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| Preliminary Data Sheet Features * * * * * For WLAN applications Usable bandwidth of 17 MHz Balanced or single-ended operation Ceramic Surface Mount Package (SMP) Small size Part Number 856278 374 MHz SAW Filter * Package Surface Mount 3.80 x 3.80 x 1.27 mm Pin Configuration Bottom View 1 2 3 0.61 1.27 NOM. 1.45 MAX. 3.80 1.27 7 6 5 8 4 3.80 0.60 1.00 Pin No. 2 3 6 7 1,4,5,8 Description Input Input return Output Output return Case ground 1.50 Dimensions shown are nominal in millimeters All tolerances are 0.15mm except overall length and width 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 15-Aug-2003 Page 1 of 5 Preliminary Data Sheet Operating Temperature Range: (2) -10 to +80 oC Part Number 856278 374 MHz SAW Filter Electrical Specifications (1) Parameter (3) Center Frequency, f0 Maximum Insertion Loss 367 - 381 MHz Lower 3 dB Bandedge Upper 3 dB Bandedge Stop Band Rejection (4) 274 - 331 MHz 331 - 352 MHz 352 - 357.5 MHz 390.5 - 396 MHz 396 - 404 MHz 404 - 417 MHz 417 - 474 MHz Amplitude Variation (5) 367 - 381 MHz Group Delay Variation (5) 367 - 381 MHz Triple Transit Suppression Source Impedance (6) Load Impedance (6) Notes: 1. 2. 3. 4. 5. 6. 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 measured over the defined frequency range and referenced to minimum insertion loss Total variation over the defined range This is the optimum impedance in order to achieve the performance shown Minimum 382.5 45 40 30 30 35 40 40 30 - Typical 374 9 363.5 384.5 50 45 35 35 41 45 45 0.75 40 40 200 200 Maximum 10 365.5 1.0 100 - Unit MHz dB MHz MHz dB dB dB dB dB dB dB dB nsec dB Test Circuit: Actual matching values may vary due to PCB layout and parasitics 18pF 2 6 15nH 3 18pF 1,4,5,8 7 22pf 200 22pf 200 Balanced 200 27nH Subject to change or obsolescence without notice Rev A 15-Aug-2003 Page 2 of 5 Preliminary Data Sheet Part Number 856278 374 MHz SAW Filter Typical Performance (at +25oC) Subject to change or obsolescence without notice Rev A 15-Aug-2003 Page 3 of 5 Preliminary Data Sheet Actual matching values may vary due to PCB layout and parasitics 18nH 2 6 10nH Part Number 856278 374 MHz SAW Filter Matching Schematics 50 Single-ended 50 6pf 1,3,4,5,7,8 18pf 50 9pF 2 6 12pf 750 Balanced 750 36nH 3 9pF 1,4,5,8 7 12pf 24nH 750 Marking Marking code PCB Footprint 1.70 4.01 1.19 Sawtek logo .81 .41 P JJJYM ID dot Date code .46 .81 1.19 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 ID dot 0.3 2.0 4.0 O1.5 A 1.75 5.5 4.1 1.8 Section A-A 4.1 8.0 O1.5 A Sawtek logo O102 O20.2 O13.0 12.0 2.0 Direction of travel Dimensions shown are nominal in millimeters Packaging quantity: 4000 units/reel Subject to change or obsolescence without notice Rev A 15-Aug-2003 Page 4 of 5 Preliminary Data Sheet Maximum Ratings Parameter Operating Temperature Range Storage Temperature Range Input Power Part Number 856278 374 MHz SAW Filter Symbol T Tstg Pin Minimum -10 -40 - Maximum +85 +85 +10 Unit C C dBm o o 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 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 15-Aug-2003 Page 5 of 5 |
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