obsolescence notice this product is obsolete. this information is available for your convenience only. for more information on zarlink?s obsolete products and replacement product lists, please visit http://products.zarlink.com/obsolete_products/
this document is for maintenance purposes only and is not recommended for new designs
the SP4982 prescaler is one a range of very high speed low power prescalers for use in consumer applications such as satellite tv receivers. the device features a cmos compatible output stage. features n high speed operation 25ghz n silicon technology for low phase noise n very low power dissipation 220mw n single 5v supply operation n high input sensitivity n very wide operating frequency range n electrostatic protection ? ? esd precautions must be observed ds2276-2.2 SP4982 25ghz 4 4 8192 prescaler fig. 2 SP4982 block diagram 400 output v cc 400 v ref (2v) input input 2 3 3ma output output gnd 7 6 5 4 8192 15k gnd 1 43k 1k 1k 4 v cc absolute maximum ratings supply voltage, v cc input voltage storage temperature junction temperature 1 65v 25v p-p 2 55 c to 1 150 c 1 175 c dp8 mp8 gnd input input v cc nc output output v cc output gnd 1 2 3 4 8 7 6 5 1 2 3 4 8 7 6 5 gnd input input v cc SP4982 SP4982 nc output output v cc output gnd fig 1. pin connections - top view ordering information SP4982 na dp SP4982 na mp
2 SP4982 electrical characteristics these characteristics are guaranteed over the following conditions (unless otherwise stated): t amb = 2 10 c to 1 85 c, v cc = 1 475v to 1 525v (test circuit see fig. 4) characteristic supply current, i cc input sensitivity 500mhz to 1800mhz 2500mhz input impedance (series equivalent) output voltage high, f in = 2500mhz output voltage low, f in = 2500mhz conditions value typ. max. min. units 65 50 100 05 ma mv mv w pf v p-p v p-p 4 2,3 2,3 7 7 v cc 2 075 44 50 pin v cc = 1 5v rms sinewave, measured in 50 w system, see figs 3 and 4. see fig. 5 v cc = 1 5v, load as fig. 4 v cc = 1 5v, load as fig. 4 fig. 3 typical input sensitivity 400 150 100 50 1000 2000 3000 frequency (mhz) v in (mv rms into 50 w ) operating window fig. 4 test circuit 1 2 3 4 8 7 6 5 1n 1 5v 1n 180 hybrid coupler 01 m output 8p 50 a 50 w signal generator b c d 50 w sampling scope SP4982
3 SP4982 fig. 5 typical input impedance (frequencies in mhz) j 2 j 1 j 0.5 j 0.2 0 2 j 0.2 2 j 0.5 2 j 1 2 j 2 1 0.5 0.2 j 5 2 j 5 2 5 1000 500 s 11 z o = 50 w 2500 2000 1500
4 SP4982 headquarters operations gec plessey semiconductors cheney manor, swindon, wiltshire sn2 2qw, united kingdom. tel: (0793) 518000 fax: (0793) 518411 gec plessey semiconductors p.o. box 660017 1500 green hills road, scotts valley, california 95067-0017, united states of america. tel: (408) 438 2900 fax: (408) 438 5576 customer service centres france & benelux les ulis cedex tel: (1) 64 46 23 45 tx: 602858f fax : (1) 64 46 06 07 germany munich tel: (089) 3609 06-0 tx: 523980 fax : (089) 3609 06-55 italy milan tel: (02) 66040867 fax: (02) 66040993 japan tokyo tel: (03) 3296-0281 fax: (03) 3296-0228 north america integrated circuits and microwave products scotts valley, usa tel (408) 438 2900 fax: (408) 438 7023. hybrid products, farmingdale, usa tel (516) 293 8686 fax: (516) 293 0061. south east asia singapore tel: (65) 3827708 fax: (65) 3828872 sweden stockholm, tel: 46 8 702 97 70 fax: 46 8 640 47 36 united kingdom & scandinavia swindon tel: (0793) 518510 tx: 444410 fax : (0793) 518582 these are supported by agents and distributors in major countries world-wide. gec plessey semiconductors 1996 publication no. ds2276 issue no. 2.2 may 1996 this publication is issued to provide information only which (unless agreed by the company in writing) may not be used, applied or reproduced for any purpose nor form part of any order or contract nor to be regarded as a representation relating to the products or services concerned. no warranty or guarantee express or implied is made regard ing the capability, performance or suitability of any product or service. the company reserves the right to alter without prior knowledge the specification, design or price of any product or service. information concerning possible methods of use is provided as a guide only and does not constitute any guarantee that such methods of use will be satisfactory in a specific piece of equipment. it is the user's responsibility to fully determine the performance and suitability of any equipment using such information and to ensure that any publication or data used is up to date and has not been superseded. these products are not suitable for use in any medical products whose failure to perform may result in significant injury or death to the user. all products and materials are sold and services provided subject to the company's conditions of sale, w hich are available on request.
www.zarlink.com information relating to products and services furnished herein by zarlink semiconductor inc. or its subsidiaries (collectively ?zarlink?) is believed to be reliable. however, zarlink assumes no liability for errors that may appear in this publication, or for liability otherwise arising from t he application or use of any such information, product or service or for any infringement of patents or other intellectual property rights owned by third parties which may result from such application or use. neither the supply of such information or purchase of product or service conveys any license, either express or implied, u nder patents or other intellectual property rights owned by zarlink or licensed from third parties by zarlink, whatsoever. purchasers of products are also hereby notified that the use of product in certain ways or in combination with zarlink, or non-zarlink furnished goods or services may infringe patents or other intellect ual property rights owned by zarlink. this publication is issued to provide information only and (unless agreed by zarlink in writing) may not be used, applied or re produced for any purpose nor form part of any order or contract nor to be regarded as a representation relating to the products or services concerned. the products, t heir specifications, services and other information appearing in this publication are subject to change by zarlink without notice. no warranty or guarantee express or implied is made regarding the capability, performance or suitability of any product or service. information concerning possible methods of use is provided as a guide only and does not constitute any guarantee that such methods of use will be satisfactory in a specific piece of equipment. it is the user?s responsibility t o fully determine the performance and suitability of any equipment using such information and to ensure that any publication or data used is up to date and has not b een superseded. manufacturing does not necessarily include testing of all functions or parameters. these products are not suitable for use in any medical products whose failure to perform may result in significant injury or death to the user. all products and materials are sold and services provided subject to zarlink?s conditi ons of sale which are available on request. purchase of zarlink?s i 2 c components conveys a licence under the philips i 2 c patent rights to use these components in and i 2 c system, provided that the system conforms to the i 2 c standard specification as defined by philips. zarlink, zl and the zarlink semiconductor logo are trademarks of zarlink semiconductor inc. copyright zarlink semiconductor inc. all rights reserved. technical documentation - not for resale for more information about all zarlink products visit our web site at
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