saw bandpass filter 251905B part no. 251905B 1. features z if bandpass filter z high attenuation z single-ended operation z dip package z maximum storage temperature range : -40 ~ 85 z electrostatics sensitive device (esd) 2. package dimension 2.50.2 12.70.2 0.450.05 2.50.2 7.60.2 6.0max 5.5max 20.30.5 12.70.5 itf 04a001 251905B package : d2012 pin configuration 1 input 5 output 2, 4 ground 3, 6 case ground dimensions shown are nominal in millimeters base : fe(spcc), au plating over ni plated cap : cu & cr alloy, ni plated termination : kovar, au plated rev. date 2004-09-23 i t f co., ltd. 102-901, bucheon technopark 364, samjeong-dong, ojeong-gu, bucheon-city, gyounggi-do, korea 421-809 rev. nm4017- cs03 1/5
saw bandpass filter 251905B part no. 251905B 3. specifications fo = 190.0 mhz terminating source impedance : 50 and matching network terminating load impedance : 50 and matching network minimum typical maximum center frequency mhz 189.9 190.0 190.1 insertion loss db - 26.0 28.0 1db bandwidth mhz - 19.0 - 3db bandwidth mhz 19.0 19.4 - 50db bandwidth mhz - 21.3 21.6 amplitude ripple (fo +/- 9.375 mhz) db - 0.7 1.2 group delay variation (fo +/- 9.375 mhz) nsec - 50 100 absolute delay usec - 2.85 - ultimate rejection db 48 52 - temperature coefficient of frequency ppm/c - -23 - notes : 1) all specifications are based on the matching schematic shown below 2) all specifications are measured by agilent network an alyzer and full 2 port calibration at room temperature 3) all attenuation measurements are m easured relative to insertion loss i t f co., ltd. rev. date 2004-09-23 102-901, bucheon technopark 364, samjeong-dong, ojeong-gu, bucheon-city, gyounggi-do, korea 421-809 rev. nm4017- cs03 2/5
saw bandpass filter 251905B part no. 251905B 4. matching schematic ( actual matching values may vary due to pcb layout and parasitics ) c2 c1 l2 l1 input 50 output 50 l1 = 33 nh, l2 = 27 nh c1 = 36 pf, c2 = 43 pf 5. marking configuration itf 1) 04a001 2) 251905B 3) 1) manufacturer name 2) lot number 3) part number rev. date 2004-09-23 i t f co., ltd. 102-901, bucheon technopark 364, samjeong-dong, ojeong-gu, bucheon-city, gyounggi-do, korea 421-809 rev. nm4017- cs03 3/5
saw bandpass filter 251905B part no. 251905B 6. typical performance ( at +25 ) rev. date 2004-09-23 i t f co., ltd. 102-901, bucheon technopark 364, samjeong-dong, ojeong-gu, bucheon-city, gyounggi-do, korea 421-809 rev. nm4017- cs03 4/5 ch1 s21 log 1 db/ ref -25.95 db cor ch2 s21 del 100 ns/ ref 2.84 us center 190 . 000 000 mhz span 23. 000 000 mhz cor smo 29 jun 2004 16:58:49 1 2 3 4 1: 0. 0000 db 0. 000 000 mhz ref=1 ch1 markers bw: 19. 441126 mhz cent : 189 . 972538 mhz q: 9. 7717 1_loss : -26 . 461 db 2 3 3: 13. 182 ns 18. 750 000 mhz ref=2 ch2 markers mean : 2. 8591 us s. dev : 9. 9720 ns p-p : 48. 562 ns ch1 s21 log 10 db/ ref -26.4 db center 190 . 000 000 mhz span 53. 000 000 mhz cor 9 jul 2004 09:05:05 1 2 3 4 1: 0. 0000 db 0. 000 000 mhz ref=1 ch1 markers bw: 21. 229441 mhz cent : 190 . 020303 mhz q: 8. 9508 1_loss : -26 . 405 db
saw bandpass filter 251905B part no. 251905B ch1 ch1 s21 log 10 db/ ref -26.7 db start . 010 000 mhz stop 600 . 000 000 mhz 29 jun 2004 17:02:08 1 1: -26 . 511 db 190 . 000 000 mhz rev. date 2004-09-23 i t f co., ltd. 102-901, bucheon technopark 364, samjeong-dong, ojeong-gu, bucheon-city, gyounggi-do, korea 421-809 rev. nm4017- cs03 5/5 s21 log 1 db/ ref -25.95 db cor ch2 s21 log 1 db/ ref -26.59 db center 190 . 000 000 mhz span 23. 000 000 mhz cor 29 jun 2004 16:58:25 1 2 3 4 1: 0. 0000 db 0. 000 000 mhz ref=1 ch1 markers bw: 19. 127145 mhz cent : 189 . 968350 mhz q: 9. 9319 1_loss : -26 . 471 db 2 3 3: - . 27300 db 18. 750 000 mhz ref=2 ch2 markers mean : -26 . 340 db s. dev : . 13170 db p-p : . 75000 db ch1 s11 swr 5 / ref 1.369 center 190 . 000 000 mhz span 53. 000 000 mhz cor ch2 swr 5 / ref 2.793 cor s22 29 jun 2004 17:00:45 1 1: 1. 3696 190 . 000 000 mhz 2 2: 2. 7510 190 . 000 000 mhz ch1 s11 1 u fs cor ch2 s22 1 u fs center 190 . 000 000 mhz span 53. 000 000 mhz cor 29 jun 2004 17:00:52 1 1: 67. 500 5. 6133 4. 7020 nh 190 . 000 000 mhz 2 2: 20. 410 15. 993 13. 397 nh 190 . 000 000 mhz
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