el6224 Intersil Corporation, el6224 Datasheet

el6224

Manufacturer Part Number

el6224

Description

3-channel Laser Diode Driver W/ Oscillator

Manufacturer

Intersil Corporation

Datasheet

1.EL6224.pdf (2 pages)

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3-Channel Laser Diode Driver w/

Oscillator

grounded laser diode. Channels 2 and 3 should be used as

the write channels, with switching speeds of approximately

one nanosecond rise/fall time. All three channels are

summed together at the I

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

current seen at this pin is then amplified to become a current

source at pin I

An on-chip 600MHz 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

in this datasheet 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

ENABLE pin low, which will override all other control pins.

The external resistors allow the user to accurately and

independently set each amplifier transconductance by

applying a voltage to each resistor, without restriction on the

voltage range, thus ensuring broad voltage DAC

compatibility. Alternatively, the I

current DAC or other current source.

Ordering Information

EL6224CU

EL6224CU-T7

EL6224CU-T13 16-Pin QSOP

NUMBER

PART

OUT

shutoff is also achieved by holding the

16-Pin QSOP

PACKAGE

The EL6224 is a high performance

three-channel laser driver that

provides controlled current to a

OUT

output, allowing the user to

FREQ

TAPE & REEL

pin can be biased from a

pin (virtually ground). The

Data Sheet

13”

and R

7”

AMP

PKG. DWG. #

(see graphs

MDP0040

1-888-INTERSIL or 321-724-7143

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

Features

• "Shrink-Small" outline package

• Voltage-controlled output current source requiring one

• Current-controlled output current source

• CH2 to 300mA max

• CH3 to 150mA max

• Rise time = 0.8ns

• Fall time = 0.8ns

• On-chip oscillator with frequency and amplitude control by

• Oscillator to 600MHz

• Oscillator to 100mA

• Single +5V supply (±10%)

• Disable feature for power-up protection and power

Applications

• CD-RW applications

• Writable optical drives

• Laser diode current switching

external set resistor per channel

use of external resistors to ground

savings

All other trademarks mentioned are the property of their respective owners.

June 16, 2004

Get FULL DATASHEET

Intersil (and design) is a registered trademark of Intersil Americas Inc.

PK/PK

EL6224

FN7229

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el6224 Summary of contents

Page 1

... Data Sheet 3-Channel Laser Diode Driver w/ Oscillator The EL6224 is a high performance three-channel laser driver that provides controlled current to a grounded laser diode. Channels 2 and 3 should be used as the write channels, with switching speeds of approximately one nanosecond rise/fall time. All three channels are ...

Page 2

... 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 2 EL6224 ...

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