Description

The ZL40518 is a laser diode driver for high speed operation of a grounded laser diode. The driver consists of 3 controllable channels: a switchable, low noise, read channel and two switchable write channels. Write current pulses are enabled with the application of a low signal on the /EN pins. A summed output of all channels is available at the IOUT pin. Each channel can contribute up to 250 mA to the total output current of up to 300 mA. A total read channel gain of 100 and write channels 2 and 3 with a gain of 250 and 150 respectively are provided between each reference current input and output.

Features

• Current-controlled Output Current source

• Output Current per Channel to 250 mA

• Total Output Current to 300 mA

• Rise Time 1.0 ns, Fall Time 1.1 ns

• On-chip RF Oscillator

• External Resistor Control of Oscillator Swing and Frequency

• 200 to 500 MHz Oscillator Range

• 100 mA Maximum Oscillator Swing

• Single +5 V Power Supply (±10)

• Low-power Consumption

• Common Enable, Disable Input

• TTL/CMOS control signals

• Small SS016 Package

Applications

• DVD R/RW

• CD R/RW