EL6119 ® Data Sheet Dual 4-Channel Laser Diode Driver + Oscillator The EL6119 is a dual four-channel laser diode current amplifier that provides controlled current to both a CD and DVD laser diode. Channels 2, 3, and 4 should be used as the write channels, with switching speeds of approximately one nanosecond rise/fall time. All four channels are summed together at the IOUT output, allowing the user to create multilevel waveforms in order to optimize laser diode performance. The level of the output current is set by an analog voltage applied to an external resistor which converts the voltage into a current at the IIN pin (virtually ground). The current seen at this pin is then amplified to become a current source at pin IOUT. June 15, 2004 FN7208 Features • Leadless plastic package • Voltage controlled output current source, requiring one external set resistor per channel • Rise time = 0.8ns • Fall time = 0.8ns • On chip oscillator with frequency and amplitude control by use of external resistors to ground • Oscillator to 500MHz • Oscillator to 100mAPK/PK • Single +5V supply (±10%) • Disable feature for power-up protection and power savings Output current pulses are enabled when an ‘L’ signal is applied to the WEN pin. No output current flows when WEN is ‘H’ and additional laser diode protection is provided since the WEN input will float high when open. Complete IOUT shutoff is also achieved by holding the ENABLE pin low, which will override the WEN control pins. • CMOS control signals Each laser driver has a separate ENABLE pin to allow total shutdown of each laser driver when not in use. • Laser diode current switching Applications • CD + DVD Combo applications • Writable optical drives An on-chip 500MHz oscillator is provided to allow output current modulation when in read mode. The oscillator is enabled when the OSCEN pin is held high. Complete control of amplitude and frequency is set by two external resistors connected to ground at pins RFREQ and RAMP (see graphs in this data sheet for further explanation). Ordering Information PART NUMBER PACKAGE TAPE & REEL PKG. DWG. # EL6119CL 32-Pin QFN - MDP0046 EL6119CL-T13 32-Pin QFN 13” MDP0046 1 Get FULL DATASHEET CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2003-2004. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc. All other trademarks mentioned are the property of their respective owners. EL6119 All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 2