EL6208_07 Datasheet, PDF (1/11 Pages) Intersil Corporation – Dual Push-Pull Laser Driver Oscillator

®
Data Sheet
August 10, 2007
EL6208
FN7374.1
Dual Push-Pull Laser Driver Oscillator
The EL6208 is a dual push-pull
oscillator used to reduce laser noise in
twin laser diodes. It uses the standard
interface to existing ROM controllers. The frequency and
amplitude are both set with a separate resistor connected to
ground. The tiny package and harmonic reduction allow the
part to be placed close to a laser with low RF emissions. An
auto turn-off feature allows activates the oscillator only when
the APC current is applied.
If the APC current is reduced such that the average laser
voltage drops to less than 1.1V, the output and oscillator are
disabled, reducing power consumption to a minimum.
The current drawn by the oscillator consists of a small utility
current, plus the peak output amplitude in the positive cycle.
In the negative cycle the oscillator subtracts peak output
amplitude from the laser APC current. The waveform is
filtered to reduce EMI emissions.
The EL6208 operates from a signal +5V supply. Power
consumption is very low. The EL6208 part is available in the
space-saving 6 Ld SOT-23 package and is specified for
operation from 0°C to +70°C.
Ordering Information
PART
NUMBER
PART
MARKING
PACKAGE
PKG.
DWG. #
EL6208CW
7
6 Ld SOT-23 MDP0038
EL6208CW-T7* 7
6 Ld SOT-23 MDP0038
EL6208CW-T7A* 7
6 Ld SOT-23 MDP0038
EL6208CWZ
BPAA
6 Ld SOT-23 MDP0038
(Pb-free)
EL6208CWZ-T7* BPAA
6 Ld SOT-23 MDP0038
(Pb-free)
EL6208CWZ-T7A* BPAA
6 Ld SOT-23 MDP0038
(Pb-free)
*Please refer to TB347 for details on reel specifications.
NOTE: These Intersil Pb-free plastic packaged products employ
special Pb-free material sets; molding compounds/die attach
materials and 100% matte tin plate PLUS ANNEAL - e3 termination
finish, which is RoHS compliant and 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-020.
Features
• Low power dissipation
• User-selectable frequency from 60MHz to 600MHz
controlled with a single resistor
• User-specified amplitude from 10mA_P-P to
100mA_P-P controlled with a single resistor
• Auto turn-off threshold
• Soft edges for reduced EMI
• Small 6 Ld SOT-23 package
• Pb-free available (RoHS compliant)
Applications
• CD-DVD ROM drives
Pinout
EL6208
(6 LD SOT-23)
TOP VIEW
VDD 1
RFREQ 2
RAMP 3
6 ^IOUT2
5 ^GND
4 ^IOUT1
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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