Datasheet > EL6274CU

EL6274CU

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接口集成电路光电二极管
页数	文件大小	规格书
2页	137K
描述
4-Ch Laser Diode Driver Oscillator

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EL6274CU 数据手册

EL6274C - Product Brief

4-Ch Laser Diode Driver + Oscillator

Features

General Description

• Shrink Small Outline Package

The EL6274C is a four channel laser diode current amplifier that pro-

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

can provide 140mA per channel of DC or pulsed current. Channels 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 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

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

• Voltage-controlled output current

source of 140mA per channel,

requiring one external set resistor

per channel

• Current-controlled output current

source of 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

100X 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 = 100

• Disable feature for power-up

protection and power savings

• TTL/CMOS control signals

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 OUTEN control pins.

Applications

• CD-RW applications

• Writable optical drives

• Laser diode current switching

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_INpin can be biased

from a current DAC or other current source.

Ordering Information

Connection Diagram

Part No

Temp. Range

Package

Outline #

GND 1

IINR

GND 3

IIN2

RFREQ 5

24 GND

23 VCC

EL6274CU

0°C to +70°C

QSOP-24

MDP0040

22 VCC

21 IOUT

20 IOUT

19 GND

18 RAMP

17 ENABLE

16 OSCEN

15 VCC

IIN3

IIN4

OUTENR

OUTEN2

OUTEN3 10

OUTEN4 11

GND 12

14 VCC

13 GND

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EL6274CU相关器件

型号	品牌	获取价格	描述	数据表
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
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

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