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SY100EL1001 Datasheet(PDF) 1 Page - Micrel Semiconductor |
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SY100EL1001 Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 6 page DESCRIPTION s Up to 1.25Gb/s operation s 75mA peak drive current s Separate modulation control s Separate master reset for laser safety s Differential inputs for data and clock s 75K Ω input pulldown resistor s Single power supply s Available in 16-pin SOIC package The SY100EL1001 is a high speed current source for driving a semiconductor laser diode in optical transmission applications. The output current modulation is DC – voltage controlled. The integrated circuit contains the following functional blocks: • Input Line Receiver • D Flip-Flop • Bias Control Circuitry • Output Current Switch A logic HIGH level at the data input results in the modulation current flowing through the OUT pin on the next rising edge of the clock. A logic HIGH level at the master reset input will disable the modulation current. The device incorporates complementary open collector outputs with a capability of driving peak current of 75 mA. The laser driver current is adjustable by selection of RSET. The resistor REXT must be placed between OUT and VCC to dissipate the worst case power. RSER is recommended to fix laser diode matching issues. The SY100EL1001 utilizes the high performance bipolar ASSET technology. FEATURES LASER DIODE DRIVER WITH INPUT D FLIP-FLOP PIN CONFIGURATION PRELIMINARY SY100EL1001 Rev.: E Amendment: /0 Issue Date: August, 1998 BLOCK DIAGRAM CLK, CLK D, D MR VCC REXT OUT VBB RSET VEE RSER to Laser Diode BIAS Control MC Modulation Control D Flip-Flop OUT NC 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 CLK CLK RSET VCCO D D MR VCC NC MC OUT OUT VBB NC VEE Top View SOIC Z16-2 1 |
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