EL6279C

更新时间： 2024-11-20 23:14:47

品牌	Logo	应用领域
ELANTEC		振荡器驱动器二极管激光二极管
页数	文件大小	规格书
2页	42K
描述
4-Ch Laser Diode Driver Oscillator

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中文翻译

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EL6279C 数据手册

EL6279C - Product Brief

4-Ch Laser Diode Driver + Oscillator

Features

General Description

• Ultra-Small Package Outline

The EL6279C is a four channel laser diode current amplifier that pro-

vides controlled current to a grounded laser diode. The four amplifiers

can provide up to 100 mA per channel of DC or pulsed current. Chan-

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

speeds of approximately three nanosecond rise/fall time. All four

channels are summed together at the I_OUToutput, allowing the user to

create multilevel waveforms in order to optimize laser diode perfor-

mance. 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_INpin (virtually ground). The current seen at this pin is then

• Current-controlled output current

source to 100 mA per channel,

requiring one external set resistor

per channel

• Auto Oscillator On-Off with

OUTEN Signals

• Rise time = 3.0 ns

• Fall time = 3.5 ns

• On chip oscillator with frequency

and amplitude control by use of

external resistors to ground

amplified by 100X to become a current source at pin I_OUT

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

OUTEN pin. No output current flows when OUTEN is ‘H’, and addi-

tional laser diode protection is provided since the OUTEN input will

float high when open. Complete I_OUTshutoff is also achieved by hold-

ing the ENABLE pin low, which will override the OUTEN control

pins.

• Oscillator to 500 MHz

• Oscillator to 100 mA pk/pk

• Single +5V supply (±10%)

• Current amplification = 100

• Disable feature for power-up

protection and power savings

• CMOS control signals

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

modulation when in read mode. The oscillator is enabled when the

OSCEN pin is held high. If any of channels 2, 3, or 4 are active, the

oscillator is switched off. Complete control of amplitude and fre-

quency is set by two external resistors connected to ground at pins

RFREQ and RAMP (see graphs in this data sheet for further

explanation).

Applications

• CD-RW applications

• Writable optical drives

• Laser diode current switching

The external I_INresistors allow the user to accurately and indepen-

dently 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_INpin can be

biased from a current DAC or other current source.

Ordering Information

Part No.

Temp. Range

Package

Outline #

EL6279CU

0°C to +70°C

QSOP-16

MDP0040

Connection Diagram

IINR

VCC

IIN2

RFREQ

IOUT

GND

IIN3

RAMP

IIN4

OUTEN2

ENABLE

OSCEN

VCC

OUTEN3

OUTEN4

中文翻译

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与EL6279C相关器件

型号	品牌	获取价格	描述	数据表
EL6279CU	ELANTEC	获取价格	4-Ch Laser Diode Driver Oscillator
EL6280C	ELANTEC	获取价格	Dual Laser Driver with APC Amp
EL6280CL	ELANTEC	获取价格	Dual Laser Driver with APC Amp
EL6280CU	ELANTEC	获取价格	Dual Laser Driver with APC Amp
EL6281	ELANTEC	获取价格	4-Channel Laser Driver with APC Amp
EL6281C	ELANTEC	获取价格	4-Channel Laser Driver with APC Amp
EL6281CL	ELANTEC	获取价格	4-Channel Laser Driver with APC Amp
EL6281CU	ELANTEC	获取价格	4-Channel Laser Driver with APC Amp
EL6283C	ELANTEC	获取价格	3-Channel Laser Diode Driver w/Oscillator & APC Amplifier
EL6283CU	ELANTEC	获取价格	3-Channel Laser Diode Driver w/Oscillator & APC Amplifier

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