70MHz SAW Filter 9MHz Bandwidth China Electronics Technology Group Corporation No.26 Research Institute SIPAT Co., Ltd. Part Number: LBT70A74 www.sipatsaw.com Features For IF SAW filter Single-ended operation Ceramic Surface Mount Package Small size RoHS compliant (2002/95/EC), Pb-free Specifications Parameter Unit Minimum Typical Maximum Center Frequency MHz 69.85 70 70.15 Insertion Loss dB - 26.9 28 1.2 dB Bandwidth MHz - 9.25 - 3 dB Bandwidth MHz 9.4 9.47 - 35 dB Bandwidth MHz - 10.33 10.4 Passband Variation dB - 1 1.2 Absolute Delay usec - 2.28 2.4 Ultimate Rejection dB 35 37 - Material Temperature coefficient KHz/°C -1.3 Substrate Material - 112LT Ambient Temperature °C 25 Operating Temperature Range °C -25 - +85 Storage Temperature Range °C -45 - +105 DC Voltage V Input Power dBm ESD Class - 0 - - 10 1A SMD20*9.8 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 LBT70A74 Rev. Date 2011-05-13 Ver. 1.0 Fax: +86-23-62808382 Page www.sipatsaw.com / [email protected] 1/3 70MHz SAW Filter 9MHz Bandwidth China Electronics Technology Group Corporation No.26 Research Institute SIPAT Co., Ltd. Part Number: LBT70A74 www.sipatsaw.com Matching Configuration L1 INPUT 50 L1=(180+22)nH L2 10 OUTPUT 50 5 C1 L2=150nH C1=C2=33pF Source/Load Impedance=50 ohm C2 Notes - Component values may change depending on board layout. Package Dimension 20.00±0.20 Pad Configuration: 10 9 8 7 6 Input: 10 1 2 3 4 9.80±0.20 SIPAT LBT70A74 XXYYZZ Output: 5 Ground: 1,2,3,4,6,7,8,9 5 Marking Configuration: 1) •: Pad Number 1 Index 2 3 4 5 10 9 8 7 6 1.905 4) XXYY: Date(Year/month) 5) ZZ: Identified Code 1.02 Package: SMD20*9.8 Unit: mm SIPAT Co., Ltd. ( CETC No.26 Research Institute ) #14 Nanping Huayuan Road, Chongqing, China, 400060 Tel: +86-23-62808818 3) LBT70A74: Part Number 2.30 1 1.66±0.21 0.62 2) SIPAT: Manufacturer Name Part Number LBT70A74 Rev. Date 2011-05-13 Ver. 1.0 Fax: +86-23-62808382 Page www.sipatsaw.com / [email protected] 2/3 70MHz SAW Filter 9MHz Bandwidth China Electronics Technology Group Corporation No.26 Research Institute SIPAT Co., Ltd. Part Number: LBT70A74 www.sipatsaw.com Typical Performance Frequency Response Passband Response Type Performance Type Performance -16.8876 -25.3876 -26.8876 -25.8876 -36.8876 -26.3876 -26.8876 Amplitude ripple(dB) -56.8876 -66.8876 -76.8876 -27.3876 -27.8876 -86.8876 -28.3876 -96.8876 -28.8876 -106.8876 -116.8876 45 50 55 60 65 70 75 Frequency(MHz) Horizontal: 5MHz/Div 80 85 90 -29.3876 60 95 Vertical: 10dB/Div 62 64 66 68 70 Frequency(MHz) 72 Horizontal: 2MHz/Div Group Delay Variation(f0±4.5MHz) 74 76 78 80 Vertical: 0.5dB/Div Phase Linearity(f0±4.5MHz) Type Performance Type Performance 2600 15 2500 10 2400 5 X: 65.5 Y: 2286 2300 X: 74.5 Y: 1.832 X: 74.5 Y: 2263 Degree(deg) Group Delay Time(ns) X: 70 Y: 2281 2200 X: 65.5 Y: 1.532 0 X: 70 Y: -1.418 -5 2100 -10 2000 68 70 Frequency(MHz) 72 Horizontal: 2MHz/Div 74 76 78 -15 60 80 Vertical: 100ns/Div 62 64 66 68 +j2.0 80 +j5.0 0.0 0.5 ∞ -j5.0 -j0.2 +j2.0 +j0.2 0.2 2.0 1.0 78 Vertical: 5deg/Div +j0.5 +j5.0 +j0.2 0.5 76 +j1.0 +j0.5 ∞ -j5.0 -j0.2 -j2.0 -j2.0 -j0.5 -j1.0 -j1.0 SIPAT Co., Ltd. ( CETC No.26 Research Institute ) #14 Nanping Huayuan Road, Chongqing, China, 400060 Tel: +86-23-62808818 74 Smith Chart S22 +j1.0 -j0.5 72 Horizontal: 2MHz/Div Smith Chart S11 0.0 70 Frequency(MHz) 5.0 66 2.0 64 1.0 62 5.0 1900 60 0.2 Magnitude(dB) -46.8876 Part Number LBT70A74 Rev. Date 2011-05-13 Ver. 1.0 Fax: +86-23-62808382 Page www.sipatsaw.com / [email protected] 3/3