LT421AW Datasheet, PDF (1/3 Pages) Shenzhen Luguang Electronic Technology Co., Ltd – Ceramic Filter

LT421AW
Ceramic Filter
1. THIS SPECIFICATION SHALL COVER THE CHARACTERISTICS OF
CERAMIC FILTER WITH 421KHz,INTENED FOR USE IN TRANSCEIVERS,ETC.
2. PART NUMBER : LT421AW
3. ELECTRONICAL SPECIFICATIONS
A. CENTRE FREQUENCY (f。) : 421KHz±1.0KHz. MAX.
B. BAND WIDTH AT 6 dB
: ±10 KHzMIN.(TO 421KHz)
C. BAND WIDTH AT 50 dB
: ±20 KHz MAX.(TO 421KHz)
D. STOP BAND ATTENUATION : 45 dB MIN.(AT f。±100KHz)
E. RIPPLE
: 2.0 dB MAX.(AT f。±5.0KHz)
F. INSERTION LOSS
: 4.0 dB MAX (AT THE SMALLEST LOSS)
G. TEMPRATURE COEFFICIENT
OF CENTER FRENQUENCY : ±50PPM/℃ Max.(-20 TO +80℃)
H. INPUT/OUTPUT IMPEDANCE : 1.5 KΩ
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
FREQUECY.
4. 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
SHENZHEN LUGUANG ELECTRONIC TECHNOLOGY CO.,LTD.