General Description

The EL6277C is a high-performance three channel laser diode current driver that provides controlled current to a grounded laser diode. Channel R and 2 can provide 100mA per channel of DC or pulsed current, while channel 3 can provide 200mA per channel. Channels 2, and 3 must be used as the write channels, with switching speeds of approximately three nanosecond rise/fall time.

特性 Features

? Ultra-Small Package Outline

? High-performance laser diode driver

? Current-controlled output current source, 100 mA channel R and 2, 200mA channel 3, requiring one external set resistor per channel

? Rise time = 3.0 ns

? Fall time = 3.5ns

? 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)

? Current amplification = 100

? Disable feature for power-up protection and power savings

? TTL/CMOS control signals

Application

? CD-RW applications

? Writable optical drives

? Laser diode current switching