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AMS, Italtel develop APON replacement

Posted: 06 Feb 2002 ?? ?Print Version ?Bookmark and Share

Keywords:austriamicrosystems? italtel? networking chipset? data communication ic? atm optical network?

Addressing the need of applications such as teleworking, video distribution and high-speed data sharing, Italtel and austriamicrosystems have developed the KEOPE (Key Electro-Optical Elements) chipset that offers high-performance and low-cost transmission of analog and digital systems.

The chipset is aimed to replace xDSL and ATM-based Passive Optical Network systems (APONs) currently used in the "last mile" of the link between the user and the local exchange.

APONs have been the the preferred option for many telecommunication suppliers, combining bandwidth, broadcast and multicast capability, flexibility and long reach. But the system requires accurate and fast handling of the optical power levels on both the transmitter and receiver side when operating in burst-mode transmission.

The KEOPE chipset addresses this problem by integrating fast and precise DACs that control transmission power, receiver thresholds and gain levels. Additional ADCs track the signal levels in the receiver and reconfiguration and self-calibration of the unit is provided via a microcontroller interface.

The chipset is fabricated using mixed-signal SiGe technology, which enables digital processing of significant complexity at the same time supporting low-noise analog functions. Austriamicrosystems claims its SiGe BiCMOS technology require only two additional masks, making it a relatively inexpensive high-frequency, low-power and low-noise process.

KEOPE conforms to the ITU-T G.983 standard, as well as 2.5Gbps STM-16 SDH interfaces.





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