1

®

FN7219.1

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

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Copyright © Intersil Americas Inc. 2004. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.

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EL6204

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

Features

• Low power dissipation

• User-selectable frequency from 60MHz to 600MHz

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

1

2

3

6

5

4

IOUT

VDD

GND1

RFREQ

GND2

RAMP

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

Data Sheet

March 1, 2004