1.scope shoulder ?s saw filter series have broad line up products meeting all broadcast standard including ntsc,pal and secam systems. these filters are composed of two interdigital tran sducers on a single -crystal. piezoelectrical chip. they are used in electronic equipments such as tv and so on. 2.construction 2.1 dimension and materials manufacturer?s name : shoulder electronics co. ltd(china) type : MVF389A1T 0: year(0,1,2,3,4,5,6,7,8,9) b:product in this quarter(a:1~3,b:4~6,c:7~9,d:10~12) hd 4 . 8 18.5 1 1 . 5 4 . 0 1 2 3 4 5 67 8 10 0b
2.2. circuit construction, measurement circuit
3.characteristics standard atmospheric conditions unless otherwise specified , the standard rang of atmospheric conditions for making measurements and tests is as follows; ambient temperature : 15?? to 35?? relative humidity : 25% to 85% air pressure : 86kpa to 106kpa operating temperature rang operating temperature rang is the rang of ambient temperatures in which the filter can be operated continuously. - 10?? ~ +60?? storage temperature rang storage temperature rang is the rang of ambient temperatures at which the filter can be stored without damage. conditions are as specified elsewhere in these specifications. - 40?? ~ +70?? reference temperature +25?? 3.1 maximum rating dc voltage vdc 12 v between any terminals ac voltage vpp 10 v between any terminals
3.2 electrical characteristics characteristics in l/l ? mode (switching input pin 10 connected to input 1) source impedance zs=50|? load impedance z l =2k|?//3pf t a =25?? item freq min typ max insertion attenuation reference level 37.40mhz 13.7 15.7 17.7 db 38.90mhz 3.9 5.4 6.9 db 33.90mhz 5.1 6.6 8.1 db 34.47mhz - 0.7 0.8 2.3 db 30.90mhz 42.0 55.0 - db 32.40mhz 42.0 54.0 - db 32.90mhz 40.0 50.0 - db 40.40mhz 42.0 53.0 - db relative attenuation 41.90mhz 40.0 48.0 - db 25.00~32.90mhz 35.0 44.0 db sidelobe 40.40~45.00mhz 35.0 43.0 db temperature coefficient - 72 ppm/k characteristics in b/g mode (switching input pin 10 connected to ground input 2) source impedance zs=50|? load impedance z l =2k|?//3pf t a =25?? item freq min typ max insertion attenuation reference level 37.40mhz 13.5 15.5 17.5 db 38.90mhz 4.2 5.7 7.2 db 34.47mhz - 0.2 1.3 2.8 db 33.40mhz 32.0 42.0 - db 30.90mhz 42.0 55.0 - db 31.90mhz 42.0 55.0 - db 32.40mhz 44.0 50.0 - db relative attenuation 40.15mhz 35.0 42.0 - db
40.40mhz 42.0 53.0 - db 41.40mhz 40.0 48.0 - db 25.00~31.90mhz 35.0 47.0 db sidelobe 40.40~45.00mhz 35.0 44.0 db temperature coefficient - 72 ppm/k 3.3 environmental performance characteristics item test condition allowable change of absolute level at center frequency(db) high temperature test 70?? 1000h < 1.0 low temperature test - 40?? 1000h < 1.0 h umidity test 40?? 90- 95% 1000h < 1.0 thermal shock - 20??==25??==80?? 20 cycle 30m 10m 30m < 1.0 solder temperature test sold temp.260?? for 10 sec. < 1.0 soldering immerse the pins melt solder at 260??+5/- 0?? for 5 sec. more then 95% of total area of the pins should be covered with solder 3.4 mechanical test item test condition allowable change of absolute level at center frequency(db) vibration test 600- 3300rpm amplitude 1.5mm 3 directions 2 h each <1.0 drop test on maple plate from 1 m high 3 times <1.0 lead pull test pull with 1 kg force for 30 seconds <1.0 lead bend test 90 o bending with 500g weigh 2 times <1.0
3.5 voltage discharge test item test condition allowable change of absolute level at center frequency(db) surge test between any two electrode <1.0 3.6 frequency respons e
|