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| Preliminary Data Sheet Features * * * * * * * For broadband applications Typical 3 dB bandwidth of 5.7 MHz High attenuation Single-ended operation Ceramic Surface Mount Package (SMP) Small size Replaces Sawtek P/N 851553 (BW 3dB=5.5 MHz) Part Number 855745 70 MHz SAW Filter * Package Surface Mount 19.00 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 RF output RF input Ground Case 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 04-18-2002 Page 1 of 5 Preliminary Data Sheet Operating Temperature Range: (2) 0 to +70 oC Part Number 855745 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 67.65 - 72.35 MHz Phase Linearity 67.65 - 72.35 MHz Group Delay Variation 67.65 - 72.35 MHz Absolute Delay Relative Attenuation(4) 10 - 58 MHz 58 - 66 MHz 74 - 82 MHz 82 - 90 MHz 90 - 120 MHz 120 - 145 MHz 145 - 200 MHz Source Impedance: (5) Load Impedance: (5) Substrate Material Temperature Coefficient of Frequency Notes: 1. 2. 3. 4. 5. All specifications are based on the matching schematic shown on page 4 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 Minimum 72.35 72.73 66.08 42.0 37.0 41.0 44.5 51.0 47.5 59.0 - Typical 70 22.2 67.45 72.66 67.17 72.89 66.28 73.76 0.61 2.6 55.7 2.065 55 47 47 54 60 54 65 50 50 LiTaO3 -23 Maximum 24 67.65 67.27 73.92 1.1 5.0 110 - Unit MHz dB MHz MHz MHz MHz MHz MHz dB p-p deg p-p nsec sec dB dB dB dB dB dB dB ppm/oC Subject to change or obsolescence without notice Rev A 04-18-2002 Page 2 of 5 Preliminary Data Sheet Part Number 855745 70 MHz SAW Filter Typical Performance (at +25oC) Subject to change or obsolescence without notice Rev A 04-18-2002 Page 3 of 5 Preliminary Data Sheet Matching Schematic Actual matching values may vary due to PCB layout and parasitics 180nH Part Number 855745 70 MHz SAW Filter 10pF 560nH 10 5 50 50 Single-ended 50 15pF 1,2,3,4 6,7,8,9 Marking PCB Footprint 8.84 SAWTEK 855745 XXXXXX ID Dot Date Code 6.70 2.00 1.22 .69 The date code consists of: day of the current year (Julian, 3 digits), last digit of the year (1 digit) and hour (2 digits) 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 04-18-2002 Page 4 of 5 Preliminary Data Sheet Maximum Ratings Parameter Operating Temperature Range Storage Temperature Range Part Number 855745 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 Sawtek's liability is limited only to the Surface Acoustic Wave (SAW) component(s) described in this data sheet. Sawtek does not accept any liability for applications, processes, circuits or assemblies which are implemented using any Sawtek component described in this data sheet. Contact Information Phone: +1 (407) 886-8860 Fax: +1 (407) 886-7061 Email: custservice@sawtek.com Web: www.sawtek.com PO Box 609501 Orlando, FL 32860-9501 USA Subject to change or obsolescence without notice Or contact one of our worldwide network of sales offices, representatives or distributors Rev A 04-18-2002 Page 5 of 5 |
Price & Availability of 855745
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