February 1998 ML4621 Data Quantizer GENERAL DESCRIPTION The ML4621 data quantizer is a low noise, wideband monolithic IC designed specifically for signal recovery applications in fiber-optic receiver systems.
It contains a two stage wideband limiting amplifier which is capable of accepting an input signal as low as 2mV with a 55dB dynamic range.
This high level of sensitivity is achieved by using a DC restoration feedback loop which nulls any offset voltage produced in the limiting amplifier.
The output stage is a high speed comparator circuit with both TTL and ECL outputs.
An enable pin is included for added control.
The minimum signal discriminator circuit provides a link monitor function...

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