First Telecom IC Supplier to Offer Mask-Programmable Options

    FUJITSU OFFERING A MASK PROGRAMMABLE FAMILY OF SUPER PLL DEVICES, NEW MB15S IF BAND PLL SYNTHESIZER SERIES

    SAN JOSE, Calif., Jan. 15, 1996 -- In an innovative effort designed to serve the rapidly-growing worldwide telecommunications market, Fujitsu Microelectronics, Inc. (FMI) is providing a new Mask Programmable family of intermediate frequency (IF) band Phase Locked Loop frequency synthesizers, so users can select specific reference and comparison divide ratios appropriate to their product and application requirements.

    Applying a manufacturing methodology to telecommunications ICs that has been proven and successful in the microcontroller market, FMI's new MB15S Series provides both fully-customizable and standard IF band frequency synthesizers in extremely compact, durable packages that operate at up to 300 MHz using a low supply current of 3.5 milliamps, typically. All of the new Mask Programmable PLLs, manufactured using Fujitsu's BiCMOS technology, require supply voltages of between 2.7V and 3.5 V.

    No external microcontrollers are needed to program divide ratios, since two sets of reference divider and comparison divider values are fixed by mask programming. Selection of either set of divider values is made via an external select pin. Also, designers can choose either a low sensitivity charge pump for direct modulation applications, or a super charger circuit for digital applications.

    "Our custom Mask option methodology enables telecommunications product designers to take advantage of design flexibility and simplicity that has worked so well in the microcontroller market," said Dennis Burman, FMI's telecommunications marketing manager. "By designing the PLL's reference and comparison dividers by means of a Mask option, Fujitsu provides users with a full range of custom options, letting them easily select reference and comparison dividers according to their application's requirements." Burman added that Fujitsu is the first vendor to provide this flexible and low-cost methodology on a broad scale for a complete range of applications.

    MB15S02 Designed for GSM Systems

    The first standard products available under the new Mask Programmable IF series is FMI's MB15S02 IF Band PLL Frequency Synthesizer, which has been designed for Global Systems for Mobile Communications (GSM). The MB15S02 features a pulse swallow function, a prescalar with a divide ratio of 16/17, and rapid synchronization at power-up, which is enabled by Fujitsu's unique charge pump 'super charger circuitry.'

    Like all standard members of the series, the MB15S02 offers a specific PLL implementation using a specific reference frequency, and can be used at other operating frequencies simply by changing the reference frequency values.

    All members of the Mask Programmable IF PLL family, including the MB15S02, come in 8-pin plastic shrink small outline packages. Pricing for OEM versions of the MB15S02 begins at $1.25 in 100,000-piece units.

    Fujitsu Microelectronics, Inc. (FMI) design and markets a comprehensive portfolio of advanced semiconductor products. FMI provides customers with sophisticated design capabilities and access to one of the industry's largest, most experienced research and development teams, with worldwide manufacturing capabilities. Based in San Jose, Calif., FMI is a leading supplier of high-performance ASICs, memory devices, RISC embedded processors, multi-chip module and multi-chip package products, PCMCIA-compliant memory and I/O cards, SPARC processors for workstation applications, graphics chips and cards, telecommunications ICs, ATM ICs, plasma displays and LCD products, and Ethernet LAN devices. For product information, call 1-800-866-8608.

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    FOR FURTHER INFORMATION:

    Betsy Taub
    Fujitsu Microelectronics, Inc.
    (408) 922-9440

    Dick Davies
    Independent Public Relations
    (415) 777-4161


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