跨阻放大器

LST1142

The LST1142 is a dual-channel, differential input differential output, linear trans-impedance amplifier (TIA) for 100G and 200G coherent detection receivers for long haul and metro applications.

The LST1142 can operate in automatic gain control (AGC) mode and manual gain control (MGC) mode. It can adjust its trans-impedance from 50Ω to 5kΩ and delivers an output voltage of 300-900 mVppd in AGC mode.

The LST1142 supports a very wide input optical power range. It provides low noise, linear amplification for differential input current up to 3 mApp.

The LST1142 has peaking control functions to adjust frequency response for optimization of PD and DSP combination; it also has an output peak detector monitor function.

The LST1142 operates from a +3.3V power supply, and available in die form.