EL6119CL Intersil Corporation, EL6119CL Datasheet

EL6119CL

Manufacturer Part Number

EL6119CL

Description

Manufacturer

Intersil Corporation

Datasheets

1.EL6119CL.pdf (2 pages)

2.EL6119CL.pdf (2 pages)

Specifications of EL6119CL

Case

QFN

Date_code

03+

Current page: 1 of 2
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Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a “controlled document”. Current revisions, if any, to these

specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.

Features

Applications

Ordering Information

• Leadless plastic package

• Voltage controlled output current

• Rise time = 0.8ns

• Fall time = 0.8ns

• On chip oscillator with frequency

• Oscillator to 500MHz

• Oscillator to 100mA pk/pk

• Single +5V supply (±10%)

• Disable feature for power-up

• CMOS control signals

• CD + DVD Combo applications

• Writable optical drives

• Laser diode current switching

EL6119CL

source, requiring one external set

resistor per channel

and amplitude control by use of

external resistors to ground

protection and power savings

Part No.

Temp. Range

0°C to +70°C

32-Pin LPP

Package

MDP0046

Outline #

EL6119C - Product Brief

Dual 4-Ch Laser Diode Driver + Oscillator

General Description

The EL6119C is a dual four-channel laser diode current amplifier that

provides controlled current to both a CD and DVD laser diode. Chan-

nels 2, 3, and 4 should be used as the write channels, with switching

speeds of approximately one nanosecond rise/fall time. All four chan-

nels are summed together at the I

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

(virtually ground). The current seen at this pin is then amplified to

become a current source at pin I

Output current pulses are enabled when an ‘L’ signal is applied to the

WEN pin. No output current flows when WEN is ‘H’ and additional

laser diode protection is provided since the WEN input will float high

when open. Complete I

ENABLE pin low, which will override the WEN control pins.

Each laser driver has a separate ENABLE pin to allow total shutdown

of each laser driver when not in use.

An on-chip 500MHz oscillator is provided to allow output current mod-

ulation when in read mode. The oscillator is enabled when the OSCEN

pin is held high. Complete control of amplitude and frequency is set by

two external resistors connected to ground at pins RFREQ and RAMP

(see graphs in this data sheet for further explanation).

Connection Diagram

RFREQB

WENRA

WEN2A

WEN3A

WEN4A

IINRB

IIN3A

IIN4A

IIN2B

OUT

shutoff is also achieved by holding the

OUT

Thermal Pad

OUT

output, allowing the user to create

GND

RAMPA

ENABLEA

OSCENA

VCC

IOUTB

GND

RAMPB

ENABLEB

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