SAW Bandpass Filter 251908B 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) 5.5max 6.0max Package : D2012 Pin Configuration 1 Dimensions shown are nominal in millimeters 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 12.7±0.2 2.5±0.2 7.6±0.2 0.45±0.05 ITF 05A001 251908B 20.3±0.5 12.7±0.5 2.5±0.2 2. Package Dimension Input 5 Output 2, 4 Ground 3, 6 Case ground Part No. 251908B Rev. Date 2005-03-07 Rev. NM5008-CS01 1/5 SAW Bandpass Filter 251908B 3. Specifications Fo = 140.0 MHz Terminating source impedance : 50Ω and matching network Terminating load impedance : 50Ω and matching network Minimum Typical Maximum MHz 139.85 140.0 140.15 dB - 27.0 28.0 1dB Bandwidth MHz - 19.1 - 3dB Bandwidth MHz 19.4 19.55 - 10dB Bandwidth MHz - 20.2 20.3 40dB Bandwidth MHz 21.1 21.3 Center Frequency Insertion Loss Amplitude Ripple (Fo +/- 9.375 MHz) dB - 0.8 1.2 Group Delay Variation (Fo +/- 9.375 MHz) nsec - 30 100 Absolute Delay usec - 3.2 - Ultimate Rejection dB 50 52 - ppm/°C2 - -23 - Temperature Coefficient of Frequency Notes : 1) All specifications are based on the matching schematic shown below 2) All specifications are measured by Agilent Network analyzer and full 2 port calibration at room temperature 3) All attenuation measurements are measured relative to insertion loss I T F Co., Ltd. 102-901, Bucheon Technopark 364, Samjeong-Dong, Ojeong-Gu, Bucheon-City, Gyounggi-Do, Korea 421-809 Part No. 251908B Rev. Date 2005-03-07 Rev. NM5008-CS01 2/5 SAW Bandpass Filter 251908B 4. Matching Schematic ( Actual matching values may vary due to PCB layout and parasitics ) L1 Input 50Ω L4 L2 Output 50Ω L3 L1 = 82nH, L2 = 68 nH L3 = 68nH, L4 = 68 nH 5. Marking Configuration ITF1) 05A0012) 251908B3) 1) Manufacturer name 2) Lot Number 3) Part Number I T F Co., Ltd. 102-901, Bucheon Technopark 364, Samjeong-Dong, Ojeong-Gu, Bucheon-City, Gyounggi-Do, Korea 421-809 Part No. 251908B Rev. Date 2005-03-07 Rev. NM5008-CS01 3/5 SAW Bandpass Filter 251908B 6. Typical Performance ( at +25℃ ) CH1 S21 LOG 10 dB/ 5 Mar 2005 13:04:59 1: 0. 0000 dB 0. 000 000 MHz REF -27.05 dB CH1 Markers 1 Cor 2 BW: 21. 107424 MHz cent : 139 . 974967 MHz REF=1 Q: 6. 6316 1_loss : -27 . 192 dB 3 4 START 113 . 500 000 MHz CH1 CH2 S21 S21 LOG DEL 1 dB/ 100 ns/ STOP 166 . 500 000 MHz 5 Mar 2005 13:08:29 1: 0. 0000 dB 0. 000 000 MHz 3: -5 . 5957 ns 18. 750 000 MHz REF -27.05 dB REF 3.193 us CH1 Markers BW: Cor 19. 604835 MHz cent : 139 . 985512 MHz REF=1 Q: 7. 1404 1 1_loss : -27 . 131 dB 2 3 Smo Cor 3 2 4 CH2 Markers mean : 3. 2032 us REF=2 s. dev : 4. 8163 ns p-p : 25. 210 ns CENTER 140 . 000 000 MHz I T F Co., Ltd. 102-901, Bucheon Technopark 364, Samjeong-Dong, Ojeong-Gu, Bucheon-City, Gyounggi-Do, Korea 421-809 SPAN 23. 000 000 MHz Part No. 251908B Rev. Date 2005-03-07 Rev. NM5008-CS01 4/5 SAW Bandpass Filter 251908B CH1 CH2 S21 S21 LOG LOG 1 dB/ 1 dB/ 5 Mar 2005 13:07:53 1: 0. 0000 dB 0. 000 000 MHz 3: . 04010 dB 18. 750 000 MHz REF -27.05 dB REF -27.39 dB CH1 Markers BW: Cor 19. 198583 MHz cent : 139 . 988173 MHz CH1 S21 LOG 10 dB/ 5 Mar 2005 13:12:17 1: 0. 0000 dB 0. 000 000 MHz REF -27.16 dB REF=1 CH1 Markers 2: -64 . 595 dB 140 . 000 MHz Q: 7. 2916 1 3: -60 . 002 dB 280 . 000 MHz 1 1_loss : -27 . 128 dB REF=1 2 3 4 3 2 Cor CH2 Markers REF=2 mean : -27 . 263 dB s. dev : . 10730 dB p-p : . 45230 dB CENTER 140 . 000 000 MHz CH1 CH2 S11 S22 SWR SWR 5 / 5 / SPAN 5 Mar 2005 13:11:18 1: 2. 0374 140 . 000 000 MHz 2: 3. 4299 140 . 000 000 MHz REF 2.038 REF 3.431 3 2 23. 000 000 MHz START CH1 CH2 S11 S22 . 010 000 MHz 1 U FS 1 U FS STOP 500 . 000 000 MHz 1: 24. 696 2: 47. 131 -3 . 4697 -63 . 705 5 Mar 2005 13:11:25 327 . 64 pF 140 . 000 000 MHz 17. 845 pF 140 . 000 000 MHz Cor Cor 1 1 Cor Cor 2 2 START 113 . 500 000 MHz STOP 166 . 500 000 MHz I T F Co., Ltd. 102-901, Bucheon Technopark 364, Samjeong-Dong, Ojeong-Gu, Bucheon-City, Gyounggi-Do, Korea 421-809 CENTER 140 . 000 000 MHz SPAN 53. 000 000 MHz Part No. 251908B Rev. Date 2005-03-07 Rev. NM5008-CS01 5/5