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| EL6293C - Product Brief EL6293C - Product Brief Laser Diode Driver with Waveform Generator Features * Complete programmable laser diode driver * 250mA maximum output * 8bit x 8bit multiplying DAC output provides 8bit full scale adjustment and 8bit resolution at any full scale output * 0.17 nsec timer resolution * Two laser outputs allows read/write DVD and CD combinations * Programmable waveform values support 2.6GB DVD-RAM, 4.7GB DVD-RAM, DVD-R, DVD+RW, DVD-RW, CD-RW, and CD-R * Analog input supports APC * HFM oscillator programmable to 100mAP-P from 200MHz to 600MHz * PLL allows reduced-frequency clock on flex cable * Separate serial input works up to 25Mb/sec General Description The EL6293C is a highly integrated laser diode driver designed to support multi-standard writable optical drives. It accomplishes this by incorporating a waveform generator wherein the diode currents and timing details can be programmed before operation. The data input circuitry inspects the NRZ serial data waveform and generates programmed waveforms in recognition of 3, 4, 5, or 6 or more clock periods of space changing to 3, 4, 5, or 6 or more clock periods of mark, and vice versa. This programmable architecture allows reprogramming of the timers to support different media, DVD or CD standards, and different speeds. The programming is accomplished through a serial interface port. Two outputs are provided to support dual-laser multi-standard optical heads. The EL6293C requires 3.3V and 5V supplies, with all the logical interface operating on the 3.3V supply. The EL6293C is available in a 32-pin LPP package for improved thermal performance and reduced footprint. Connection Diagram 28 MONITOR 26 RGAIN 25 PDIN 24 VREF 23 VSO 22 IOUT1 Thermal Pad 21 GND 20 VSO 19 OUT2 18 OUT2 17 VSO RSET 10 IAPC 11 NC 12 GND 13 GND 14 ENA 15 L/G 16 27 VOUT 29 BUSY 32 SCLK 31 SDIO 30 SEN Applications * Combination DVD writable and CD writable drives * DVD camcorders * DVD video recorders RWB 1 CLK 2 NRZ 3 VSL 4 Ordering Information Part No EL6293CL Temp. Range 0C to +70C Package 32-Pin LPP Outline # MDP0046 GND 5 GND 6 VSA 7 VSA 8 RFREQ 9 May 23, 2001 32-Pin LPP Top View Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a "controlled document". Current revisions, if any, to these specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation. (c) 2001 Elantec Semiconductor, Inc. EL6293C - Product Brief EL6293C - Product Brief Laser Diode Driver with Waveform Generator General Disclaimer Specifications contained in this data sheet are in effect as of the publication date shown. Elantec, Inc. reserves the right to make changes in the circuitry or specifications contained herein at any time without notice. Elantec, Inc. assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement. WARNING - Life Support Policy Elantec, Inc. products are not authorized for and should not be used within Life Support Systems without the specific written consent of Elantec, Inc. Life Support systems are equipment intended to support or sustain life and whose failure to perform when properly used in accordance with instructions provided can be reasonably expected to result in significant personal injury or death. Users contemplating application of Elantec, Inc. Products in Life Support Systems are requested to contact Elantec, Inc. factory headquarters to establish suitable terms & conditions for these applications. Elantec, Inc.'s warranty is limited to replacement of defective components and does not cover injury to persons or property or other consequential damages. Printed in U.S.A. Elantec Semiconductor, Inc. May 23, 2001 675 Trade Zone Blvd. Milpitas, CA 95035 Telephone: (408) 945-1323 (888) ELANTEC Fax: (408) 945-9305 European Office: +44-118-977-6020 Japan Technical Center: +81-45-682-5820 2 |
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