DESCRIPTION

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.

FEATURES

■ Up to 1.25Gb/s operation

■ 75mA peak drive current

■ Separate modulation control

■ Separate master reset for laser safety

■ Differential inputs for data and clock

■ 75KΩ input pulldown resistor

■ Single power supply

■ Available in 16-pin SOIC package