SY88822V Datasheet | Micrel Semiconductor

Micrel, Inc. 5V/3.3V 155Mbps LASER DIODE DRIVER WITH OUTPUT ENABLE Features s Single 3.3V or 5V power supply s Up to 155Mbps operation s Modulation current to 30m A s PECL output enable s Differential PECL inputs s Available in a tiny 10-pin (3mm) MSOP APPLICATIONS s 155Mbps SONET DESCRIPTION The SY88822V is a high speed current switch for driving a semiconductor laser diode in optical transmission applications. The modulation current (IOUT) is controlled by the current (IRSET) through the external resistor RSET. The output OUT is HIGH and no current flows through OUT when output enable is HIGH. The device incorporates plementary open collector outputs with a 30m A maximum current driving capability. The external resistor REXT must be placed between /OUT and VCC to dissipate the worst case power. RSER is remended to pensate 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. FUNCTIONAL BLOCK DIAGRAM REXT /OUT DIN /DIN /EN Internal Logic IMOD 40X VREF RSET GND RSET ASSET is a trademark of Micrel, Inc. M9999-072505 hbwhelp@micrel. or (408) 955-1690 OUT RSER to Laser Diode VCC GND Rev.: B Amendment: /0 Issue Date: July 2005 Micrel, Inc. PACKAGE/ORDERING INFORMATION /EN 1 DIN 2 /DIN 3 VREF 4 RSET 5 10 OUT 9 OUT 8 /OUT 7 GND 6 VCC 10-Pin MSOP (K10-1) Ordering Information Part Number SY88822VKC SY88822VKCTR(1) SY88822VKG Package Type K10-1 K10-1...