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SY88702 Dataheets PDF



Part Number SY88702
Manufacturers Micrel Semiconductor
Logo Micrel Semiconductor
Description LASER DIODE DRIVER
Datasheet SY88702 DatasheetSY88702 Datasheet (PDF)

Micrel 5V 622Mbps LASER DIODE DRIVER WITH OUTPUT ENABLE SY88702 SY88702 FEATURES s s s s s s Up to 622Mbps operation Modulation current to 25mA PECL output enable Differential PECL inputs Single 5V power supply Available in a tiny 10-pin (3mm) MSOP DESCRIPTION The SY88702 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.

  SY88702   SY88702



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Micrel 5V 622Mbps LASER DIODE DRIVER WITH OUTPUT ENABLE SY88702 SY88702 FEATURES s s s s s s Up to 622Mbps operation Modulation current to 25mA PECL output enable Differential PECL inputs Single 5V power supply Available in a tiny 10-pin (3mm) MSOP DESCRIPTION The SY88702 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 complementary open collector outputs with 25mA maximum current driving capability. The external resistor R EXT must be placed between /OUT and VCC to dissipate the worst case power. RSER is recommended to compensate for laser diode matching issues. The SY88702 utilizes the high performance bipolar ASSET™ technology. APPLICATIONS s 622Mbps SONET www.DataSheet4U.com FUNCTIONAL BLOCK DIAGRAM VCC REXT /OUT OUT RSER DIN /DIN Internal Logic /EN 40X VCC GND VEE VREF RSET IMOD to Laser Diode RSET ASSET is a trademark of Micrel, Inc. Rev.: B Amendment: /0 1 Issue Date: August 2003 Micrel SY88702 PACKAGE/ORDERING INFORMATION Ordering Information /EN 1 DIN 2 /DIN 3 VREF 4 RSET 5 10 VCC 9 OUT 8 /OUT 7 GND 6 GND Part Number SY88702KC SY88702KCTR* SY88702KI SY88702KITR* *Tape and Reel Package Type K10-1 K10-1 K10-1 K10-1 Operating Range Commercial Commercial Industrial Industrial Package Marking 702 702 702 702 10-Pin MSOP (K10-1) PIN DESCRIPTION Pin Number 1 2, 3 4 5 6, 7 9, 8 10 Pin Name /EN DIN, /DIN VREF RSET GND OUT, /OUT VCC Pin Function 100k PECL compatible input with 75kΩ pull-down resistor. Modulation current goes to zero when deasserted high. Differential 100k PECL compatible input with 75kΩ pull-down resistors. Voltage reference for use with RSET. An external resistor connected from here to VREF sets the reference current for IOUT. Device ground. Differential open collector current outputs. Positive power supply. TRUTH TABLE(1) D L H X /D H L X /EN L L H OUT (2) H L H /OUT L H L Note 1. L = LOW, H = HIGH, X = don't care. Note 2. H = IOUT = 0mA. 2 Micrel SY88702 Absolute Maximum Ratings(Note 1) Power Supply Voltage (VCC) ............................ 0V to +7.0V Input Voltage (VIN) .............................................. 0V to VCC Output Current (IOUT) ................................................. 25mA Power Dissipation (PD) ........................................... 250mW Storage Temperature Range (TS) ............ –55°C to +125°C Operating Ratings(Notes 2,3,4) Supply Voltage (VCC) .................................. +4.5V to +5.5V Ambient Temperature (TA), Note 5 ............ –40°C to +85°C Junction Temperature (TJ), Note 5 ............ –40°C to 100°C Resistor to Dissipate Power (REXT) .................. 10Ω to 50Ω Laser Diode Serial Resistor (RSER) .................... 0Ω to 50Ω Resistor to Adjust Current (RSET) .......... 150.


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