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'First '10Gbit/s transimpedance amps offer improved sensitivity

Posted: 14 Dec 2007 ?? ?Print Version ?Bookmark and Share

Keywords:transimpedance amplifier? SiGE process? CMOS TIA?

Nanotech Semiconductor Ltd has unveiled a new family of 2.5Gbit/s and the first 10Gbit/s CMOS transimpedance amplifiers (TIA) that offers increased sensitivity compared to the existing solutions, typically in expensive SiGe processes.

The NT25L55 offers -33dBm typically at 2.5Gbps, with a standard PIN diode and with 33mA current consumption. The NT25L55 can be used to replace APD based solutions in GPON networks, offering cost and power savings.

The NT28L50 and NT28L51 offer -25dBm typically at 10Gbps with 33mA consumption. The NT28L50 is designed for upcoming SFP++ modules, while the NT28L51 is tailored to LRM applications. Both ICs are touted to offer the highest performance in the world, but also are the first CMOS 10Gbit/s TIAs.

All ICs require a single 3.3V supply and are pin-compatible with previous products. On-chip filtering feature eliminates the need for capacitors inside the ROSA, offering both BOM cost reduction as wekk as faster and lower cost assembly. Photodiode Monitor source/sink and output polarity are both bond-programmable, offering complete build flexibility.

Production ramp-up of the devices are expected early in 2008.

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