Datasheet > EL6250CU

EL6250CU

更新时间： 2024-11-16 22:49:11

品牌	Logo	应用领域
ELANTEC		振荡器驱动器
页数	文件大小	规格书
2页	138K
描述
Split Supply Laser Driver and Oscillator

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EL6250CU 数据手册

EL6250C - Product Brief

Split Supply Laser Driver and Oscillator

Features

General Description

• Split Supply for Blue Laser diode

capability

• High-performance laser diode

driver

• Voltage-controlled output current

source to 150mA per channel,

requiring one external set resistor

per channel

The EL6250C is a split supply, four channel laser diode current ampli-

fier that provides controlled current to a grounded laser diode. Channels

2, 3, and 4 must be used as the write channels, with switching speeds of

approximately two nanoseconds 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 pin I_IN. The current

• Current-controlled output current

source to 150mA per channel

• Rise time = 2.0ns

• Fall time = 2.0ns

• On chip oscillator with frequency

and amplitude control by use of

external resistors to ground

seen at this pin is then amplified to become a current source at pin I_OUT

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

when in the read mode. This is turned on when the EOSC 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).

• Oscillator to 500MHz

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

OE pin. No output current flows when OE is ‘H’, and additional laser

diode protection is provided since the OE input will float high when

open. Complete I_OUTshut-off is also achieved by holding the CE pin

low, which will override the OE control pins. VCC2 should be set to

about 1.5V above the maximum laser voltage, while VCC1 should be set

to +5V to minimize chip dissipation.

• Oscillator to 100mA pk/pk

• Single +5V supply (±10%)

• Disable feature for power-up

protection and power savings

• CMOS control signals

Applications

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 cur-

rent DAC or other current source.

• Writable optical drives

• Laser diode current switching

• General blue laser usage

Ordering Information

Connection Diagram

GND

IINR

GND

IIN2

GND 24

VCC2 23

VCC2 22

IOUT 21

IOUT 20

GND 19

RAMP 18

CE 17

Part No

Temp. Range

Package

Outline #

EL6250CU

0°C to +70°C

QSOP-24

MDP0040

RFREQ

IIN3

IIN4

VCC1

OE2

EOSC 16

VCC2 15

VCC2 14

GND 13

10 OE3

11 OE4

12 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EL6250CU相关器件

型号	品牌	获取价格	描述	数据表
EL6252C	ELANTEC	获取价格	2-Channel laser diode Driver + Oscillator
EL6252CY	ELANTEC	获取价格	2-Channel laser diode Driver + Oscillator
EL6253	ELANTEC	获取价格	3-Channel Laser Diode Driver Oscillator
EL6253C	ELANTEC	获取价格	3-Channel Laser Diode Driver Oscillator
EL6253CU	ELANTEC	获取价格	3-Channel Laser Diode Driver Oscillator
EL6255	ELANTEC	获取价格	4-Channel Laser Diode Driver + Oscillator
EL6255C	ELANTEC	获取价格	4-Channel Laser Diode Driver + Oscillator
EL6255CU	ELANTEC	获取价格	4-Channel Laser Diode Driver + Oscillator
EL6257	ELANTEC	获取价格	4-Channel Laser Diode Driver + Oscillator
EL6257C	ELANTEC	获取价格	4-Channel Laser Diode Driver + Oscillator

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