Datasheet > EL6277C

EL6277C

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
页数	文件大小	规格书
2页	43K
描述
3-Channel Laser Diode Driver Oscillator

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中文翻译

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EL6277C 数据手册

EL6277C - Product Brief

3-Channel Laser Diode Driver + Oscillator

Features

General Description

• Ultra-Small Package Outline

• High-performance laser diode

driver

The EL6277C is a high-performance three channel laser diode current

driver that provides controlled current to a grounded laser diode.

Channel R and 2 can provide 100mA per channel of DC or pulsed cur-

rent, while channel 3 can provide 200mA per channel. Channels 2, and

3 must be used as the write channels, with switching speeds of approx-

imately three nanosecond rise/fall time. All three channels are

summed together at the I_OUToutput, allowing the user to create multi-

level 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_INpin

(near ground). The current seen at this pin is then amplified by 100X

• Current-controlled output current

source, 100 mA channel R and 2,

200mA channel 3, requiring one

external set resistor per channel

• Rise time = 3.0 ns

• Fall time = 3.5ns

• On chip oscillator with frequency

and amplitude control by use of

external resistors to ground

to become a current source at pin I_OUT

• Oscillator to 500 MHz

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

tion when in the read mode. This is turned on when the OSCEN pin is

held high (floating not recommended). 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). The oscillator will also turn off whenever either of the

OUTEN pins for channels 2 or 3(the write channels) are low (see truth

table).

• Oscillator to 100 mA pk/pk

• Single +5V supply (±10%)

• Current amplification = 100

• Disable feature for power-up

protection and power savings

• TTL/CMOS control signals

Application

Output current pulses are enabled when a ‘Low’ 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_OUTshut-off is also achieved by

holding the ENABLE pin low, which will override the OUTEN con-

trol pins.

• CD-RW applications

• Writable optical drives

• Laser diode current switching

Ordering Information

The external resistors allow the user to accurately and independently

set each amplifier trans conductance by applying a voltage to each

resistor, without restriction on the voltage range. Alternatively, the I_IN

pin can be biased from a current DAC or other current source.

Part No

Temp. Range

Package

Outline #

EL6277CU

0°C to +70°C

QSOP-16

MDP0041

Connection Diagram

INR

IN2

GND

OUT

RFREQ

GND

RAMP

ENABLE

OSCEN

IN3

OUTENR

OUTEN2

OUTEN3

中文翻译

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与EL6277C相关器件

型号	品牌	获取价格	描述	数据表
EL6277CU	ELANTEC	获取价格	3-Channel Laser Diode Driver Oscillator
EL6279C	ELANTEC	获取价格	4-Ch Laser Diode Driver Oscillator
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

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