ZL40518

ZL40518 3 Channel Laser Diode Driver Data Sheet 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 ZL40518LDG SSO16 0 ° C to +70° C Tape and Reel Ordering Information October 2004 Applications DVD R/RW CD R/RW CH_R INR /ENR CH_2 IN2 /EN2 VCC IOUT CH_3 IN3 /EN3 RF_freq RF RS RF_mag GND OSCEN PWR_UP Figure 1 - Functional Block Diagram 1 Zarlink Semiconductor Inc. Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc. Copyright 2004, Zarlink Semiconductor Inc. All Rights Reserved. ZL40518 Data Sheet INR IN2 GND RF IN3 /ENR /EN2 /EN3 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC_IN VCC IOUT GND RS PWR_UP OSCEN VCC Figure 2 - Pinout of 16 Pin SSO16 Package (Top View) 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. Ea...