145.0 MHz SAW Filter Part Number 251925B 1. Features Typical 1dB bandwidth of 19.3 MHz High attenuation Single Ended Operation Dual In-line Package (DIP) 2. Electrical Specifications Source and Load Impedance = 50Ω Room Temperature : +25℃ ℃ Minimum Typical Maximum MHz - 145.0 - dB - 26.5 28.0 1 dB Bandwidth MHz 19.15 19.36 - 3dB Bandwidth MHz - 19.68 - 20dB Bandwidth MHz - 20.6 20.65 40dB Bandwidth MHz - 21.05 - dB - 1.1 1.5 Group Delay Variation (fo ± 9.4 MHz) nsec - 40 80 Absolute Delay usec - 2.08 - dB 40 45 - dBm - - 10 Center Frequency (fo) Insertion Loss Amplitude Ripple (fo ± 9.4 MHz) Ultimate Rejection Maximum input Power ppm/℃ ℃ Temperature Coefficient of Frequency -72 5.5max 6.0max 5 1 L1 Input 50Ω L2 C1 Output 50Ω C2 12.7±0.2 2.5±0.2 7.6±0.2 0.45±0.05 ITF 13A001 251925B 140-19.3M 20.3±0.5 12.7±0.5 Matching Schematic 2.5±0.2 D2012 Package Dimension L1 = 27nH, L2 = 27nH, C1 = 36pF, C2 = 27pF Dimensions shown are nominal in millimeters Pin Configuration Base : Fe(SPCC), Au plating over Ni plated Cap : Cu & Cr Alloy, Ni Plated Termination : Kovar, Au Plated I T F Co., Ltd. 102-901, Bucheon Technopark 364, Samjeong-Dong, Ojeong-Gu, Bucheon-City, Gyounggi-Do, Korea 421-809 Tel: 82-32-621-1213 Fax: 82-32-621-1218 Input 1 Ground 2,4 Output 5 Others Ground http://www.itf.co.kr [email protected] 2013. 03. 27 Rev 1.0 145.0 MHz SAW Filter Part Number 251925B 3. Typical Performance ( at +25℃ ℃) 1dB Bandwidth & Ripple CH1 S21 CH2 S21 LOG LOG 1 dB/ 1 dB/ 40dB Bandwidth 26 Mar 2012 03:44:45 1: 0. 0000 dB 0. 000 000 MHz 3:- . 57970 dB 18. 800 000 MHz REF -26.72 dB REF -26.98 dB CH1 S21 LOG 10 dB/ 26 Mar 2012 03:40:22 1: 0. 0000 dB 0. 000 000 MHz REF -26.72 dB CH1 Markers REF=1 BW: 19. 365416 MHz cent : 145 . 073145 MHz Cor cent : 145 . 093891 MHz Q: 7. 4914 1 CH1 Markers REF=1 BW: 21. 055785 MHz 1 Cor 2 Q: 6. 8909 1_loss : -26 . 566 dB 1_loss : -26 . 684 dB 2 3 4 3 2 CH2 Markers REF=2 mean:-26 . 589 dB Cor 3 4 s. dev : . 24960 dB p-p : 1. 1227 dB CENTER 145 . 000 000 MHz SPAN 24. 000 000 MHz CENTER 145 . 000 000 MHz 3dB Bandwidth & Group Delay CH1 S21 CH2 S21 LOG DEL 1 dB/ 50 ns/ 20dB Bandwidth 26 Mar 2012 03:45:01 1: 0. 0000 dB 0. 000 000 MHz 3: 4. 5779 ns 18. 800 000 MHz REF -26.72 dB REF 2.119 us SPAN 70. 000 000 MHz CH1 S21 LOG 10 dB/ 26 Mar 2012 03:41:45 1: 0. 0000 dB 0. 000 000 MHz REF -26.72 dB CH1 Markers REF=1 BW: 19. 688645 MHz cent : 145 . 087998 MHz Cor cent : 145 . 094359 MHz Q: 7. 3691 1 CH1 Markers REF=1 BW: 20. 602724 MHz 1 Cor 2 Q: 7. 0425 1_loss : -26 . 552 dB 1_loss : -26 . 684 dB 2 3 4 3 Smo 3 CH2 4 Markers REF=2 mean: 2. 0875 us 2 Cor s. dev : 6. 9789 ns p-p : 33. 061 ns CENTER 145 . 000 000 MHz SPAN 24. 000 000 MHz CENTER 145 . 000 000 MHz Wideband Properties CH1 S21 LOG 10 dB/ SWR(S11 & S22) 26 Mar 2012 03:47:34 1: 0. 0000 dB 0. 000 000 MHz REF -28.67 dB SPAN 70. 000 000 MHz CH1 Markers REF=1 2:-69 . 204 dB 145. 000 MHz CH1 S11 CH2 S22 SWR SWR 10 / 10 / 26 Mar 2012 03:46:12 1: 7. 3523 145 . 000 000 MHz 2: 7. 1289 145 . 000 000 MHz REF 7.35 REF 7.131 Cor 3:-67 . 398 dB 290. 000 MHz 1 1 Cor START . 010 000 MHz 2 3 STOP 600 . 000 000 MHz I T F Co., Ltd. 102-901, Bucheon Technopark 364, Samjeong-Dong, Ojeong-Gu, Bucheon-City, Gyounggi-Do, Korea 421-809 Tel: 82-32-621-1213 Fax: 82-32-621-1218 2 CENTER 145 . 000 000 MHz http://www.itf.co.kr SPAN 70. 000 000 MHz [email protected] 2013. 03. 27 Rev 1.0