49 xx s eries rf t uner m odules c able m odem and d igital a pplications product brief m i c r o t u n e? the 49XX series rf tuner modules are specifically designed for subscriber-side cable modem applications. downstream signal frequencies range from 50 mhz to 860 mhz (us) and 70 mhz to 862 mhz (eu). upstream signal frequencies range from 5 mhz to 42 mhz (us) and 5 mhz to 65 mhz (eu). the receivers use a three-band single-conversion approach, with a 43.75 mhz (us) or 36.125 mhz (eu) output frequency. a second conversion to 5.75 mhz (us) or 7.125 mhz (eu) is available for qam demodulators requiring a lower if center frequency. downstream band selection and tuning is done via i 2 c bus while a separate, three-wire bus and transmit enable control the upstream amplifier. two gain-control inputs (rf+if) are available to adjust the output signal level. the tuner if output is designed to drive a low-pass image-reject filter prior to the qam demodulator ic. a dc/dc converter for 33v generation is built in, so that only a single supply voltage of 5v is required. the common antenna input/output is realized by an f- connector (75 ? ) per [ips-sp- 406]. applications ? cable modems (cm) ? cable telephony ? digital cable systems features ? input frequency ranges: 50 mhz to 860 mhz (us) 70 mhz to 862 mhz (eu) ? docsis, eurodocsis, and dvb compliant ? contains an if saw filter, if amplifier, and optional second downconversion to near baseband if ? contains a diplex filter and digitally-programmable-gain amplifier in the upstream path ? downstream tuner functions controlled by i 2 c bus ? single 5v supply ? antenna input: f-connector ? horizontal mounting ? dimensions (l x h x d): 66 x 39 x 14 mm modules can be implemented with different sockets, filters, interfaces, connectors, and other customizable options within the same pinouts .
49 xx s eries rf t uner m odules c able m odem and d igital a pplications p roduct b rief pb-00018 rev 1.3 ? december 2000 page 2 of 2 functional characteristics p arameter e uro docsis docsis u nit downstream frequency range 70 to 862 50 to 860 mhz tuning resolution 62.5/50.0/ 31.25 62.5/50.0/ 31.25 khz if center frequency 36.125 43.75 or 44 mhz output frequency model 3x8620 36.125 mhz model 3x8173 7.125 mhz model 3x7901 43.75 mhz model 3x7702 5.75 mhz upstream frequency range 5 to 65 5 to 42 mhz input impedance (vhf/uhf common) 75 75 ? rf agc voltage for maximum gain +4 +4 v if agc voltage for maximum gain +4 +4 v supply voltage +5 +5 v supply current requirements: vs1 (pin 3) 150 150 ma vs2 and vs3 (pins 6 and 10) 200 200 ma vs4 (pin 15) 100 100 ma operating temperature 0 to +60 0 to +60 c storage temperature -30 to +70 -30 to +70 c tuner module data (eurodocsis) p arameter m in t yp m ax u nit downstream data input signal level 40 80 db v voltage gain 68 80 db noise figure 8 10 db rf tilt 2 3 db image rejection: 80-160 mhz 60 70 db 152-467 mhz 55 65 db 459-866 mhz 50 60 db phase noise at 10 khz: 80-160 mhz -95 -80 dbc/hz 152-467 mhz -85 -80 dbc/hz 459-866 mhz -85 -80 dbc/hz intermodulation: composite triple beat -50 dbc composite second order beat -50 dbc upstream data output level: maximum 58 60 dbmv minimum 6 8 dbmv gain steps 0.7 1 1.3 db gain range 52 db harmonic distortion: 5 mhz to 65 mhz (2 nd level) -53 dbc 5 mhz to 65 mhz (3 rd level) -54 dbc 88 mhz to 96 mhz -43 dbmv 96 mhz to 180 mhz -40 dbmv 180 mhz to 862 mhz -40 dbmv 49XX series rf tuner module typical layout tuner module data (docsis) p arameter m in t yp m ax u nit downstream data input signal level 40 80 db v voltage gain 60 80 db noise figure: 8 10 db rf tilt 2.5 db image rejection: 55-162 mhz 60 70 db 156-469 mhz 55 65 db 463-860 mhz 55 60 db phase noise at 10 khz: 55-162 mhz -95 -80 dbc/hz 156-469 mhz -85 -80 dbc/hz 463-860 mhz -85 -80 dbc/hz intermodulation: composite triple beat -50 dbc composite second order beat -50 dbc upstream data output level: maximum 58 60 dbmv minimum 6 8 dbmv gain steps 0.7 1 1.3 db gain range 52 db harmonic distortion: 5 mhz to 42 mhz (2 nd level) -53 dbc 5 mhz to 42 mhz (3 rd level) -54 dbc 54 mhz to 60 mhz -40 -35 dbmv 60 mhz to 88 mhz -50 -40 dbmv 88 mhz to 860 mhz -50 -45 dbmv world headquarters ? microtune, inc., 2201 tenth street, plano, tx 75074 ? tel: 972-673-1600, fax: 972-673-1602, e-mail: sales@microtune.com, web site: www.microtune.com european headquarters ? microtune gmbh and co. kg, marie curie strasse 1, 85055 ingolstadt / germany ? tel: +49-841-9378-011, fax: +49-841- 9378-010, sales tel: +49-841-9378-020, sales fax: +49-841-9378-024 pan-asian headquarters ? microtune, inc. - hong kong, silvercord tower 1, room 503, 30 canton road, kowloon, hong kong ? tel: +852-2378-8128, fax: +852-2302-0756 for a detailed list of current sales representatives, visit our web site at www.microtune.com. the information in this document is believed to be accurate and reliable. microtune assumes no responsibility for any consequen ces arising from the use of this information, nor from any infringement of patents or the rights of third parties which may result from its use. no license is granted by implication or otherwise under any paten t or other rights of microtune. the information in this publication replaces and supersedes all information previously supplied, and is subject to change without notice. the customer is responsible for assuri ng that proper design and operating safeguards are observed to minimize inherent and procedural hazards. microtune assumes no responsibility for applications assistance or customer product design. the devices described in this document are not authorized for use in medical, life-support equipment, or any other application involving a potential risk of severe property or environmental damage, personal injury, or death without prior express written approval of microtune. any such use is understood to be entirely at the user?s r isk. microtune, microtuner, micromodule, and the microtune logo are trademarks of microtune, inc. all other trademarks belong to the ir respective companies. this product is manufactured and protected by the following u.s. patents: 5,805,988; 5,739,730; 5,625,325; 5,737,035; 5,648,744 ; 5,717,730; 5,847,612; 6,104,242; 6,100,761; 6,144,402; and additional patents pending or filed. entire contents copyright ? 2000 microtune, inc.
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