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SY88822VKG Datasheet(PDF) 1 Page - Micrel Semiconductor |
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SY88822VKG Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 5 page 1 SY88822V Micrel, Inc. M9999-072505 hbwhelp@micrel.com or (408) 955-1690 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.: B Amendment: /0 Issue Date: July 2005 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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