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| EL6140C (R) EL6140C Dual Laser Driver with APC Amp PRODUCT BRIEF (R) Features * Read + 2 write channel laser driver with oscillator and fast I/V amplifier plus a separate ROM laser driver with oscillator * 200V/s I/V amplifier * 100X gain, 100mA low noise read channel * 250X gain, 300mA and 150X gain, 150mA write channels * 500MHz, 100mAP-P oscillator * Write rise/fall times = 0.8ns * Single +5V supply General Description The EL6140C is a combination read + 2 write level laser driver and IV amplifier, with an extra read + oscillator ROM channel for use in duallaser `combo' applications. A separate (amplitude and frequency) oscillator modulates the selected output for laser noise reduction during read or write. The CD pin, when high, selects the CD (write) laser. Positive current supplied to the IIN lines, through a user selected external resistor, allow the full scale range of each amplifier to be matched to the full scale range of the users control DACs. When the write laser is selected, and the WEN pins are switched low, the respective current is summed to the output with 1ns rise and fall times. When the CD pin is low, the ROM laserdiode is driven by output IOUT2, and no current will appear at output IOUT1. The 100mAP-P (max) oscillator is switched on and off by the OSCEN line. The CD line allows the oscillator to operate at different amplitudes and frequencies for each laser. The entire chip is powered down when ENABLE is low. The user can define the gain of the I/V amplifier. With a slew rate of 200V/s, the I/V amplifier can normally settle to 1% within 30ns. Applications * * * * Combo CD-RW + DVD-ROM CD-RW to 16X CD-R to 32X Writable optical disk drives Ordering Information Part No EL6140CU Temp. Range -40C to +85C Package 24-Pin QSOP Outline # MDP0040 Connection Diagram 1 VOUT 2 VREF 3 IINR 4 IIN2 5 RF1 6 IIN3 7 GND 8 RF2 9 WEN2 10 CD 11 WEN3 12 NC PDIN 24 VDD 23 VDD 22 IOUT1 21 GND 20 GND 19 RAMP1 18 RAMP2 17 ENABLE 16 April 18, 2002 OSCEN 15 IOUT2 14 VDD 13 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-ELANTEC or 408-945-1323 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Elantec (R) is a registered trademark of Elantec Semiconductor, Inc. Copyright (c) Intersil Americas Inc. 2002. All Rights Reserved EL6140C EL6140C Dual Laser Driver with APC Amp PRODUCT BRIEF Effective May 15, 2002, Elantec, a leader in high performance analog products, is now a part of Intersil Corporation. 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 (R) Sales Office Headquarters April 18, 2002 NORTH AMERICA Intersil Corporation 7585 Irvine Center Drive Suite 100 Irvine, CA 92618 TEL: 949-341-7000 FAX: 949-341-7123 Elantec 675 Trade Zone Blvd. Milpitas, CA 95035 TEL: 408-945-1323 800: 888-ELANTEC FAX: 408-945-9305 EUROPE Intersil Europe Sarl Avenue William Fraisse 3 1006 Lausanne Switzerland TEL: +41-21-6140560 FAX: +41-21-6140579 ASIA Intersil Corporation Unit 1804 18/F Guangdong Water Bldg. 83 Austin Road TST, Kowloon Hong Kong TEL: +852-2723-6339 FAX: +852-2730-1433 Printed in U.S.A. 2 |
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