQUENCYSHALL BE DEFINED AS THE AVERAGE OF THE CENTRALFREQUECY.