EL6140C
®
®
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Elantec ® is a registered trademark of Elantec Semiconductor, Inc.
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
PRODUCT BRIEF
General Description
The EL614 0C is a c ombinatio n read + 2 write level lase r driver a nd IV
amplifier, with an extra read + oscillator ROM channel for use in dual-
laser ‘combo’ applicat ions. A separate (amplitude and frequency)
oscillator modulates the selected output for laser noise reduction dur-
ing 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 sc ale range of each amplifier to be matched to the full
scale range of the users control DACs. When the write laser is
selected, and th e WEN pin s are switc hed low, the respec tiv e current is
summed to th e ou tp ut wi th 1 n s rise an d fall times. When th e 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 ampli-
tudes and frequ encies 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/µ s, the
I/V amplifier can normall y settle to 1% within 30n s.
C
onnection Diagram
1
2
3
4
16
15
14
13
5
6
7
12
11
9
8
10
20
19
18
17
24
23
22
21
VOUT
VREF
IINR
IIN2
RF1
IIN3
GND
RF2
WEN2
CD
WEN3
NC
PDIN
VDD
VDD
IOUT1
GND
GND
RAMP1
RAMP2
ENABLE
OSCEN
IOUT2
VDD
Features
• Read + 2 write channel laser driver
with oscillator and fast I/V
ampli f ier plus a separate ROM
laser driver with oscillator
• 200V/µs I/V amplifier
• 100X gain, 100mA low noi s e r ead
channel
• 250X gain, 300mA and 150X gain,
150mA write channels
• 500 MHz, 100mAP-P oscillator
• Write rise/fall times = 0.8ns
• Singl e +5 V suppl y
Applications
• Combo CD-RW + DVD-ROM
• CD-RW to 16X
•CD-R to 32X
• Writable opt ical disk drives
Ordering Information
Part No Temp. Range Package Outline #
EL6140CU -40°C to +85°C 24-Pin QSOP MDP0040
EL6140C
Dual Laser Driver with APC Amp
April 18, 2002
Intersil Europe S arl
Avenue William Fraisse 3
1006 Lausanne
Switzerland
TEL: +41- 21- 61 405 60
FAX: +41-21-6140579
EUROPE
2
EL6140C
Dual Laser Driver with APC Amp
EL6140C
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, softwar e an d/ or sp ec if ica ti on s
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 othe rwise unde r any
patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www. intersil. com
April 18, 2002
Printed in U.S.A.
®
Intersil Corporation
7585 Irvi ne Cent er Dri ve
Suite 100
Irvine, CA 92618
TEL: 949-341-7000
FAX: 949-341-7123
NORTH AMERICA Inters il Corp or ati on
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FAX: +852 -27 30-1433
ASIA
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675 Trade Zone Blvd.
Milpitas, C A 95035
TEL: 408-945-1323
800: 888-ELANTEC
FAX: 408-945-9305
Sales Office Headquarters
Effective May 15, 2002, Elantec, a leader in high performance analog products, is now a part of Intersil Corporation.
PRODUCT BRIEF
