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| Data Sheet Features * * * * * * * For broadband applications Typical 3dB bandwidth of 3.1 MHz High attenuation Single-ended operation Ceramic Surface Mount Package (SMP) Small size Replaces Sawtek P/N 851548 (BW 3dB=3 MHz) Part Number 855741 70 MHz SAW Filter * Package Surface Mount 19 x 6.50 x 1.75 mm Pin Configuration Bottom View 1 2 3 4 5 1.75 NOM. 1.96 MAX. 0.76 10 9 8 7 6 19.0 1.80 1.91 R0.51 6.50 2.31 1.02 Pin No. 5 10 1,6 2,3,4,7,8,9 Description Output Input Ground Case ground Dimensions shown are nominal in millimeters All tolerances are 0.15mm except overall length and width +0.15mm/-0.10mm Body: Al2O3 ceramic Lid: Kovar, Ni plated Terminations: Au plating 0.5 - 1.0m, over a 2 - 6m Ni plating Subject to change or obsolescence without notice Rev A 01-Feb-2002 Page 1 of 5 Data Sheet Operating Temperature Range: (2) 0 to +70 oC Part Number 855741 70 MHz SAW Filter Electrical Specifications (1) Parameter (3) Center Frequency Minimum Insertion Loss Lower 1 dB Bandedge(4) Upper 1 dB Bandedge Lower 3 dB Bandedge(4) Upper 3 dB Bandedge Lower 40 dB Bandedge(4) Upper 40 dB Bandedge Amplitude Variation 68.72 - 71.28 MHz Phase Linearity 68.72 - 71.28 MHz Group Delay Variation 68.72 - 71.28 MHz Absolute Delay Relative Attenuation(4) 10 - 30 MHz 30 - 65 MHz 75 - 125 MHz 125 - 140 MHz 140 - 200 MHz Source Impedance: (5) Load Impedance: (5) Substrate Material Temperature Coefficient of Frequency Notes: 1. 2. 3. 4. 5. Minimum 71.28 71.48 67.77 50 47 47 41 50 - Typical 70 23 68.61 71.45 68.45 71.59 67.86 72.14 0.4 3.2 72 2.03 61 56 57 46 60 50 50 LiTaO3 -23 Maximum 25 68.72 68.52 72.23 1 6 150 - Unit MHz dB MHz MHz MHz MHz MHz MHz dB p-p deg p-p nsec sec dB dB dB dB dB ppm/oC - All specifications are based on the test circuit shown below In production, devices will be tested at room temperature to a guardbanded specification to ensure electrical compliance over temperature Electrical margin has been built into the design to account for the variations due to temperature drift and manufacturing tolerances All attenuation measurements are measured relative to minimum insertion loss This is the optimum impedance in order to achieve the performance shown Test Circuit: Actual matching values may vary due to PCB layout and parasitics 12pF 470nH 10 5 50 50 Single-ended 50 56pF 150nH 1,2,3,4 6,7,8,9 Subject to change or obsolescence without notice Rev A 01-Feb-2002 Page 2 of 5 Data Sheet Part Number 855741 70 MHz SAW Filter Typical Performance (at +25oC) Subject to change or obsolescence without notice Rev A 01-Feb-2002 Page 3 of 5 Data Sheet Actual matching values may vary due to PCB layout and parasitics Part Number 855741 70 MHz SAW Filter Matching Schematics 12pF 470nH 10 5 50 50 Single-ended 50 56pF 150nH 1,2,3,4 6,7,8,9 Marking PCB Footprint 8.84 SAWTEK 855741 XXXXXX ID Dot Date Code 6.70 2.00 1.22 .69 The date code consists of: JJJ = Julian day, Y = last digit of year, M = manufacturing site code This footprint represents a recommendation only Dimensions shown are nominal in millimeters Tape and Reel 2.7 32.8 O330 ID dot 0.3 2.0 4.0 O1.5 R0.75 A 1.75 14.2 19.6 32.0 28.4 O102 O20.2 O13.0 2.0 0.20 Direction of travel 2.3 Section A-A 7.1 12.0 O1.5 A Dimensions shown are nominal in millimeters Packaging quantity: 2000 units/reel Subject to change or obsolescence without notice Rev A 01-Feb-2002 Page 4 of 5 Data Sheet Maximum Ratings Parameter Operating Temperature Range Storage Temperature Range Part Number 855741 70 MHz SAW Filter Symbol T Tstg Minimum 0 -40 Typical +25 - Maximum +70 +85 Unit o o C C Warnings * * Electrostatic Sensitive Device (ESD) Avoid ultrasonic exposure Links to Additional Technical Information PCB Layout Tips S-Parameters Qualification Flowchart Soldering Profile Other Technical Information Contact Information PO Box 609501 Orlando, FL 32860-9501 USA Subject to change or obsolescence without notice Phone: +1 (407) 886-8860 Fax: +1 (407) 886-7061 Email: custservice@sawtek.com Web: www.sawtek.com Rev A Or contact one of our worldwide Network of sales offices, Representatives or distributors 01-Feb-2002 Page 5 of 5 |
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