250MHz SAW Filter 3MHz Bandwidth China Electronics Technology Group Corporation No.26 Research Institute SIPAT Co., Ltd. Part Number: LBT25004 www.sipatsaw.com Features For RF SAW filter Single-ended operation Ceramic Surface Mount Package Small size No matching required for operation at 50Ω RoHS compliant (2002/95/EC), Pb-free Specifications Parameter Unit Minimum Typical Maximum Center Frequency MHz - 250 - Insertion Loss dB - 2.2 3 1 dB Bandwidth MHz 2.5 3.14 - 3 dB Bandwidth MHz 3.2 3.99 - Passband Variation(248.75～251.25MHz) dB - 1 1.5 Absolute Delay usec - 0.33 - 1～239MHz dB 35 54 - 260～300MHz dB 35 50 - Ultimate Rejection Material Temperature coefficient KHz/°C -8.0 Substrate Material - 36LT Ambient Temperature °C 25 DC Voltage V 0 Input Power dBm ESD Class - - - 10 1A SMD3.8*3.8 Package Size Notes: 1. All specifications are based on the test circuit shown; 2. In production, all specifications are measured by Agilent Network analyzer and full 2 port calibration at room 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. SIPAT Co., Ltd. ( CETC No.26 Research Institute ) #14 Nanping Huayuan Road, Chongqing, China, 400060 Tel: +86-23-62808818 Part Number LBT25004 Rev. Date 2010-12-24 Ver. 1.0 Fax: +86-23-62808382 Page www.sipatsaw.com / [email protected] 1/3 250MHz SAW Filter 3MHz Bandwidth China Electronics Technology Group Corporation No.26 Research Institute SIPAT Co., Ltd. Part Number: LBT25004 www.sipatsaw.com Matching Configuration Source/Load Impedance=50 ohm OUTPUT 50Ω INPUT 50Ω Notes - Component values may change depending on board layout. Package Dimension 3.80 0.15 Pad Configuration: 8 Input: 7 1 Output: 6 3.80 0.15 6 2 SIPAT 25004 XXYYZZ 2 Ground: All Others 5 3 1.50 0.25 4 Marking Configuration: 1) •: Pad Number 1 Index 2) SIPAT: Manufacturer Name 1.00 0.15 3) 25004: Part Number 8 4) XXYY: Date(Year/month) 7 1 5) ZZ: Identified Code 2 6 1.27 3 5 0.60 4 Package: SMD3.8*3.8 Unit: mm SIPAT Co., Ltd. ( CETC No.26 Research Institute ) #14 Nanping Huayuan Road, Chongqing, China, 400060 Tel: +86-23-62808818 Part Number LBT25004 Rev. Date 2010-12-24 Ver. 1.0 Fax: +86-23-62808382 Page www.sipatsaw.com / [email protected] 2/3 250MHz SAW Filter 3MHz Bandwidth China Electronics Technology Group Corporation No.26 Research Institute SIPAT Co., Ltd. Part Number: LBT25004 www.sipatsaw.com Typical Performance Frequency Response Passband Response Type Performance Type Performance 7.7987 -0.7013 -2.2013 -1.2013 -12.2013 -1.7013 -2.2013 A m plitude ripple(dB ) -32.2013 -42.2013 -52.2013 -2.7013 -3.2013 -62.2013 -3.7013 -72.2013 -4.2013 -82.2013 -92.2013 235 240 245 250 Frequency(MHz) Horizontal: 5MHz/Div 255 260 -4.7013 246 265 Vertical: 10dB/Div 247 248 249 250 Frequency(MHz) 251 Horizontal: 1MHz/Div Group Delay Variation(f0±1.5MHz) 252 253 254 Vertical: 0.5dB/Div Phase Linearity(f0±1.5MHz) Type Performance Type Performance 1400 40 1200 30 1000 20 800 10 600 X: 251.5 Y: 424.1 X: 248.5 Y: 410.8 Degree(deg) G roup Delay T im e(ns ) X: 250 Y: 317.5 400 X: 248.5 Y: 2.352 X: 250 Y: 0.451 0 X: 251.5 Y: -4.834 200 -10 0 -20 -200 -400 -30 -600 250 Frequency(MHz) 251 Horizontal: 1MHz/Div 252 -40 247 253 Vertical: 200ns/Div 248 249 Vertical: 10deg/Div +j0.5 +j2.0 0.0 ∞ -j0.2 -j5.0 -j0.5 +j5.0 0.5 5.0 2.0 -j0.2 +j2.0 +j0.2 +j5.0 0.2 +j0.2 1.0 253 +j1.0 +j0.5 0.5 252 Smith Chart S22 +j1.0 ∞ -j5.0 -j0.5 -j2.0 -j2.0 -j1.0 -j1.0 SIPAT Co., Ltd. ( CETC No.26 Research Institute ) #14 Nanping Huayuan Road, Chongqing, China, 400060 Tel: +86-23-62808818 251 Horizontal: 1MHz/Div Smith Chart S11 0.0 250 Frequency(MHz) 5.0 249 2.0 248 1.0 247 0.2 Magnitude(dB) -22.2013 Part Number LBT25004 Rev. Date 2010-12-24 Ver. 1.0 Fax: +86-23-62808382 Page www.sipatsaw.com / [email protected] 3/3