Datasheet > S3049A

S3049A

更新时间： 2024-11-11 20:49:27

品牌	Logo	应用领域
罗彻斯特 - ROCHESTER		接口集成电路
页数	文件大小	规格书
20页	155K
描述
Interface Circuit, PQFP32, HEAT SINK, TQFP-32

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技术参数
数据手册

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S3049A 技术参数

生命周期：	Contact Manufacturer	包装说明：	HLFQFP,
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.66	接口集成电路类型：	INTERFACE CIRCUIT
JESD-30 代码：	S-PQFP-G32	长度：	5 mm
功能数量：	1	端子数量：	32
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	HLFQFP
封装形状：	SQUARE	封装形式：	FLATPACK, HEAT SINK/SLUG, LOW PROFILE, FINE PITCH
座面最大高度：	1.6 mm	最大供电电压：	5.25 V
最小供电电压：	4.75 V	标称供电电压：	5 V
表面贴装：	YES	温度等级：	INDUSTRIAL
端子形式：	GULL WING	端子节距：	0.5 mm
端子位置：	QUAD	宽度：	5 mm
Base Number Matches：	1

S3049A 数据手册

DEVICE

SPECIFICATION

2.5 GBPS LASER DRIVER

S3049

2.5 GBPS LASER DRIVER

FEATURES

GENERAL DESCRIPTION

• 2.5 Gbps data rate

The S3049 has three main sections: a reference

generator, a high speed current modulation driver,

and a laser bias block with automatic power control.

• Automatic Laser Power Control

• Laser Bias Enable Input

The reference generator generates a temperature sta-

bilized reference voltage, V_REF, which can be used to

program the bias and the modulation currents.

• Differential PECL Inputs

• Temperature Compensated Reference Voltage

• Laser Fault and Fail indicators

• Selectable on-chip Re-Clocking

• 60 mA Modulation Current, 90 mA Bias Current

• 32 Pin TQFP Package

The high-speed modulation driver can switch up to

60 mA swing through the laser. The CLKSEL pin can

be used to select whether or not to re-clock the input

data.

The laser bias block sets the bias current of the laser

and has an Automatic Power Control (APC) system,

which keeps the current through the laser constant by

monitoring the current through the monitor photo-diode.

APPLICATIONS

• WDM for SONET OC-48

• OC-48 Fiber optic modules

• OC-48 Line termination equipment

The APC loop is also used to detect excessive laser

power and low laser power. These conditions are

flagged on the LSFAULT and LSFAIL output pins

respectively.

Figure 1. Typical Operating Circuit

VCC1

TD+

VCC2

LSFAIL

LSFAULT

TD-

IMODMON

IBIASMON

TDCLK+

TDCLK–

CLKSEL

DISABLE

CDEL

IMOD+

PH DIODE

LASER

IMOD–

IBIAS

VEE

IPD

VEE

July 27, 1999 / Revision C

12 3 4 5 6 7...20

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