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| THIS DOCUMENT IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS SP8704 IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS DS 3289 -1 SP8704 950MHz VERY LOW CURRENT MULTI-MODULUS DIVIDER The SP8704 is a switchable divide by 128/129, 64/65 programmable divider with a maximum specified operating frequency of 950MHz. The signal (clock) inputs are biased internally and require to be capacitor coupled. The SP8704 will operate from any supply from 3V to 5V and features full electrostatic discharge protection. FEATURES DC to 950MHz Operation -40C to +85C Temperature Range Operation from 3V to 5V Supply ESD Protection on all Pins Fig. 1 Pin connections - top view DP8,MP8 QUICK REFERENCE DATA Supply Voltage 3V to 5V Supply Current 10mA - Including Output Emitter Follower ABSOLUTE MAXIMUM RATINGS Supply voltage Storage temperature range Junction temperature Input voltage 7V -55C to +125C +175C 2.5V p-p / 128/9 / 64/5 Fig. 2 Functional diagram SP8704 SP8704 ELECTRICAL CHARACTERISTICS Test conditions (unless otherwise stated): Tamb = -40C to 85C, VCC = +2.75V to +5.5V Value Characteristic Min. Supply current Input sensitivity 10MHz 80MHz 150MHz 850MHz 950MHz Input impedance Output Ratio select (pin 3) Modulus control (pin 6) Clock to output delay Set up time Release time LO HI LO HI 2 8 16 16 VCC 1 50 2 1 1 Typ. 10 150 25 15 15 50 pF V pk-pk V V V V ns ns ns Emitter follower output current source = 0.75mA 128/129 selected 64/65 selected 65 or 129 selected 64 or 128 selected Max. mA mV rms Including output emitter follower Sinewave input into 50 Units Conditions TRUTH TABLE Division Pin 3 L L H H Pin 6 L H L H ratio 129 128 65 64 Fig. 3 Typical input sensitivity at 85C SP8704 SP8704 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. (c) GEC Plessey Semiconductors 1992 Publication No. DS3289 Issue No. 1.0 May 1992 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 regarding 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, which are available on request. |
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