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Part: EL6238
Category:
Optoelectronics
-> Drivers/Controllers
-> Laser
Description: Dual 4-Channel Driver With Oscillator <<<>>> <<<>>>The EL6238 is a High Performance, Dual Output, Laser Driver For Writeable Super-combo CD - DVD Drive. The Ena Pin Enables The Chip, While The SEL1 Pin Selects The Iout Pin. Various Waveforms CAN be Generated Where The Amplitude is Determined BY The Currents Flowing Into Iinr, IIN2, IIN3, And IIN4. The Timing is Determined BY The Signals at OUTEN2, OUTEN3, And OUTEN4. The Oscillator is Enabled When Oscen is High. The Amplified Iinr Current of The Selected Channel is Enabled When The Ena Pin is High. The Total Output Current is The Sum of The Read Current, The Enabled Write Currents, And The Oscillator Current When Enabled.
Company: Intersil Corporation
Datasheet: Download EL6238 datasheet File size : 427 kB
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Datasheet text preview:
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EL623 8
Da ta Sheet J ul y 25, 2003 F N7 3 5 3
Dual 4 Channel Driver with Oscillator
The EL6238 is a high performance, dual output, laser driver for writeable `super-combo' CD - DVD drive. The ENA pin enables the chip, while the SEL1 pin selects the IOUT pin. Various waveforms can be generated where the amplitude is determined by the currents flowing into IINR, IIN2, IIN3, and IIN4. The timing is determined by the signals at OUTEN2, OUTEN3, and OUTEN4. The oscillator is enabled when OSCEN is high. The amplified IINR current of the selected channel is enabled when the ENA pin is high. The total output current is the sum of the read current, the enabled write currents, and the oscillator current when enabled. Usually a voltage DAC will drive a resistor that is in series with the IINR, IIN2, IIN3 and IIN4 inputs. The resistor allows the user to optimize the current gain for each channel. Output write current pulses are enabled when a low is applied to the OUTEN2, OUTEN3, or OUTEN4 pin. The write current will flow to the selected output. When SEL1 is high IOUT1 is selected. OUTENR enables read and oscillator current. The RF oscillators frequency is determined by RFREQ1 or RFREQ2, and its amplitude by RAMP1 or RAMP2.
Features
· Two channels for CD or DVD · Voltage-controlled output current source requiring one external set resistor per channel · Rise time = 0.8ns · Fall time = 0.8ns · Channel 2 to 250mA max. · Channel 3 to 150mA max. · Channel 4 to 100mA max · On chip oscillator with frequency and amplitude control by use of external resistors to ground · Oscillator frequency to 600MHz · Oscillator amplitude to 100mAP-P · Single +5V supply (±10%) · Chip enables for power savings
Applications
· Super Combo drives
Ordering Information
PART NUMBER TEMP. RANGE EL6238CL 0°C to +70°C PACKAGE 24-Pin LPP PKG. DWG. # MD P 0 0 4 6
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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. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc. All other trademarks mentioned are the property of their respective owners.
EL6238
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
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