EL6259C

更新时间： 2024-11-29 22:49:11

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	45K
描述
Low Noise 4-Channel Laser Diode Driver + Oscillator

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中文翻译

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EL6259C 数据手册

EL6259C - Product Brief

Low Noise 4-Channel Laser Diode Driver + Oscillator

Features

General Description

• Low output noise = 4.0nA/rt-Hz

• High-performance laser diode

driver

The EL6259C is a low noise four channel laser diode current amplifier

that provides controlled current to a grounded laser diode. The four

amplifiers can provide up to 150 mA per channel of DC or pulsed cur-

rent. Channels 2, 3, and 4 must be used as the write channels, with

switching speeds of approximately one 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

performance. The level of the output current is set by an analog volt-

age applied to an external resistor which converts the voltage into a

current at the I_INpin. The current seen at this pin is then amplified by

• Pin compatible with EL6257

• Voltage-controlled output current

source to 150 mA per channel,

requiring one external set resistor

per channel

• Current-controlled output current

source to 150 mA per channel

• Rise time = 1.0 ns

• Fall time = 1.1 ns

• On chip oscillator with frequency

and amplitude control by use of

external resistors to ground

• Oscillator to 500 MHz

• Oscillator to 100 mA pk/pk

• Single +5V supply (±10%)

100X to become a current source at pin I_OUT.

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

tion 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).

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.

• Disable feature for power-up

protection and power savings

• TTL/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 current DAC or other current source.

• DVD-RAM high speed drives

• CD-RW applications

• Writable optical drives

• Laser diode current switching

Ordering Information

Part No

Temp. Range

Package

Outline #

Connection Diagram

EL6259CU

0°C to +70°C

QSOP-24

MDP0040

GND

INR

GND

IN2

OUT

RFREQ

GND

RAMP

IN3

IN4

OER

OE2

OE3

OE4

GND

EOSC

Complete Product Specifications

Elantec Technical Support:

GND

North America: 1-888-352-6832 X 311

Asia: +85-45-682-5820

Europe: +44-18-977-6020

中文翻译

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与EL6259C相关器件

型号	品牌	获取价格	描述	数据表
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
EL6261CU	ELANTEC	获取价格	Quad 20MHz Quad, 80MHz, Switched Gain Pre-Amp
EL6262C	ELANTEC	获取价格	Quad 20MHz & Quad, 70MHz, Switched Gain Pre-Amp
EL6262CU	ELANTEC	获取价格	Quad 20MHz & Quad, 70MHz, Switched Gain Pre-Amp
EL6263C	ELANTEC	获取价格	Quad 20MHz & Quad 70MHz, Switched Gain Pre-Amp
EL6263CU	ELANTEC	获取价格	Quad 20MHz & Quad 70MHz, Switched Gain Pre-Amp
EL6265C	ELANTEC	获取价格	13 Channel, 60MHz, Switched Gain Pre-Amp
EL6270C	ELANTEC	获取价格	Laser Driver with Ocillator and APC
EL6270CS	ELANTEC	获取价格	Interface Circuit, PDSO8, SOIC-8

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