Inphi Intros Amplifier

Inphi’s new transimpedance amplifier improves performance and lowers transceiver design cost for enterprise applications

December 6, 2002

1 Min Read

WESTLAKE VILLAGE, Calif. -- Inphi Corporation, a privately held electronic components company, today announced availability of its 1341TL transimpedance amplifier (TIA) for SONET/SDH OC-192/STM-64 and 10 Gigabit Ethernet metro/access applications. The new high-gain, low-noise TIA operates at data rates up to 10.7 Gbps to directly drive a clock and data recovery (CDR) circuit or transceiver. With a differential gain of 12k Ohms, the 1341TL eliminates the need for an external post-amplifier between the TIA and the demultiplexer, lowering transponder costs for both short- and long-reach optical systems.The 1341TL has a typical receiver sensitivity of –20 dBm at a bit error rate (BER) of 10-12 (see Figure 1a), a differential output swing of 700 millivolts peak-to-peak, and an input current overload of 2.2 milliamps to maximize optical sensitivity and overall system performance. The pad layout for the 1341TL is optimized for TO can assemblies (see Figure 1b) to enable small form factor designs that comply with recent multisource agreements (MSAs) for short-reach transponders. The 1341TL also includes DC slice level adjust (DCA) to allow for tuning of the decision threshold. This device consumes less than 275 milliwatts of power and operates off a single +3.3 volt power supply, making it ideal for XPAK and XFP transponder modules.“Our customers are integrating the 1341TL into a TO can assembly to meet the reduced size, cost, and power consumption requirements of optical transponders designed for enterprise applications,” said Paul Washkewicz, vice president of sales and marketing at Inphi. “The compact TO can design, together with Inphi’s integrated post-amplifier, enable customers to deliver the best possible performance to the end user with the most cost-effective footprint and bill of materials.”Inphi Corp.

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