237.5MHz SAW Filter 5MHz Bandwidth China Electronics Technology Group Corporation No.26 Research Institute SIPAT Co., Ltd. Part Number: LBS23701 www.sipatsaw.com Specifications Parameter Unit Minimum Typical Maximum Center Frequency MHz 237.35 237.5 237.65 Insertion Loss dB - 29 30 1 dB Bandwidth MHz - 4.81 - 3 dB Bandwidth MHz 5 5.02 - MHz - 5.65 5.7 40 dB Bandwidth MHz - 5.78 5.9 50 dB Bandwidth MHz - 5.87 - Passband Variation dB - 0.4 0.7 Absolute Delay usec - 3.94 4 Ultimate Rejection dB 45 50 - Material Temperature coefficient KHz/°C 0.2375 Ambient Temperature °C 25 DIP3512 (35.0x12.8x4.7mm3) Package Size Notes: 1. All specifications are based on the test circuit shown 2. In production, devices will be tested at room temperature to a guardbanded specification to ensure electrical compliance over temperature 3. Electrical margin has been built into the design to account for the variations due to temperature drift and manufacturing tolerances 4. This is the optimum impedance in order to achieve the performance show Matching Configuration L1 INPUT 50Ω L1=27nH L2 OUTPUT 50Ω C1=27pF L2=18nH C2=(22+6.8)pF Source/Load Impedance=50 ohm C1 C2 Notes - Component values may change depending on board layout. SIPAT Co., Ltd. ( CETC No. 26 Research Institute ) Nanping Huayuan Road No. 14 Chongqing, China, 400060 Phone: +86-23-62808818 Part Number LBS23701 Rev. Date 2006-5-23 Rev. 1.0 Fax: +86-23-62805284 Page 1/3 www.sipatsaw.com / [email protected] 237.5MHz SAW Filter 5MHz Bandwidth China Electronics Technology Group Corporation No.26 Research Institute SIPAT Co., Ltd. Part Number: LBS23701 www.sipatsaw.com Package Dimension 35.00±0.5 12.80±0.5 4.7 4.5 0.45±0.05 2.54±0.2 2.54±0.2 Input 1 Output 5 Ground 2,3,4,6 Unit: mm SIPAT Co., Ltd. ( CETC No. 26 Research Institute ) Nanping Huayuan Road No. 14 Chongqing, China, 400060 Phone: +86-23-62808818 5 6 1 Package: DIP3512 7.62±0.2 4 3 2 25.40±0.2 Part Number LBS23701 Rev. Date 2006-5-23 Rev. 1.0 Fax: +86-23-62805284 Page 2/3 www.sipatsaw.com / [email protected] 237.5MHz SAW Filter 5MHz Bandwidth China Electronics Technology Group Corporation No.26 Research Institute SIPAT Co., Ltd. Part Number: LBS23701 www.sipatsaw.com Typical Performance Frequency Respond Passband Respond -24 -28.8687 -25 -38.8687 -26 -48.8687 -27 -58.8687 -28 -29 -68.8687 -30 -78.8687 -31 -88.8687 -32 -98.8687 -108.8687 -33 229.5 231.5 233.5 235.5 237.5 239.5 241.5 243.5 233 245.5 234 235 236 237 238 239 240 241 Group Delay Variation(f0±2.4MHz) Phase Linearity(f0±2.4MHz) Smith Chart S11 Smith Chart S22 SIPAT Co., Ltd. ( CETC No. 26 Research Institute ) Nanping Huayuan Road No. 14 Chongqing, China, 400060 Phone: +86-23-62808818 Part Number LBS23701 Rev. Date 2006-5-23 Rev. 1.0 Fax: +86-23-62805284 242 Page 3/3 www.sipatsaw.com / [email protected]