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SY88822V Fiches technique(PDF) 1 Page - Micrel Semiconductor

No de pièce SY88822V
Description  LASER DIODE DRIVER WITH OUTPUT ENABLE
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Fabricant  MICREL [Micrel Semiconductor]
Site Internet  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

SY88822V Fiches technique(HTML) 1 Page - Micrel Semiconductor

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SY88822V
Micrel
DESCRIPTION
s Single 3.3V or 5V power supply
s Up to 155Mbps operation
s Modulation current to 30mA
s PECL output enable
s Differential PECL inputs
s Available in a tiny 10-pin (3mm) MSOP
FEATURES
5V/3.3V 155Mbps
LASER DIODE DRIVER
WITH OUTPUT ENABLE
SY88822V
APPLICATIONS
s 155Mbps SONET
Rev.: A
Amendment: /0
Issue Date:
March 2003
The SY88822V is a high speed current switch for driving
a semiconductor laser diode in optical transmission
applications. The modulation current (I
OUT) is controlled by
the current (I
RSET) through the external resistor RSET. The
output OUT is HIGH and no current flows through OUT
when output enable is HIGH.
The device incorporates complementary open collector
outputs with a 30mA maximum current driving capability.
The external resistor R
EXT must be placed between /OUT
and V
CC to dissipate the worst case power. RSER is
recommended to compensate for laser diode matching
issues. Pin 9 and pin 10 should be connected to achieve
better performance.
The SY88822V utilizes the high performance bipolar
ASSET™ technology.
ASSET is a trademark of Micrel, Inc.
FUNCTIONAL BLOCK DIAGRAM
REXT
VCC
/EN
/DIN
DIN
Internal
Logic
VCC
GND
RSET
RSET
VREF
40X
RSER
IMOD
/OUT
GND
to Laser Diode
OUT


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