preliminary data sheet part number 856308 1575.42 mhz saw filter subject to change or obsolescence without notice rev - 16 - dec - 2002 page 1 of 5 features for gps applications usable bandwidth 2 mhz very low loss single - ended operation at 50 w no impedance matching required for operation at 50 w single - ended operation chip scale package (csp) ceramic surface mount package hermetic package p in configuration surface mount 2.00 x 1.50 x 0.76 mm bottom view 3 4 2 1 pin no. description 1 input 3 output 2,4 case ground 0.76 nom. 0.84 max. 1.30 1.50 0.42 0.56 0.25x45 chamfer 1.80 2.00 dimensions shown are nominal in millimeters all tolerances are 0.10mm body: al 2 o 3 ce ramic lid: kovar or alloy 42 , au over ni plated terminations: au plating 0.5 - 1.0 m m, over a 2 - 6 m m ni plating
preliminary data sheet part number 856308 1575.42 mhz saw filter subject to change or obsolescence without notice rev - 16 - dec - 2002 page 2 of 5 electrical specifications (1) operating temperature range: (2) - 40 to +85 o c parameter (3) minimum typical maximum unit center frequency - 1575.42 - mhz insertion loss 1574.42 - 1576.42 mhz - 1.0 1.4 db a bsolute attenuation 0 - 1475 mhz 1475 - 1522.42 mhz 1628.42 - 1750 mhz 1750 - 1800 mhz 1800 - 1990 mhz 1990 - 3000 mhz 3000 - 4000 mhz 4000 - 6000 mhz 30 30 30 32 32 30 20 17 36 33 37 36 38 40 25 22 - - - - - - - - db db db db db db db db pass band variation 1574.42 - 1576.42 mhz - 0.25 0.5 db p - p input/output return loss 1574.42 - 1576.42 mhz 10 18 - db source impedance (4) - 50 - w load impedance (4) - 50 - w notes : 1. all specifications are based on the test circuit shown below 2. in production, devices will be tested at room temperature to a guardbanded specification to ensure electrical compliance over temperature 3. electrical marg in has been built into the design to account for the variations due to temperature drift and manufacturing tolerances 4. this is the optimum impedance in order to achieve the performance shown test circuit: 50 w single - ended 2,4 1 3 50 50 w w no impedance matching re quired
preliminary data sheet part number 856308 1575.42 mhz saw filter subject to change or obsolescence without notice rev - 16 - dec - 2002 page 3 of 5 typical performance (at +25 o c)
preliminary data sheet part number 856308 1575.42 mhz saw filter subject to change or obsolescence without notice rev - 16 - dec - 2002 page 4 of 5 matching schematics 50 w single - ended 2,4 1 3 50 50 w w no impedance matching required marking pcb footprint m a r k i n g c o d e m f g s i t e x m x x y i d d o t d a t e c o d e 0.31x45 chamfer 0.76 2.00 0.62 1.50 the date code consists of: jjj = julian day, y = last digit of year, m = manufa cturing site code this footprint represents a recommendation only dimensions shown are nominal in millimeters tape and reel 1.83 section a-a 0.3 1.09 2.34 ? 1.5 ? 1.0 4.0 4.0 2.0 a a 8.0 3.5 1.75 8.8 id dot 2.0 direction of travel ? 330 ? 20.2 ? 13.0 ?102 2.7 dimensions shown are nominal in millimeters packaging quantity: 10000 units/reel
preliminary data sheet part number 856308 1575.42 mhz saw filter subject to change or obsolescence without notice rev - 16 - dec - 2002 page 5 of 5 maximum ratings parameter symbol minimum maximum unit operating temperature range t - 30 +85 o c storage temperature range t stg - 40 +85 o c warnings electrostatic sensitive device (esd) avoid ultrasonic exposure links to additional technical information pcb layout tips qualification flowchart soldering profile s - parameters 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 an y 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 phone: +1 (407) 886 - 8860 fax: +1 (407) 886 - 7061 email: custservice@sawtek.com web: www.sawtek.com or contact one of our worldwide network of sales offices, representatives or distributors
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