245.0 MHz SAW Filter Part Number 261852B 1. Features Typical 1dB bandwidth of 18.5 MHz High attenuation Single Ended Operation Surface Mounted Package (SMD) 2. Electrical Specifications Source and Load Impedance = 50Ω Room Temperature: +25℃ ℃ Minimum Typical Maximum MHz - 245.0 - dB - 27.0 28.5 1dB Bandwidth MHz 18.4 18.52 - 3dB Bandwidth MHz - 18.95 - 40dB Bandwidth MHz - 20.86 21.0 dB - 0.6 1.2 Group Delay Variation (Fo±9.0MHz) nsec - 25 60 Absolute Delay usec - 2.16 - dB 45 52 - ppm/℃ ℃ - -18 - Center Frequency (fo) Insertion Loss Amplitude Ripple (Fo±9.0MHz) Ultimate Rejection Temperature Coefficient of Frequency S1365 Package Dimension 13.30±0.2 8 7.62±0.1 7 ITF 13A001 261852B 。245-18.5M 11 12 1 2 3 7 9 8 L1 10 11 6 6 1.50±0.1 5 4 5 2.54±0.1 9 1.61±0.2 6.50±0.2 10 Matching Schematic 3 2 2.54±0.1 5 L3 Input 50Ω Output 50Ω C1 L2 12 4 11 1 0.80±0.1 L1 = 8.2nH, L2 = 10nH, L3 = 15nH, C1 = 20pF Dimensions shown are nominal in millimeters Pin Configuration Body : Al2O3 Lid : Kovar, Ni Plated Termination : Au plating 0.3 ~ 1.0um, over a 1.27 ~ 8.89um Ni Plating 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 11 Ground 6, 12 Output 5 Others Ground http://www.itf.co.kr [email protected] 2013. 03. 27 Rev 1.0 245.0 MHz SAW Filter Part Number 261852B 3. Typical Performance ( at +25℃ ℃) 1dB Bandwidth & Ripple CH2 S21 CH4 S21 LOG LOG 1 dB/ 1 dB/ 40dB Bandwidth 23 Mar 2012 07:22:39 1: 0. 0000 dB 0. 000 000 MHz 3: . 06970 dB 18. 000 000 MHz REF -26.82 dB REF -26.97 dB BW: CH1 S21 CH2 Markers REF=1 18. 521936 MHz LOG 10 dB/ 23 Mar 2012 04:04:42 1: 0. 0000 dB 0. 000 000 MHz REF -27.16 dB PRm BW: 1 cent : 245 . 044847 MHz Q: 13. 230 CH1 Markers REF=1 20. 860078 MHz cent : 245 . 031682 MHz Q: 11. 746 2 1_loss : -26 . 907 dB 1_loss : -27 . 073 dB 1 Cor 2 3 4 3 PRm CH4 Markers mean: -26 REF=2 . 938 dB 1 2 3 4 s. dev : . 11460 dB p-p : . 57430 dB Cor CENTER 245 . 000 000 MHz SPAN 30. 000 000 MHz 2 4 CENTER 245 . 000 000 MHz 3dB Bandwidth & Group Delay CH2 S21 CH4 S21 LOG DEL 1 dB/ 150 ns/ Smith Chart 23 Mar 2012 07:23:44 1: 0. 0000 dB 0. 000 000 MHz 3: 11. 088 ns 18. 000 000 MHz REF -26.82 dB REF 2.091 us BW: SPAN 60. 000 000 MHz CH1 S11 CH3 S22 CH2 Markers REF=1 18. 961029 MHz 1: 57. 697 2: 33. 398 1 U FS 1 U FS 23 Mar 2012 04:05:30 14. 809 nH 245. 000 000 MHz 10. 961 nH 245. 000 000 MHz 22. 797 16. 873 PRm cent : 245 . 050838 MHz Q: 12. 924 1_loss : -26 . 905 dB 1 Cor 2 2 1 3 1 2 PRm 3 4 CH4 Markers mean: 2. REF=2 0914 us s. dev : 5. 5871 ns Smo p-p : 24. 414 ns Cor CENTER 245 . 000 000 MHz SPAN 30. 000 000 MHz 4 2 CENTER 245. 000 000 MHz Wide band Properties CH1 S21 LOG 10 dB/ REF -27.98 dB SPAN 60. 000 000 MHz SWR(S11 & S22) 23 Mar 2012 04:08:00 1:-27 . 917 dB 245 . 000 000 MHz CH1 S11 CH3 S22 SWR SWR 1 / 1 / 23 Mar 2012 04:06:00 1: 1. 5604 245 . 000 000 MHz 2: 1. 7704 245 . 000 000 MHz REF 1.561 REF 1.771 PRm PRm 1 1 Cor 2 START . 010 000 MHz STOP 800 . 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 CENTER 245 . 000 000 MHz http://www.itf.co.kr SPAN 60. 000 000 MHz [email protected] 2013. 03. 27 Rev 1.0