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| Data Sheet Features * * * * * * * For GSM IF applications Usable bandwidth of 160 kHz Low loss High attenuation Balanced operation Ceramic Surface Mount Package (SMP) Small size Part Number 855844 225 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 2 5 6 3,4,7,8 Description Input Input return Output Output return 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 01-Nov-2001 Page 1 of 5 Data Sheet Operating Temperature Range: (2) -20 to +70 oC Part Number 855844 225 MHz SAW Filter Electrical Specifications (1) Parameter (3) Center Frequency, fo Insertion Loss at 225 MHz Excluding losses due to matching Including losses in matching test circuit shown below Minimum 35 26 5 5 26 35 42 42 - Typical 225 2.3 3.5 0.5 0.3 45 32 11 13 30 39 45 45 0.9 0.6 0.2 704||332nH 739||359nH Maximum 3.8 5.0 3.2 2.2 1.8 1.6 1.3 - Unit MHz dB dB dB p-p dB p-p MHz MHz MHz MHz MHz MHz dB dB sec sec sec Amplitude Variation 224.9200 - 225.0800 MHz 224.9325 - 225.0675 MHz Rejection (4) 223 - 224.4 MHz 224.4 - 224.6 MHz 224.6 - 224.8 MHz 225.2 - 225.4 MHz 225.4 - 225.6 MHz 225.6 - 227.0 MHz Out of Band Rejection 10 - 215 MHz 235 - 750 MHz Group Delay Ripple 224.9200 - 225.0800 MHz 224.9325 - 225.0675 MHz 224.9500 - 225.0500 MHz Optimal Source Impedance: (5) Optimal Load Impedance: (5) Notes: 1. 2. 3. 4. 5. 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 manufacturing tolerances Relative to insertion loss at 225 MHz This is the complex conjugate of the unmatched filter's impedance resulting in maximum power transfer Test Circuit: 7pF 2 5 82nH 1 7pF 3,4,7,8 6 7pF 50 7pF 50 Balanced 50 82nH Subject to change or obsolescence without notice Rev A 01-Nov-2001 Page 2 of 5 Data Sheet Part Number 855844 225 MHz SAW Filter Typical Performance (at +25oC) Subject to change or obsolescence without notice Rev A 01-Nov-2001 Page 3 of 5 Data Sheet Actual matching values may vary due to PCB layout and parasitics 7pF 2 5 82nH 1 7pF 3,4,7,8 6 Part Number 855844 225 MHz SAW Filter Matching Schematics 7pF 50 Balanced 50 82nH 50 7pF Marking 2.28 Sawtek logo Marking code PCB Footprint 5.20 1.47 C 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 01-Nov-2001 Page 4 of 5 Data Sheet Maximum Ratings Parameter Operating Temperature Range Storage Temperature Range Part Number 855844 225 MHz SAW Filter Symbol T Tstg Minimum -20 -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 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-Nov-2001 Page 5 of 5 |
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