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PMC-Sierra unrolls PHY devices for GPON, EPON FTTH

Posted: 19 Sep 2006 ?? ?Print Version ?Bookmark and Share

Keywords:PMC-Sierra? analog front end devices? AFE? GPON? PON?

PMC-Sierra Inc. has announced the availability of four new analog front end devices (AFEs) for GPON and EPON FTTH equipment. Using these new PHY devices, PMC-Sierra said system and sub-system OEMs will be able to lower the cost of GPON and EPON access network equipment that delivers carrier-grade triple-play services to consumers worldwide.

"[The new AFEs] will enable system OEMs to produce higher-performance systems for IEEE802.3ah EPON, which is widely deployed in Asia, and ITU-T G.984 GPON, which is increasingly popular in North America," said Victor Vaisleib, general manager of the FTTH Business Unit at PMC-Sierra. "PMC-Sierra is the only company with a complete set of AFEs and networking SoCs for both PON standards. In particular, our GPON AFEs significantly exceed the ITU specifications for burst acquisition timing, sensitivity and dynamic range, and include a built-in diagnostic function, providing for a more robust, yet lower-cost solution than those previously available."

The new GPON devices include the PAS7351 GPON trans-impedance amplifier (TIA) and the PAS7361 GPON limiting amplifier (LIA), which together form a Gigabit PON optical line terminal (OLT) burst receiver for use in ITU-T G.984 GPON transceivers. The company said a GPON transceiver based on the PAS7351/PAS7361 can surpass the requirements for GPON low power and high power Class B+ burst-mode applications, enable a 64-user split ratio at low signal-to-noise environments, and increase network design flexibility. The devices can provide a signal sensitivity of -33dBm with a dynamic range of more than 26dBm. Acquisition time can be as low as 24bits. Both of these devices support PIN and avalanche photodiode (APD) receiver applications and include embedded PON diagnostics functions. The devices use a single 3.3V power supply and provide for LVCML differential output, either AC- or DC-coupled with direct photodiode input.

The GPON PAS7351 TIA and the PAS7361 LIA are priced at $25 for the pair in quantities of 10,000 with samples available today. The EPON PAS5351 TIA and the PAS5361 LIA are also priced at $25 for the pair in 10,000 quantities with samples available today. Both TIA devices are available in unpackaged die.

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