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| Preliminary Data Sheet Features * * * * * * * * For KPCS applications Usable bandwidth 30 MHz No impedance matching required Single-ended input Balanced output Superior amplitude and phase balance Ceramic Surface Mount Package (SMP) Small size Part Number 856155 1855 MHz SAW Filter * Package Surface Mount 2.50 x 2.00 x 0.76 mm Pin Configuration Bottom View 2 3 1 0.76 NOM. 0.84 MAX. 2.50 0.94 5 4 2.00 0.50 1.38 Pin No. 1 3,4 2,5 Description Input unbalanced Output balanced Case ground 0.50 0.94 Dimensions shown are nominal in millimeters All tolerances are 0.10mm Body: Al2O3 ceramic Lid: Kovar or Alloy 42, Au over Ni plated Terminations: Au plating 0.5 - 1.0m, over a 2 - 6m Ni plating Subject to change or obsolescence without notice Rev B 28-Jan-2003 Page 1 of 5 Preliminary Data Sheet Operating Temperature Range: (2) -30 to +85 oC Part Number 856155 1855 MHz SAW Filter Electrical Specifications (1) Parameter (3) Center Frequency Maximum Insertion Loss 1840 - 1870 MHz Absolute Attenuation 100 - 1025 MHz 1025 - 1750 MHz 1750 - 1780 MHz 1930 - 2220 MHz 2220 - 6000 MHz Output Amplitude Balance (|S31/S21|) 1840 - 1870 MHz Output Phase Balance [(S31)- (S21)+180] 1840 - 1870 MHz Input/Output VSWR 1840 - 1870 MHz Optimal Source Impedance (4) Optimal Load Impedance (balanced) (4) Notes: 1. 2. 3. 4. 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 This is the optimum impedance in order to achieve the performance shown Minimum 45 40 35 25 40 -1.5 -8 - Typical 1855 3 50 50 45 30 50 1.2 5 1.9 50 100 Maximum 3.5 1.5 8 2.5 - Unit MHz dB dB dB dB dB dB dB degree Test Circuit: 1 3 100 50 2,5 4 50 Single-ended Input 100 Balanced Output Subject to change or obsolescence without notice Rev B 28-Jan-2003 Page 2 of 5 Preliminary Data Sheet Part Number 856155 1855 MHz SAW Filter Typical Performance (at +25oC) Subject to change or obsolescence without notice Rev B 28-Jan-2003 Page 3 of 5 Preliminary Data Sheet Part Number 856155 1855 MHz SAW Filter Matching Schematics 1 3 100 50 2,5 4 50 Single-ended Input 100 Balanced Output Marking Sawtek logo Marking code PCB Footprint 2.59 T JJJYM ID dot Date code 2.08 .69 .71 SQ .23 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 8.8 2.7 O330 ID dot Sawtek logo 4.0 0.3 2.0 O1.5 A 1.75 2.75 O102 Direction of travel O20.2 O13.0 2.0 3.5 8.0 4.0 O1.0 1.1 Section A-A 2.23 A Dimensions shown are nominal in millimeters Packaging quantity: 10000 units/reel Subject to change or obsolescence without notice Rev B 28-Jan-2003 Page 4 of 5 Preliminary Data Sheet Maximum Ratings Parameter Operating Temperature Range Storage Temperature Range Part Number 856155 1855 MHz SAW Filter Symbol T Tstg Minimum -30 -40 Maximum +85 +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 B Or contact one of our worldwide Network of sales offices, Representatives or distributors 28-Jan-2003 Page 5 of 5 |
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