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China Electronics Technology Group Corporation No.26 Research Institute 238MHz SAW Filter 6MHz Bandwidth Part Number: LBS23801 www.sipatsaw.com SIPAT Co., Ltd. Specifications Parameter Center Frequency Insertion Loss 3 dB Bandwidth 45 dB Bandwidth Passband Variation Absolute Delay Ultimate Rejection Material Temperature coefficient Ambient Temperature Package Size Unit MHz dB MHz MHz dB usec Minimum 237.85 6 45 Typical 238 24.8 6.1 8.17 0.8 2.109 47 0.238 25 Maximum 238.15 27 8.2 0.9 - dB KHz/C C DIP2712 (27.0x12.8x4.7mm3) 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 L1=L2=39nH C1=12pF C2=33pF C1 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 Part Number Rev. Date Rev. LBS23801 2005-9-16 1.0 Page 1/3 Phone: +86-23-62920684 Fax: +86-23-62805284 www.sipatsaw.com / sawmkt@sipat.com China Electronics Technology Group Corporation No.26 Research Institute 238MHz SAW Filter 6MHz Bandwidth Part Number: LBS23801 www.sipatsaw.com SIPAT Co., Ltd. Package Dimension 27.000.5 12.800.5 4.7 4.5 0.450.05 2.540.2 7.620.2 3 6 2 1 4 5 17.700.2 2.540.2 Input:1 Output:5 SIPAT Co., Ltd. ( CETC No. 26 Research Institute ) Nanping Huayuan Road No. 14 Chongqing, China, 400060 Part Number Rev. Date Rev. LBS23801 2005-9-16 1.0 Page 2/3 Phone: +86-23-62920684 Fax: +86-23-62805284 www.sipatsaw.com / sawmkt@sipat.com China Electronics Technology Group Corporation No.26 Research Institute 238MHz SAW Filter 6MHz Bandwidth Part Number: LBS23801 www.sipatsaw.com SIPAT Co., Ltd. Typical Performance Frequency Respond -24.7858 Passband Respond -20 -34.7858 -21 -22 -44.7858 -23 -54.7858 -24 -64.7858 -25 -74.7858 -26 -27 -84.7858 -28 -94.7858 -29 -104.7858 226 229 232 235 238 241 244 247 250 233 234 235 236 237 238 239 240 241 242 243 Group Delay Variation(f02.7MHz) Phase Linearity(f02.7MHz) Smith Chart S11 Smith Chart S22 SIPAT Co., Ltd. ( CETC No. 26 Research Institute ) Nanping Huayuan Road No. 14 Chongqing, China, 400060 Part Number Rev. Date Rev. LBS23801 2005-9-16 1.0 Page 3/3 Phone: +86-23-62920684 Fax: +86-23-62805284 www.sipatsaw.com / sawmkt@sipat.com |
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