General Description

The EL6276C is a four channel laser diode current amplifier that provides controlled current to a grounded laser diode. The four amplifiers can provide up to 140mA per channel of DC or pulsed current. Channels 2, 3, and 4 must be used as the write channels, with switching speeds of approximately three nanosecond rise/fall time.

Features

• “Shrink-Small” Outline Package

• Voltage-controlled output current source to 140mA per channel, requiring one external set resistor per channel

• Current-controlled output current source to 140mA per channel

• Rise time = 3.0ns

• Fall time = 3.5ns

• On chip oscillator with frequency and amplitude control by use of external resistors to ground

• Oscillator to 500MHz

• Oscillator to 100mA pk/pk

• Single +5V supply (±10)

• Current amplification = 100X

• Disable feature for power-up protection and power savings

• TTL/CMOS control signals

Applications

• CD-RW applications

• Writable optical drives

• Laser diode current switching