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Transceiver targets 4x Fiber Channel apps

Posted: 27 Jan 2005 ?? ?Print Version ?Bookmark and Share

Keywords:analog devices? adi? sfp? small form factor pluggable? optical transceiver chipset?

Analog Devices Inc. (ADI) announced the availability of a SFP (small form factor pluggable) optical transceiver chipset and reference design that supports both gigabit ethernet and fiber channel data rates up to 4.25Gbps in storage area network (SAN) equipment.

According to market research firm International Data Corp. (IDC), Fiber Channel switch port shipments are expected to grow annually by an average of 40 percent through 2008. Optical transceivers that connect to Fiber Channel switches at 4.25Gbps will be key components in this market, enabling developers of SAN equipment to double the existing data rate, while remaining compatible with older modules running at 1Gbps and 2Gbps data rates.

The high-performance 1x/2x/4x SFP chipset meets the requirements of the Fiber Channel MSA (Multisource Agreement) specifications and is optimized for SFF-8472 digital diagnostics. The SFP chipset includes four ADI products:

? The ADN2882, a 4.25Gbps transimpedance amplifier (TIA), with sensitivity of -22dBm and power dissipation of 75mW.

? The ADN2892, a 4.25Gbps limiting amplifier, features selectable bandwidth for operation at the 1x and 2x Fiber Channel rates (1.063Gbps and 2.125Gbps) and the gigabit Ethernet rate (1.25Gbps) ensuring backwards compatibility to 1x and 2x Fiber Channel modules, while dissipating 160mW of power.

? On the transmit side, the company offers a choice of laser diode drivers.

? ADuC7020 precision microcontroller (MCU)

The 1x/2x/4x multi-rate reference design includes an SFP board and the optics to enable immediate evaluation, speed time to market and reduce development costs. In addition, the reference design includes a host board, I?C support, Gerber files, object and source code for the MCU, a graphical user interface and technical documentation.

The SFP reference design is available now. The ADN2882 TIA, ADN2892 limiting amplifier and ADN2870 dual-loop laser driver are available in production quantities now. Samples of the ADN2882 TIA are available in either die form or in a receive optical sub-assembly (ROSA). The ADN2871 single-loop laser driver will sample next month (February 2005). The ADuC7020 precision MCU is sampling now and will be available in production quantities in July 2005. The chipset will sell in high volume for $3.90.

- Janine Love

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