Datasheet > 驱动程序和接口 > 其他接口集成电路> EL6276CU

EL6276CU

更新时间： 2024-11-17 23:14:47

品牌	Logo	应用领域
ELANTEC		振荡器驱动器驱动程序和接口二极管激光二极管接口集成电路光电二极管局域网
页数	文件大小	规格书
2页	137K
描述
4-Ch Laser Diode Driver Oscillator

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EL6276CU 技术参数

生命周期：	Transferred	包装说明：	QSOP-24
Reach Compliance Code：	unknown	风险等级：	5.68
Is Samacsys：	N	接口集成电路类型：	INTERFACE CIRCUIT
JESD-30 代码：	R-PDSO-G24	功能数量：	1
端子数量：	24	最高工作温度：	70 °C
最低工作温度：		封装主体材料：	PLASTIC/EPOXY
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
认证状态：	Not Qualified	最大供电电压：	5.5 V
最小供电电压：	4.5 V	标称供电电压：	5 V
表面贴装：	YES	温度等级：	COMMERCIAL
端子形式：	GULL WING	端子位置：	DUAL
Base Number Matches：	1

EL6276CU 数据手册

EL6276C - Product Brief

4-Ch Laser Diode Driver + Oscillator

Features

General Description

• “Shrink-Small” Outline Package

The EL6276C 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 140mA per channel of DC or pulsed current. Chan-

nels 2, 3, and 4 must 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

• 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 100X to become a current source at pin I_OUT

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

tion 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 exter-

nal 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 = 100X

• 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 all other 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 #

EL6276CU

0°C to +70°C

QSOP-24

MDP0040

GND

IINR

GND

IIN2

GND 24

VCC 23

VCC 22

IOUT 21

IOUT 20

GND 19

RAMP 18

RFREQ

IIN3

IIN4

OUTENR ENABLE 17

OUTEN2 OSCEN 16

10 OUTEN3

11 OUTEN4

12 GND

VCC 15

VCC 14

GND 13

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EL6276CU相关器件

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