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FN7213
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Copyright Intersil Americas Inc. 2003-2004. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
All other trademarks mentioned are the property of their respective owners.
EL6173
3-Channel Laser Diode Driver w/Oscillator
& APC Amplifier
The EL6173 is a high performance
three-channel laser driver that
provides controlled current to a
grounded laser diode. Write channels 2 and 3 can provide
up to 200mA per channel of DC or pulsed current, with
switching speeds of approximately one nanosecond rise/fall
time. All three channels are summed together at the I
OUT
output, allowing the user to create multilevel waveforms in
order to optimize laser diode performance. The level of the
output current is set by an analog voltage applied to an
external resistor which converts the voltage into a current at
the I
IN
pin (virtually ground). The current seen at this pin is
then amplified to become a current source at pin I
OUT
.
An on-chip 500MHz oscillator is provided to allow output
current modulation when in any mode. This is turned on
when the OSCEN pin is held high. Complete control of
amplitude and frequency is set by two external resistors
connected to ground at pins R
FREQ
and R
AMP
(see graphs
in this data sheet for further explanation.)
Output current pulses are enabled when an `L' signal is
applied to the OUTEN pin. No output current flows when
OUTEN is `H' and additional laser diode protection is
provided since the OUTEN input will float high when open.
Complete I
OUT
shut-off is also achieved by holding the
ENABLE pin low, which will override all other control pins.
The EL6173 also includes a fast-settling APC amplifier
designed to interface directly with the front end monitor
diode and the sample-and-hold amplifier for read and write
power control. Its 100MHz bandwidth and 30ns settling time
enable up to 16X CD-RW design.
Features
"Shrink-Small" outline package
Voltage-controlled output current source to 200mA per
channel, requiring one external set resistor per channel
Current-controlled output current source to 200mA per
channel
Rise time = 0.8ns
Fall time = 0.8ns
On-chip oscillator with frequency and amplitude control by
use of external resistors to ground
Oscillator to 500MHz
Oscillator to 100mA
PK/PK
Single +5V supply (10%)
Disable feature for power-up protection and power savings
Fast-settling APC amplifier
Pb-free Available as an Option
Applications
CD-RW applications
Writable optical drives
Laser diode current switching
Ordering Information
PART
NUMBER
PACKAGE
TAPE & REEL
PKG. DWG. #
EL6173CU
16-Pin QSOP
-
MDP0040
EL6173CU-T7
16-Pin QSOP
7"
MDP0040
EL6173CU-T13
16-Pin QSOP
13"
MDP0040
EL6173CUZ
(See Note)
16-Pin QSOP
(Pb-free)
-
MDP0040
EL6173CUZ-
T7 (See Note)
16-Pin QSOP
(Pb-free)
7"
MDP0040
EL6173CUZ-
T13 (See Note)
16-Pin QSOP
(Pb-free)
13"
MDP0040
NOTE: Intersil Pb-free products employ special Pb-free material
sets; molding compounds/die attach materials and 100% matte tin
plate termination finish, which is compatible with both SnPb and
Pb-free soldering operations. Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed
the Pb-free requirements of IPC/JEDEC J Std-020B.
Data Sheet
June 14, 2004
Get FULL DATASHEET
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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
EL6173
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