Datasheet > MAX3850D

MAX3850D

更新时间： 2024-11-13 11:17:23

品牌	Logo	应用领域
美信 - MAXIM		驱动器
页数	文件大小	规格书
14页	898K
描述
2.7Gbps, +3.3V DC-Coupled Laser Driver

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MAX3850D 数据手册

19-2294; Rev 1; 5/03

2.7Gbps, +3.3V DC-Coupled

Laser Driver

General Description

Features

The MAX3850 is a +3.3V DC-coupled laser driver for

SDH/SONET applications up to 2.7Gbps. The device

accepts differential data and clock inputs and provides

bias and modulation currents for driving a laser. If a

clock signal is available, a synchronizing input latch

can be used to reduce jitter. An automatic power-con-

trol (APC) feedback loop is incorporated to maintain a

constant average optical power over temperature and

lifetime. The wide modulation current range of 5mA to

60mA (up to 80mA AC-coupled) and bias current of

1mA to 100mA are easy to program, making this prod-

uct ideal for SDH/SONET applications. The MAX3850

also provides laser current-enable control, two current

monitors that are directly proportional to the laser bias

and modulation currents, and a failure-monitor output to

indicate when the APC loop is unable to maintain the

average optical power. Designed to be DC-coupled to

the laser with a supply voltage of only 3.3V, the

MAX3850 greatly simplifies interface requirements. The

MAX3850 is available in a small 32-pin QFN package

as well as dice.

♦ Single +3.3V Power Supply

♦ 35mA Supply Current

♦ Programmable Bias Current from 1mA to 100mA

♦ Programmable Modulation Current from 5mA to

60mA (Up to 80mA AC-Coupled)

♦ Bias Current and Modulation Current Monitors

♦ 70ps Rise/Fall Time

♦ Automatic Average Power Control with Failure

Monitor

♦ Complies with ANSI, ITU, and Bellcore

SDH/SONET Specifications

♦ Laser Current-Enable Control

Ordering Information

TEMP

RANGE

PIN-

PACKAGE

CODE

PART

MAX3850EGJ

MAX3850E/D

-40°C to +85°C

32 QFN

Dice*

G3255-1

—

Applications

*Dice are designed to operate over this range, but are tested

SDH/SONET Transmission Add/Drop Multiplexers

and guaranteed at T = +25°C only. Contact factory for

Systems

availability.

Digital Cross-Connects

Typical Application Circuits are continued at the end of the

data sheet.

MPLS Transmitter Systems

Section Regenerators

Pin Configuration appears at the end of the data sheet.

Typical Application Circuits

3.3V

0.01µF

16Ω

DATA+

OUT-

OUT+

100Ω

11Ω

MAX3890

DATA-

50Ω

CLOCK+

MAX3850

SERIALIZER

WITH

CLOCK GEN

8.0pF

CLOCK-

BIAS

BIASMON

MODMON

1000pF

0.1µF 0.1µF

392Ω 392Ω

3.3V

TYPICAL APPLICATION CIRCUIT

WITH DC-COUPLED INPUTS

Covered by U.S. Patent numbers 5,802,089 and 5,883,910

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...14

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与MAX3850D相关器件

型号	品牌	获取价格	描述	数据表
MAX3850E	MAXIM	获取价格	2.7Gbps, +3.3V DC-Coupled Laser Driver
MAX3850E/D	MAXIM	获取价格	Interface Circuit, BIPolar, 0.070 X 0.083 INCH, DIE-41
MAX3850EGJ	MAXIM	获取价格	LASER DIODE/LED DRIVER\|BIPOLAR\|LLCC\|32PIN\|CERAMIC
MAX3850EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX3850
MAX385BCPE	MAXIM	获取价格	DPST,
MAX385BEPE	MAXIM	获取价格	DPST,
MAX385BESE	MAXIM	获取价格	DPST,
MAX385C/D	MAXIM	获取价格	Precision, Low-Voltage Analog Switches
MAX385CPE	MAXIM	获取价格	Precision, Low-Voltage Analog Switches
MAX385CSE	MAXIM	获取价格	Precision, Low-Voltage Analog Switches

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