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May 22nd 2001. Fujitsu Microelectronics’ MB86628 KeyWave II Quad Analogue Front End (AFE) for ADSL modems is the ideal solution for high density, power sensitive Central Office (CO) equipment. Already designed into Quad and Octal ADSL modems and supporting various DSL modes, the Fujitsu Quad AFE offers flexibility in design for CO applications.

Demand for increased subscriber capacity from a CO DSL Access Multiplexer (DSLAM) is driving the requirement for more DSL ports per line card. Board area and power consumption per port is therefore at a premium.

The KeyWaveTM II Quad AFE has four complete ADSL AFE channels integrated into a single, compact EFBGA package. Two Quad AFEs interfaced with an octal DSL transceiver can realise a board area of < 1.5 square inches per port (including line drivers and protection circuitry).

Power consumption is dominated by the transmit line driver in each ADSL port. The Fujitsu Quad AFE contributes only 235 mW per channel to the overall power budget when running full-rate ADSL.

The KeyWaveTM II Quad AFE has the highest resolution analogue to digital (ADC) and digital to analogue converters (DAC) in the industry. In each AFE channel, 15-bit ADCs and DACs with high linearity ensure accurate conversion of the ADSL DMT signal, and allow for maximum data rates on the line.

Near-end cross talk (NEXT) is a limitation of all CO ADSL systems. With multiple AFE channels on a single chip, internal crosstalk becomes a potential performance limitation for the system. The Fujitsu Quad AFE boasts very low crosstalk (< -100 dB) so that NEXT is only line dependent.

Excellent low noise performance through the receive path is achieved with a unique input architecture in the KeyWaveTM II Quad AFE. No additional receive path amplification is required either in the form of an amplifier or as an active hybrid interface. The line driver is the only additional active component required for connection to the line. Fabrication using Fujitsu’s renowned 0.35 Triple Well process technology maximises isolation of digital and analogue sections.

Priced at $21 each in quantities of 10, 000, the MB86628 KeyWave II Quad AFE is the latest offering from the family of Fujitsu ADSL products and is part of Fujitsu’s on going commitment to leading-edge developments in DSL technology.

This product information is also available on the WWW at:
http://www.fujitsu-fme.com/news/press/start.php3

A medium resolution picture relevant to this press release can be found by
following the link: ftp://ftp.jdk.co.uk/Fujitsu/Press/MRPR716.jpg

For a high resolution download option please follow the link:
ftp://ftp.jdk.co.uk/Fujitsu/Press/HRPR716.zip

Further information on Fujitsu Microelectronics Europe’s products is available on our new WWW address at: http://www.fujitsu-fme.com

ISSUED ON BEHALF OF:

Fujitsu Microelectronics Europe
Am Siebenstein 6-10
D-63303 Dreieich-Buchschlag
Germany
Tel: +49-6103-690257
Fax: +49-6103-690122
E-mail: ines.polak@fujitsu-fme.com

Contact: Ines Polak


MORE INFORMATION FROM:

JDK Marketing Communications
The Old Granary
Squerryes
Goodley Stock Road
Westerham, Kent TN16 1SL
Tel: 01959 562772
Fax: 01959 562800
E-mail: sarah@jdk.co.uk

Contact: Jonna Muggeridge






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