LC-2488A4Q1H [ETC]

Telecommunication IC ; 电信IC\n


型号：	LC-2488A4Q1H
厂家：	ETC
描述：	Telecommunication IC 电信IC\n 电信
文件：	总7页 (文件大小：117K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

LC-2488B4H2 Single Mode Laser Small

Form Factor Transceiver for SONET

OC-48 / SDH STM-16

DELTA ELECTRONICS, INC.

FEATURES

• Compliant with SFF Transceiver MSA

Specification

• Compliant with Specifications for SONET OC-48/SDH

STM-16

• RJ-45 style LC^TMconnector system

• 1310 nm Fabry-Perot Laser Source Technology

• Data Link up to 2km in 9/125 Signal Mode Fiber

• Single + 3.3V Power Supply and TTL Logic

Interface

• 2x5 LC SFF small footprint utilized in high density

application

• Laser Class 1 Product which comply with the

requirements of IEC 60825-1 and IEC 60825-2

Product Description

The LC-2488B4H2 from DELTA ELECTRONIC is a hot

pluggable 3.3V Small Form-Factor transceiver module

designed expressly for high-speed bi-directional communi-

cation applications that require rates of up to 2.488 Gbit/sec.

It is compliant with the SONET OC-48 / SDH STM-16

standards, as well as the SFF Multisource Agreement.

The LC-2488B4H2 transceivers provide with the LC

receptacle that is compatible with the industry standard LC

connector. The transceiver is supplied in the industry

standard 2x5 DIP style and is footprint compatible with SFF

Multi Source Agreement(MSA).

ORDERING INFORMATION

LC - 2488 B 4 H 2 X

TEMPERATURE

DATA RATE

BLANK

0~70 deg C

-10~85 deg C

-40~85 deg C

WAVE LENGTH

850 nm

B 1310 nm

C 1550 nm

COUPLING TYPE

DC / DC

AC / AC

SD LEVEL

The transmitter section of LC-2488B4H2 consists of an

1310 nm Fabry-Perot (FP) Laser in an optical subassembly

(OSA) while the receiver consists of a GaAs PIN photo -

diode mounted together with a transimpedance preamplifier.

The post-amplifier of the LC-2488B4H2 also includes a

Signal Detect circuit which provides a TTL logic-high

output when an unusable optical signal level is detected.

The LC-2488B4H2 transceiver is a Class 1 eye safety

product.The optical power levels, under normal operation,

are at eye safe level.

TTL

LINK DISTANCE

Q 10km in 9/125 um SMF

E 200m in 62.5/125 um MMF,

500m in 50/125 um MMF

F 300m in 62.5/125 um MMF,

550m in 50/125 um MMF

2km in 9/125 um SMF

5km in 9/125 um SMF

LC-2488B4H2 Single Mode Laser Small

Form Factor Transceiver for SONET

OC-48 / SDH STM-16

DELTA ELECTRONICS, INC.

Absolute Maximum Ratings

Parameter

Supply voltage

Storage temperature

Lead soldering temperature

Lead soldering time

Symbol

Min.

-0..5

-40

Typ.

Max.

240

Unit

℃

Note

Vcc

T_SOLD

t_SOLD

℃

sec.

Recommended Operating Conditions

Parameter

Ambient Operating

Temperature

Symbol

T_A

Min.

Typ.

Max.

Unit

℃

Supply voltage

Transmitter Differential

Input Voltage

Vcc

3.15

0.4

3.45

1.6

V_D

Data Output Load

R_DL

Electrical Characteristics(T _A=0 degC to 70 degC , V _{C C}=3.15V to 3.45V )

Parameter

S y m b o l

M i n .

Typ.

Max.

U n i t

Note

T R A N S M I T T E R

S u p p l y c u r r e n t

I c c

1 6 0

m A

R E C E I V E R

S u p p l y c u r r e n t

I c c

V _D

1 3 0

1 .2

m A

D a t a o u t p u t d i f f e r e n t i a l

v o l t a g e

0 . 5

0 . 7

O u t p u t D a t a r i s e t i m e

O u t p u t D a t a f a l l t i m e

S i g n a l D e t e c t O u t p u t -H i g h

t _r

t _f

1 5 0

3 . 4 5

p s

R e f 1

V _LH

S i g n a l D e t e c t O u t p u t -L o w

V _LL

0 . 8

Notes:

R e f 1 . T h e s e a r e 2 0 % ~ 8 0 % v a l u e s

LC-2488B4H2 Single Mode Laser Small

Form Factor Transceiver for SONET

OC-48 / SDH STM-16

DELTA ELECTRONICS, INC.

Optical Characteristics

(T =0 degC to 70 degC , V_CC=3.15V to 3.45V )

Parameter

Symbol Min.

Typ.

Max.

Unit

Note

TRANSMITTER

Launched power(avg.)

Optical extinction ratio

Center wavelength

Spectral width(RMS)

Optical risetime

P_O

-10

8.2

-6

-3

dBm

Ref 1

1270

1310

1355

t_r

nm (rms)

100

225

Ref 2

Optical falltime

t_f

RECEIVER

Optical input sensitivity(avg.)

Optical input saturation(avg.)

Optical wavelength

P_IN

-18

dBm

Ref 3

Ref 4

P_SAT

-3

1310

Signal detect- Assert

P_A

P_D

-18

dBm

Signal detect- Deassert

Signal detect- Hysteresis

-30

0.5

P_A-P_D

Notes:

Ref 1. The maximum optical output power complies with class 1 laser eye safety.

Ref 2. These are unfiltered 20-80% values.

Ref 3. The receive sensitivity is measured using a worst case extinction ratio penalty BER better than or

equal to 1x10^-12in the center of the eye opening with 2²³-1 NRZ PRBS

Ref 4. Measured with 2²³-1 NRZ PRBS

LC-2488B4H2 Single Mode Laser Small

Form Factor Transceiver for SONET

OC-48 / SDH STM-16

DELTA ELECTRONICS, INC.

Connection Diagram

T x

Mounting Studs / Soder Posts

Top

View

Receiver Ground

Receiver Power Supply

Signal Detect

Transmitter Input Data Bar

Transmitter Input Data

Transmitter Disable

Receiver Output Data Bar

Receiver Output Data

Transmitter Gound

Transmitter Power Supply

Pin Descriptions

Pin Name

Pin#

Description

Receiver Ground

Directly connect this pin to the receiver ground plane

Provide +3.3V dc via the recommended receiver power supply

filter circuit.

Receiver Power Supply

Receiver Signal Detect TTL output. Active high on this line

indicates a received optical signal

Receiver data inverted differential AC coupled PECL

compatible output

Receiver data non-inverted differential AC coupled PECL

compatible output

Signal Detect

Receiver Output Data Bar

Receiver Output Data

Provide +3.3V dc via the recommended transmitter power

supply filter circuit.

Transmitter Power Spply

Transmitter Gound

Directly connect this pin to the transmitter ground plane

Connect this pin to +3.3V TTL logic high ‘ 1’ to disable module.

To enable module, connect this pin to TTL logic low ‘ 0’ .

Transmitter data inverted differential AC coupled PECL

compatible input

Transmitter Disable

Transmitter Input Data

Transmitter data non-inverted differential AC coupled PECL

compatible input

Transmitter Input Data Bar

LC-2488B4H2 Single Mode Laser Small

Form Factor Transceiver for SONET

OC-48 / SDH STM-16

DELTA ELECTRONICS, INC.

Recommended Circuit Schematic :

VCCSerDes

3.3V

TXDIS

TTL LogicLevel

VCC

TX+

TX-

TXGND

Transmitter

TxD

Laser

ECL/

PECL

100R

Driver

DRIVER

VCCTx

VCCRx

VCC

3.3V

Se r ia lize r /

De s e r ia liz e r

DeltaTransceiver

Receiver

Tr a n s c e ive r

Ch ip

Signaldetect

SD to upper level

RxD

RD-

RD+

Post

Amp

Pre-

Amp

Re c e ive r

P LL e t c .

RxD

RxGND

Input Level (LV-TTL)

TX Function

Low

High

NIC

OFF

Table 1 (Disable Pin Truth Table)

C1/2/3 = 4.7 uF

L1/2

= 1 uH

Value of R5/6/9/10/11/12 may vary as long as proper 50 W termination or 100 W differential

Is Provided.For good EMI performance ,the power supply filter is required.Use short tracks from the inductor

L1/2 to the module VccTx/VccRx.

LC-2488B4H2 Single Mode Laser Small

Form Factor Transceiver for SONET

OC-48 / SDH STM-16

DELTA ELECTRONICS, INC.

SFF Transceiver Package Dimensions

LC-2488B4H2 Single Mode Laser Small

Form Factor Transceiver for SONET

OC-48 / SDH STM-16

DELTA ELECTRONICS, INC.

Regulatory Compliance

Test Item

Reference

Qty’

Evaluation

(#1)

FCC Class B

Electromagnetic Interference

EMI

EN 55022 Class B

CISPR 22

(#2) Immunity

：

EN 61000-4-3

Radio Frequency

Electromagnetic Field

IEC 1000-4-3

EN 61000-4-2

：

(#3) Immunity

Electrostatic Discharge to

the Duplex LC Receptacle

IEC 1000-4-2

IEC 801.2

(1) Satisfied with electrical

characteristics of product

spec.

(#4) Electrostatic Discharge

to the Electrical Pins

(2) No physical damage

MIL-STD-883C

Method 3015.4

EIAJ#1988.3.2B

Version 2,

Machine model

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