General Description

The EL6281C is a combination read + 3 write level laser driver with IV amplifier. A dual amplitude, dual frequency RF oscillator sums on the output for laser noise reduction during read or write. All these functions are provided in 24-lead QSOP and LPP packages.

The ENABLE pin enables the read & write channels. Positive current supplied to the IIN lines, through user selected resistors, allow the full scale range of each amplifier to be matched to the full scale range of the users control DACs. When the WEN pins are switched low, the respective current is summed to the output with 1ns rise and fall times.

Features

• Read + 3 Write Channel laser driver with oscillator & fast I/V amplifier

• Rise time = 0.8 nsec

• Fall time = 0.8 nsec

• 200V/µs I/V amplifier

• 100X gain, 100mA low noise read channel

• 200X gain, 200mA write channel

• Two 100X gain, 100mA write channels

• 500MHz, 100mAP-P Oscillator with dual frequency and amplitude control

• 3.3V compatible logic signals

• Single +5V supply

Applications

• CD-RW to 16X

• CD-R to 32X

• Writable Optical Disk Drives