855272

Data Sheet Features • • • • • For wireless applications Usable bandwidth of 20 MHz High attenuation Single-ended operation at 50Ω Ceramic Surface Mount Package (SMP) Part Number 855272 479.75 MHz SAW Filter • Package Surface Mount 7.01 x 5.51 x 1.63 mm Pin Configuration Bottom View 1 2 3 12 0.76 1.63 NOM. 1.78 MAX. 4 5 6 11 10 7.01 1.27 9 8 7 1.70 5.51 1.27 0.79 1.14 Pin No. 3 9 8,2 1,4,5,6,7 10,11,12 Description Output Input NC Case Ground Case Ground Dimensions shown are nominal in millimeters All tolerances are ±0.15mm except overall length and width ±0.13mm Body: Al2O3 ceramic Lid: Kovar, Ni plated Terminations: Au plating 0.5 - 1.0µm, over a 2 - 6µm Ni plating Subject to change or obsolescence without notice Rev - 07-Apr-2003 Page 1 of 5 Data Sheet Operating Temperature: (2) +25 oC Part Number 855272 479.75 MHz SAW Filter Electrical Specifications (1) Parameter (3) Center Frequency Insertion Loss 1 dB Bandwidth 3 dB Bandwidth 30 dB Bandwidth 35 dB Bandwidth Passband Variation Group Delay Variation Source Impedance (4) Load Impedance (4) Temperature Coefficient of Frequency Notes: 1. 2. 3. 4. Minimum 479.25 23 - Typical 479.75 9.8 23.3 25.5 33 33.9 0.75 25 50 50 -90 Maximum 480.25 13 36 1.5 50 - Unit MHz dB MHz MHz MHz MHz dB p-p nsec Ω Ω ppm/oC All specifications are based on the test circuit shown below This specification is valid for room temperature only Electrical margin has been built into the design to account for the variations due to manufacturing tolerances 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 4pF 3nH 9 3 3nH 50 Ω Single-ended 50Ω 8pF 1,2,4,5,6 7,8,10,11,12 3pF 50Ω Subject to change or obsolescence without notice Rev - 07-Apr-2003 Page 2 of 5 Data Sheet Part Number 855272 479.75 MHz SAW Filter Typical Performance (at +25oC) Subject to change or obsolescence without notice Rev - 07-Apr-2003 Page 3 of 5 Data Sheet Actual matching values may vary due to PCB layout and parasitics 4pF 3nH 9 3 Part Number 855272 479.75 MHz SAW Filter Matching Schematics 3nH 50 Ω Single-ended 50Ω 8pF 1,2,4,5,6 7,8,10,11,12 3pF 50Ω Marking 1.34 PCB Footprint .99 .28 1.34 .28 Date code ID dot SAWTEK 855272 XXXXXX 5.71 .99 7.21 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 16.8 Ø330 ID dot 0.3 2.0 4.0 Ø1.5 A 1.75 7.5 7.3 16.0 Ø102 Direction of travel Ø20.2 Ø13.0 2.0 2.2 Section A-A 5.8 8.0 Ø1.5 A Dimensions shown are nominal in millimeters Packaging quantity: 3000 units/reel Subject to change or obsolescence without notice Rev - 07-Apr-2003 Page 4 of 5 Data Sheet Parameter Operating Temperature Range Storage Temperature Range Part Number 855272 479.75 MHz SAW Filter Maximum Ratings Symbol T Tstg Minimum -40 Typical +25 +25 Maximum +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 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 - Or contact one of our worldwide network of sales offices, representatives or distributors 07-Apr-2003 Page 5 of 5