297.5MHz SAW Filter 35MHz Bandwidth China Electronics Technology Group Corporation No.26 Research Institute SIPAT Co., Ltd. Part Number: www.sipatsaw.com LB297DS01 Specifications Parameter Unit Minimum Typical Center Frequency MHz 297.5 Insertion Loss dB 12.5 1 dB Bandwidth MHz 3 dB Bandwidth MHz 38.9 35 dB Bandwidth MHz 44.2 Passband Variation dB 0.6 Ultimate Rejection(f0±35MHz) dB Group Delay Variation nsec 35 Maximum 14 37.3 35 67 40 60 YZ Subatrate Material °C Ambient Temperature 25 SMD7.0*5.0 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 L2 C1 L1=39nH L2=27nH C1=10pF C2=12pF C2 Source/Load Impedance=50 ohm 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: +86-23-62920684 Part Number LB297DS01 Rev. Date 2011-2-14 Rev. 4.1 Fax: +86-23-62805284 Page 1/3 www.sipatsaw.com / [email protected] 297.5MHz SAW Filter 35MHz Bandwidth China Electronics Technology Group Corporation No.26 Research Institute SIPAT Co., Ltd. Part Number: www.sipatsaw.com LB297DS01 Package Dimension 7.00±0.15 10 6 5 SIPAT LB297DS01 XXYYZZ 2 4 3 0.80 1 5.00±0.15 9 7 1.50±0.15 8 0.60 1 1.00 2 3 4 9 5 2.54 10 8 7 6 1.27 Input:9 Output:4 SIPAT Co., Ltd. ( CETC No. 26 Research Institute ) Nanping Huayuan Road No. 14 Chongqing, China, 400060 Phone: +86-23-62920684 Part Number LB297DS01 Rev. Date 2011-2-14 Rev. 4.1 Fax: +86-23-62805284 Page 2/3 www.sipatsaw.com / [email protected] 297.5MHz SAW Filter 35MHz Bandwidth China Electronics Technology Group Corporation No.26 Research Institute SIPAT Co., Ltd. Part Number: www.sipatsaw.com LB297DS01 Typical Performance Frequency Respond Passband Respond -12.345 -8 -22.345 -9 -10 -32.345 -11 -42.345 -12 -13 -52.345 -14 -62.345 -15 -72.345 -16 -17 -82.345 237 252 267 282 297 312 327 342 2.5 357 Wideband Respond 2.6 2.7 2.8 2.9 3 f scale=10MHz 3.1 3.2 3.3 3.4 8 x 10 Group delay variation(f0±16MHz) -22.8275 -32.8275 -42.8275 -52.8275 -62.8275 -72.8275 -82.8275 -92.8275 200.9 400.8 600.7 800.6 1000.5 VSWR 1200.4 1400.3 1600.2 1800.1 S11 VSWR SIPAT Co., Ltd. ( CETC No. 26 Research Institute ) Nanping Huayuan Road No. 14 Chongqing, China, 400060 Phone: +86-23-62920684 S22 Part Number LB297DS01 Rev. Date 2011-2-14 Rev. 4.1 Fax: +86-23-62805284 Page 3/3 www.sipatsaw.com / [email protected]