General Description
The EL6249C is a four channel laser diode current amplifier that provides controlled current to a grounded laser diode. Channels 2, 3, and 4 should be used as the write channels, with switching speeds of approximately one nanosecond rise/fall time. All four channels are summed together at the IOUT output, allowing the user to create multilevel waveforms in order to optimize laser diode performance.

Features
• “Shrink-Small” Outline Package
• Voltage controlled output current source, requiring one external set resistor per channel
• Auto Oscillator On-Off with OUTEN Signals
• Rise time = 0.8ns
• Fall time = 0.8ns
• 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 = 100
• Disable feature for power-up protection and power savings
• CMOS control signals

Applications
• CD-RW applications
• Writable optical drives
• Laser diode current switching