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SiGe Semiconductor ships optical interface ICs

Posted: 03 May 2002 ?? ?Print Version ?Bookmark and Share

Keywords:se1030? se1031? se1230? lightcharger? optical interface ic?

SiGe Semiconductor Inc. has signaled its entry to the optoelectronics market with the release of its first batch of LightCharger optical interface ICs that includes two transimpedance amplifiers (TIAs) and an AGC amplifier.

The SE1030 and SE1031 TIAs and the SE1230 AGC amplifier are claimed by the company to improve sensitivity and noise performance of fiber-optic modules used in crossconnects, routers, and modems that support OC-48 and STM-16 transmission rates.

Designed for low-noise front end receiver systems up to 2.5Gbps, the TIAs incorporate an AGC architecture that ensures the output from the front end does not saturate the output driver stage that follows. This allows up to 2.6mA sensitivity for input signals and a noise sensitivity of -26dBm for 10(-10) bit error rate.

The SE1030 dissipates 170mW, while the SE1031 consumes 110mW, making them suitable for SFF applications.

Positioned after the TIAs in the receive chain, the SE1230 offers a gain of up to 23.5dB, providing the amplification required to boost input signals for the serdes. The device also offers <12dB NF and a power dissipation of 230mW, and is suitable for signal control in telecom and datacom applications.

All three devices operate from a single 3.3V supply and can be configured for single-ended or differential operation, allowing them to accommodate application-specific wire bond options.

The SE1030 and SE1031 are provided in bare die form and are priced at $4.85 in 10,000-unit quantities. The SE1230 is packaged in a standard 32-pin LFQP measuring 5mm2 and is quoted at $14.50.

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