EL6258C

更新时间： 2024-11-29 22:49:11

品牌	Logo	应用领域
ELANTEC		振荡器驱动器放大器 PC
页数	文件大小	规格书
2页	139K
描述
3-Channel Laser Driver + Oscillator + APC Amplifier

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EL6258C 数据手册

EL6258C - Product Brief

3-Channel Laser Driver + Oscillator + APC Amplifier

Features

General Description

• High-performance laser diode

driver

• Voltage-controlled output current

source requiring one external set

resistor per channel

• Current-controlled output current

source

• Rise time = 1.0ns

• Fall time = 1.1ns

The EL6258C is a high-performance three channel laser diode current

amplifier that provides controlled current to a grounded laser diode.

Channels 2 and 3 must be used as the write channels, with switching

speeds of approximately one nanosecond rise/fall time. All three chan-

nels are summed together at the I_OUToutput, allowing the user to

create multilevel waveforms. Each level of output current is set by an

analog voltage applied to an external resistor which converts the volt-

age into a current at the I_INpins (virtually ground). The current seen at

these pins is then amplified by 100X (150X on CH3) to become a cur-

rent source at pin I_OUT

• On chip oscillator with frequency

and amplitude control by use of

external resistors to ground

An on-chip 500MHz 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 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 500MHz

• Oscillator to 100mA pk/pk

• Single +5V supply (±10%)

• Current amplification = 100

• Disable feature for power-up

protection and power savings

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

OUTEN pins. 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 the OUTEN con-

trol pins.

• TTL/CMOS control signals

• Fast settling APC amplifier

Applications

• DVD drives

• CD-RW applications

• Writable optical drives

• Laser diode current switching

The EL6258C also includes a fast settling APC amplifier designed to

interface directly with the power monitor photodiode and the sample-

and-hold amplifier, for read and write power control.

Connection Diagram

GND 1

IINR 2

24 GND

23 VCC

Ordering Information

Part No

Temp. Range

Package

Outline #

EL6258CU

0°C to +70°C

QSOP-24

MDP0040

IIN2

22 VCC

GND 4

21 IOUT

20 IOUT

19 GND

18 RAMP

17 ENABLE

16 OSCEN

15 VCC

RFREQ 5

IIN3

OUTENR 7

OUTEN2

OUTEN3

GND 10

VREF 11

VOUT 12

14 GND

13 PDIN

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.

中文翻译

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与EL6258C相关器件

型号	品牌	获取价格	描述	数据表
EL6258CU	ELANTEC	获取价格	3-Channel Laser Driver + Oscillator + APC Amplifier
E-L6258E	STMICROELECTRONICS	获取价格	PWM控制的大电流DMOS通用电机驱动器
E-L6258EA	STMICROELECTRONICS	获取价格	PWM controlled high current DMOS universal motor driver
E-L6258EP	STMICROELECTRONICS	获取价格	PWM CONTROLLED - HIGH CURRENT DMOS UNIVERSAL MOTOR DRIVER
E-L6258EX	STMICROELECTRONICS	获取价格	PWM controlled high current DMOS universal motor driver
E-L6258EXTR	STMICROELECTRONICS	获取价格	PWM controlled high current DMOS universal motor driver
EL6259	ELANTEC	获取价格	Low Noise 4-Channel Laser Diode Driver + Oscillator
EL6259C	ELANTEC	获取价格	Low Noise 4-Channel Laser Diode Driver + Oscillator
EL6259CU	ELANTEC	获取价格	Laser Driver with Ocillator and APC
EL6261C	ELANTEC	获取价格	Quad 20MHz Quad, 80MHz, Switched Gain Pre-Amp

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