EL6273C

更新时间： 2024-11-17 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放大器 PC
页数	文件大小	规格书
2页	139K
描述
3-Channel Laser Diode Driver w/Oscillator & APC Amplifier

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EL6273C 数据手册

EL6273C - Product Brief

3-Channel Laser Diode Driver w/Oscillator & APC Amplifier

Features

General Description

• “Shrink-Small” Outline Package

The EL6273C is a high-performance three channel laser driver that

provides controlled current to a grounded laser diode. Three amplifiers

can provide up to 140mA per channel of DC or pulsed current. Chan-

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

speeds of approximately three nanoseconds rise/fall time. All three

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

• Voltage-controlled output current

source to 140mA per channel,

requiring one external set resistor

per channel

• Current-controlled output current

source to 140mA per channel

• Rise time = 3.0ns

• Fall time = 3.5ns

• On chip oscillator with frequency

and amplitude control by use of

external resistors to ground

amplified by 400X to become a current source at pin I_OUT

An on-chip 500MHz 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 RFREQ and RAMP

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

• Oscillator to 500MHz

• Oscillator to 100mA pk/pk

• Single +5V supply (±10%)

• Current amplification = 400X

• Disable feature for power-up

protection and power savings

• TTL/CMOS control signals

• Fast Settling APC Amplifier

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_OUTshut-off is also achieved by

holding the ENABLE pin low, which will override all other control

pins.

Applications

• CD-RW applications

• Writable optical drives

• Laser diode current switching

The EL6273C also includes a fast settling APC amplifier designed to

interface directly with the front end monitor diode and the sample-

and-hold amplifier for read and write power control. It’s 40MHz band-

width and 150 ns settling time enable up to 8X CD-RW design.

Ordering Information

Part No

Temp. Range

Package

Outline #

Connection Diagram

EL6273CU

0°C to +70°C

QSOP-16

MDP0040

VOUT

VREF

IINR

PDIN 16

VCC 15

IOUT 14

RFREQ

IIN2

GND 13

RAMP 12

ENABLE 11

OSCEN 10

IIN3

OUTEN2

OUTEN3

VCC

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.

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与EL6273C相关器件

型号	品牌	获取价格	描述	数据表
EL6273CU	ELANTEC	获取价格	3-Channel Laser Diode Driver w/Oscillator & APC Amplifier
EL6273DCU	RENESAS	获取价格	EL6273DCU
EL6274C	ELANTEC	获取价格	4-Ch Laser Diode Driver Oscillator
EL6274CU	ELANTEC	获取价格	4-Ch Laser Diode Driver Oscillator
EL6275C	ELANTEC	获取价格	4-Channel Laser Diode Driver Oscillator
EL6275CU	ELANTEC	获取价格	4-Channel Laser Diode Driver Oscillator
EL6276C	ELANTEC	获取价格	4-Ch Laser Diode Driver Oscillator
EL6276CU	ELANTEC	获取价格	4-Ch Laser Diode Driver Oscillator
EL6277C	ELANTEC	获取价格	3-Channel Laser Diode Driver Oscillator
EL6277CU	ELANTEC	获取价格	3-Channel Laser Diode Driver Oscillator

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