ML4621 Datasheet PDF | Micro Linear

Micro Linear ML4621

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.

Part No.	ML4621
Datasheet	ML4621 Download
Manufacturer	Micro Linear
Description	Data Quantizer
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GENERAL DESCRIPTION

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 with a user selectable reference voltage. This circuit monitors the peaks of the input signal and provides a logic level output indicating when the input falls below an acceptable level. This output can be used to disable the quantizer and/or drive an LED, providing a visible link status.

FEATURES

s 50MHz minimum bandwidth for data rates of up to 100MBd Can be powered by either 5V providing TTL level outputs, or -5.2V providing ECL level outputs Low noise design: 25µV RMS over 50MHz noise bandwidth Adjustable link monitor function s s s s s Wide 55dB input dynamic range 10ns minimum input pulse BLOCK DIAGRAM (Pin Configuration Shown is for PLCC Version) 10 CF1 6 5 VIN+ VIN– VDC 8 e e S e s a e l P A1 DC AMP REF THRESHOLD GENERATOR w e N r o f 4 2 6 4 L /M 2 2 6 4 L M...