XMT5370B622ST Avago Technologies US Inc., XMT5370B622ST Datasheet - Page 3

• Manufacturer Part Number: XMT5370B622ST
• Manufacturer: Avago Technologies US Inc.

Specifications of XMT5370B622ST

• Operating Temperature Classification: Commercial
• Package Type: DIP With Connector
• Mounting: Through Hole
• Pin Count: 20
• Lead Free Status / RoHS Status: Not Compliant

XMT5370622 Block Diagram
Functional Description
The ECL inputs allow operation from many logic families
and both single-ended or differential signals. As both
DATA and DATA are internally tied to V
operation the unused input requires no connection or
biasing.
The disable function disables the laser bias and
modulator. The switching threshold is V
input is not connected the module is enabled. This
input may be connected to a CMOS HI or tied to V
disable.
The module provides the necessary bias and modulation
control to maintain the extinction ratio at better than
8.2 dB and the waveform is compliant with SONET/SDH
Eyemask standard G.957.
3
DATA
DATA
DISABLE
INPUT
ECL
BB
, for single ended
CC
MODULATOR
LASER
-3.2 V. If this
CC
to
The laser bias control loop compensates for temperature
induced variations in laser performance. The bias current
monitor indicates the amount of dc current supplied
to the laser. (This is approximately the laser threshold
current).
The rear facet monitor is a signal proportional to the
laser output power. This can be used as part of a HI/LO
light alarm.
In the absence of data the laser will emit a mean optical
power within the specified limits. The extinction ratio and
duty cycle distortion are specified assuring a 50% duty
cycle at the correct data rate.
LASER BIAS
LASER BIAS
CONTROL
DRIVER
LASER
(rear facet monitor)
PHOTODIODE
LASER BIAS
MONITOR
REAR FACET
MONITOR