EL6202 Datasheet, PDF (1/8 Pages) Intersil Corporation – Laser Driver Oscillator

®
Data Sheet
June 11, 2004
EL6202
FN7217.1
Laser Driver Oscillator
The EL6202 consists of a variable
amplitude, push only, oscillator that
also supplies the laser DC current. It is
designed to easily interface to existing ROM controllers,
reducing parts count, and power dissipation.
The reduction of parts count and the small package allows
the oscillator to be placed closer to the laser, thus reducing
EMI. Also, the turn-on and turn-off edges are slew rate
limited to reduce higher harmonics.
The total current drawn from the power supply can be less
than the laser threshold current due to the unique push-only
modulation method. The average current is less than the
peak oscillator current, and can be less than half of the
oscillator current. The power control current supplied from
the main board is reduced to less than 2mA.
One external resistor sets the oscillator frequency. A current
applied to the I_IN terminal determines the amplitude of the
oscillator and laser DC current. If the oscillator amplitude is
set very low, the output and oscillator are disabled. The part
is available in the space-saving SOT23-5 package. It is
specified for operation from 0°C to +70°C.
Pinout
EL6202
(5-PIN SOT-23)
TOP VIEW
1 VDD
2 GND
3 IOUT
RFREQ 5
IIN 4
Features
• Low power dissipation
• Reduced parts count from the conventional solution
• User-selectable frequency from 60MHz to 600MHz
controlled with a single resistor
• User-selectable amplitude from 15mA_PK-PK to
100mA_PK-PK controlled by 0.3mA to 2mA input current
• Auto turn-off threshold
• Soft edges for reduced EMI
• Small SOT23-5 package
Applications
• DVD players
• DVD-ROM drives
• Combo drives
• MO drives
• General purpose laser noise reduction
• Local oscillator capability
Ordering Information
PART NUMBER PACKAGE TAPE & REEL PKG. DWG. #
EL6202CW-T7 5-Pin SOT-23 7” (3K pcs)
MDP0038
EL6202CW-T7A 5-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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