Description
The ZL40510/14 are high performance laser drivers capable of driving two separate cathode grounded laser diodes (e.g., 650 nm and 780 nm laser diodes).
The ZL40510/14 contain a 150 mA low-noise read channel (ChR), and three 500 mA write channels (Ch2, Ch3 and Ch4). The read channel amplifies the positive current supplied at its reference input, INR, by a fixed factor of 100. Write channels amplify the positive currents supplied at its reference inputs IN2, IN3, and IN4 by a fixed factor of 240.
An on-chip RF oscillator is provided for the reduction of laser mode hopping noise.
The ZL40510 offers higher tolerance performance.

Features
• Single 5 V supply (±10%)
• 150 mA low-noise read channel with 100 x current gain
• Three 500 mA write channels with 240 x gain
• Combined channel output 700 mA
• Dual output for DVD/CD laser
• Rise and fall times 1 ns typical
• Oscillator, 500 MHz, 100 mA with external resistor control of frequency and amplitude
• Power Up/Down control
• LVDS control signals
• > 2 kV ESD
• Low Rth QFN package
• Contact Zarlink for available Custom Gain and Input Impedance options

Applications
• DVD±RW/RAM
• DVD±R
• CD-RW
• CD-R
• Write optical drives
• Laser Diode current switch
• Supports double density DVD