General Description
The EL6270C is a high-performance single channel laser diode power regulator and oscillator for a grounded cathode laser diode and photodiode system. The EL6270C’s APC (Automatic Power Controller) will set the average laser diode input current for a desired average photodiode output current. The APC can provide up to 100 mA of DC current.

FEATUREs
• Low output noise = 4.0nA/rt-Hz
• High-performance laser diode driver
• Pin compatible with EL6257
• Voltage-controlled output current source to 150 mA per channel, requiring one external set resistor per channel
• Current-controlled output current source to 150 mA per channel
• Rise time = 1.0 ns
• Fall time = 1.1 ns
• On chip oscillator with frequency and amplitude control by use of external resistors to ground
• Oscillator to 500 MHz
• Oscillator to 100 mA pk/pk
• Single +5V supply (±10%)
• Disable feature for power-up protection and power savings
• TTL/CMOS control signals

APPLICATIONs
• DVD-RAM high speed drives
• CD-RW applications
• Writable optical drives
• Laser diode current switching