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| Data Sheet Features * * * * * * * * For WLAN applications Usable bandwidth of 17 MHz Low loss High attenuation No impedance matching required for operation at 250 Balanced operation Ceramic Surface Mount Package (SMP) Small size Part Number 855942 770 MHz SAW Filter * Package Surface Mount 5.00 x 5.00 x 1.32 mm Pin Configuration Bottom View 1 2 3 1.32 NOM. 1.52 MAX. 5.00 1.27 0.66 8 4 7 6 5 5.00 1.27 Pin No. 1,3 5,7 2,6 8,4 Description Balanced Input BalancedOutput External ground Case ground 2.08 0.64 Dimensions shown are nominal in millimeters All tolerances are 0.15mm except overall length and width +0.15/-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 11-Jul-2002 Page 1 of 5 Data Sheet Operating Temperature Range: (2) -10 to +70 oC Part Number 855942 770 MHz SAW Filter Electrical Specifications (1) Parameter (3) Center Frequency Minimum Insertion Loss Amplitude Variation 761.5 - 778.5 MHz Group Delay 761.5 - 778.5 MHz Group Delay Ripple 761.5 - 778.5 MHz Relative Attenuation (4) 740 MHz 750 MHz 790 MHz 800 MHz Minimum Rejection (4) 1 - 370 MHz 370 - 740 MHz 800 - 1400 MHz 1400 - 2000 MHz Source Impedance (5) Load Impedance (5) Notes: 1. 2. 3. 4. 5. Minimum 40 30 13 35 30 30 30 30 - Typical 770 3.0 1.876 50 23 47 45 31 51 46 46.5 43.5 37.75 250 250 Maximum 4 3.5 60 100 - Unit MHz dB dB p-p nsec nsec dB dB dB dB dB dB dB dB All specifications are based on the test circuit 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 Referenced to insertion loss at 770 MHz This is the optimum impedance in order to achieve the performance shown Subject to change or obsolescence without notice Rev A 11-Jul-2002 Page 2 of 5 Data Sheet Part Number 855942 770 MHz SAW Filter Typical Performance (at +25oC) Subject to change or obsolescence without notice Rev A 11-Jul-2002 Page 3 of 5 Data Sheet Actual matching values may vary due to PCB layout and parasitics 1 5 Part Number 855942 770 MHz SAW Filter Matching Schematics 250 Balanced 250 3 2,4,6,8 7 250 Marking 2.28 Sawtek logo Marking code PCB Footprint 5.20 1.47 3 JJJYM .84 .71 ID dot Date code .43 .84 1.47 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 12.8 O330 Sawtek logo 0.3 2.0 4.0 O1.5 A 1.75 5.5 5.25 1.8 Section A-A 5.25 8.0 O1.5 A ID dot O102 Direction of travel 12.0 O20.2 O13.0 2.0 Dimensions shown are nominal in millimeters Packaging quantity: 4000 units/reel Subject to change or obsolescence without notice Rev A 11-Jul-2002 Page 4 of 5 Data Sheet Maximum Ratings Parameter Operating Temperature Range Storage Temperature Range Part Number 855942 770 MHz SAW Filter Symbol T Tstg Minimum -10 -40 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 (1) Other Technical Information Notes: 1. Average ramp up rate 3 oC/sec max Temp maintained above 120 oC - 360 sec min o Temp maintained above 180 C - 150 sec min o Peak at 235 5 C - 30 sec min o Average ramp down rate -6 C/sec max 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 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 11-Jul-2002 Page 5 of 5 |
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