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| EL6270C - Product Brief EL6270C - Product Brief Laser Driver with Ocillator and APC Features * Low output noise = 4.0nA/rt-Hz * High-performance laser diode driver * Pin compatible with EL6257 * Voltage-controlled output current source to 150 mA per channel, requiring one external set resistor per channel * Current-controlled output current source to 150 mA per channel * Rise time = 1.0 ns * Fall time = 1.1 ns * On chip oscillator with frequency and amplitude control by use of external resistors to ground * Oscillator to 500 MHz * Oscillator to 100 mA pk/pk * Single +5V supply (10%) * Disable feature for power-up protection and power savings * TTL/CMOS control signals General Description The EL6270C is a high-performance single channel laser diode power regulator and oscillator for a grounded cathode laser diode and photodiode system. The EL6270C's APC (Automatic Power Controller) will set the average laser diode input current for a desired average photodiode output current. The APC can provide up to 100 mA of DC current. An on-chip programable oscillator is provided to allow current modulation of the output laser current. Two external resistors control of amplitude and frequency. The Oscillator can provide up to 100mA pk/pk. A disable function is included which reduces supply current to less than 5A. Connection Diagram CE GND RAMP RFREQ 1 2 3 4 8-Pin SOIC/MSOP-8 8 7 6 5 VS IOUT LSI COMP Applications * * * * DVD-RAM high speed drives CD-RW applications Writable optical drives Laser diode current switching Ordering Information Part No EL6259CU Temp. Range 0C to +70C Package QSOP-24 Outline # MDP0040 January 31, 2000 Complete Product Specifications Elantec Technical Support: North America: 1-888-352-6832 X 311 Asia: +85-45-682-5820 Europe: +44-18-977-6020 (c)2000 Elantec Semiconductor, Inc. EL6270C - Product EL6270C - Product Brief Laser Driver with Ocillator and APC General Disclaimer Specifications contained in this product brief are in effect as of the publication date shown. Elantec Semiconductor, Inc. reserves the right to make changes in the circuitry or specifications contained herein at any time without notice. Elantec Semiconductor, 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 Semiconductor, Inc. products are not authorized for and should not be used within Life Support Systems without the specific written consent of Elantec Semiconductor, 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 Semiconductor, Inc. Products in Life Support Systems are requested to contact Elantec Semiconductor, Inc. factory headquarters to establish suitable terms & conditions for these applications. Elantec Semiconductor, Inc.'s warranty is limited to replacement of defective components and does not cover injury to persons or property or other consequential damages. January 31, 2000 Elantec Semiconductor, Inc. 675 Trade Zone Blvd. Milpitas, CA 95035 Telephone: (408) 945-1323 (888) 352-6832 (toll free) Fax: (408) 945-9305 European Office: 44-18-977-6020 Japan Office: 85-45-682-5820 2 Printed in U.S.A. |
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