Functional Description

The Lucent Technologies Microelectronics Group LG1628AXA is a hybrid integrated circuit that combines the Lucent LG1628A gallium arsenide (GaAs) transimpedance amplifier chip with an external Si dual operational amplifier and necessary filtering to achieve an ultrawide dynamic range amplifier. The LG1628AXA is capable of handling input currents from 3 µAavg to 4 mAavg (patent pending). Amplifier operation is from a single –5.2 V power supply. The targeted transmission system is SONET OC-48 and SDH STM-16.

Features

■ High data rate: 2.5 Gbits/s

■ High gain: 5.8 kΩ transimpedance

■ Complementary 50 Ω outputs

■ Low noise

■ Ultrawide dynamic range

■ Single –5.2 V ECL power supply

Applications

■ SONET/SDH receivers

■ SONET/SDH test equipment

■ Digital video transmission