M02044CG-31 Datasheet, PDF (9/22 Pages) M/A-COM Technology Solutions, Inc. – 3.3/5V Limiting Amplifier for Applications from 100 Mbps to 622 Mbps

3.0 Functional Description
3.1
Overview
The M02044 is a highly integrated high-gain limiting amplifier that can be used with the same board layout and
footprint as the MC2044C. Featuring PECL outputs, the M02044 is intended for use in applications from 100 Mbps
to 622 Mbps. Full output swing is achieved even at minimum input sensitivity. The M02044 can operate with a 3.3V
or 5V supply.
Included in the M02044 is a programmable signal-level detector, allowing the user to set thresholds at which the
logic outputs are enabled. The signal detect function has typically 2 dB (optical) of hysteresis which prevents
chatter at low input levels. A squelch function, which turns off the output when no signal is present, is provided by
externally connecting the LOS Status output to the JAM input.
The M02044 has CMOS Status and LOS outputs.
Figure 3-1. Block Diagram Example
I_REF
V_TT
Biasing
Jam
DINP
DINN
Limiting
Amplifier
Output
Buffer
PECLP
PECLN
Offset cancel
Level
Detect
Comparator
Threshold
Setting
Circuit
Regulator
ST_SET
V_CC3 V_CC
ST
LOS
02044-DSH-002-A
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