EL6204 Datasheet, PDF (1/10 Pages) Intersil Corporation – Laser Driver Oscillator

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Data Sheet
March 1, 2004
EL6204
FN7219.1
Laser Driver Oscillator
The EL6204 is a push-pull oscillator
used to reduce laser noise. It uses the
standard interface to existing ROM
controllers. The frequency and amplitude are each 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 it
to easily be used on combo CD-RW plus DVD-ROM pick-
ups.
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 EL6204 part is available in the space-saving 6-pin SOT-
23 package and is specified for operation from 0°C to +70°C.
Pinout
EL6204
(6-PIN SOT-23)
TOP VIEW
1 IOUT
2 VDD
3 GND1
RFREQ 6
GND2 5
RAMP 4
Features
• Low power dissipation
• User-selectable frequency from 60MHz to 600MHz
controlled with a single resistor
• User-specified amplitude from 10mA_PK-PK to
100mA_PK-PK controlled with a single resistor
• Auto turn-off threshold
• Soft edges for reduced EMI
• Small 6-pin SOT-23 package
Applications
• DVD players
• DVD-ROM drives
• CD-RW drives
• MO drives
• General purpose laser noise reduction
• Local oscillators
Ordering Information
PART NUMBER PACKAGE TAPE & REEL PKG. DWG. #
EL6204CW-T7 6-Pin SOT-23 7” (3K pcs) MDP0038
EL6204CW-T7A 6-Pin SOT-23 7” (250 pcs) MDP0038
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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