Datasheet > UX2222

UX2222

更新时间： 2024-11-24 00:04:31

品牌	Logo	应用领域
其他 - ETC		驱动器
页数	文件大小	规格书
5页	171K
描述
155Mbps to 2Gbps Laser Driver For SFP/SFF SFP 激光驱动器厂商：厦门优迅高速芯片有限公司 www.uxfastic.com

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UX2222 数据手册

UX 2222

155Mbps to 2Gbps Laser Driver

General Description

Features

The UX2222 is a complete CMOS laser driver for

SFP/SFF applications from 155Mbps to 2Gbps.It

is fully compliant with the SFP MSA timing and

the SFF-8472 transmit diagnostic requirements.

The UX2222 consists of an automatic power

control (APC) feedback loop, a reference voltage

generator with temperature compensation and a

safety-logic circuit. The UX2222 provides

complementary output currents. The APC feature

allows an optical transmitter to maintain constant

average optical power by a monitor photodiode,

despite changes in laser threshold current over

temperature and lifetime. Optional temperature

Single +3.3V Power Supply

Automatic Average Power Control (APC)

Modulation Compensation

Fully Compliant with SFP and SFF-8472 MSA

100mA Bias Current

85mA Modulation Current

Rise and Fall Times less than 250ps

Apply to FP、DFB、VCSEL Laser

Pin Configuration

compensation

compensates

Laser

Diode

extinction ratio change with temperature.

External resistors set the require laser current

level. The UX2222 also provides transmit-disable

control (TX_DISABLE), a single-point latched

transmit-failure monitor output (TX_FAULT),

photocurrent monitoring, and bias-current

monitoring to indicate faults.

Figure 1. Pin Configuration QFN 24

Typical Application Circuit

Figure 2. Typical Application Circuit

www.uxfastic.com

2007 Preliminary Datasheet

12 3 4 5

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