2417K4A (NetLight) - Agere Systems, Inc.

NetLight

® 24 17K4A 1300 nm Laser

2.5 Gbi t s/s Transceiver

Data Sheet, Rev. 1

August 2001

Available in a small form-fac t or, RJ-45 size, plastic package,

the 2417K4A Transceive r is a high-perfo rmance, cost-effec-

tive, optical transceiver for SONET ap plications.

Features

■SONET SR OC-48, SDH I-16 applications

■High-spee d, op tical data in terface for shelf-t o-shel f

interconnect

■Small form factor, RJ-45 size, 10-pin package

■LC duplex receptacle

■Uncooled 1300 nm laser transmitter wi th automatic

output power control

■Transmitter disable input

■Wide dynamic range receiver with InGaAs PIN

photodetector

■TTL signal-detect output

■Low power dis sipation

■Single 3.3 V power supply

■LVPECL/CML compatible data inputs and CML

compatible data outputs

■Operating temperature range: 0 °C to

70 °C

■Agere Systems Inc. Reliability and Qualification

Program for built-in quality and reliability

Description

The 2417K4A transceiver is a high-speed, cost-effec-

tive optical transceiver intended for 2.488 Gbits/s

shelf-to-shelf opt ical interconnect applications as well

as SONET SR OC-48 and SDH I-16. The tran sceiv er

features proven Agere Systems optics and is pack-

aged in a narrow-width plastic housing with an LC

duplex receptacle. The receptacle fits into an RJ-45

fo rm factor outline. The 10-pin package pinout con-

fo rms to a multisource transceiver agreement.

The transmi tter f eatures the abilit y to interf ace to both

LVPECL and CML differential logic level data inputs.

It also features a TTL logic level disable input. The

receiver features differential CML logic level outputs

and a TTL logic level signal-detect output.

NetLight

2417K4A 1300 nm Laser Data Sheet, Rev. 1

2.5 Gbits/s Transceiver Au gust 2001

2Agere Systems Inc.

Abso lute Maximum Ratings

Stresses in excess of the absolute maximum ratings can cause per manent damage to the device. These are abso-

lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess

of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended

periods can adversely affect device reliability.

Pin Information

Figure 1. 2417K4A Transceiver, 10-Pin Configuration, Top View

Parameter Symbol Min Max Unit

Supply Voltage VCC 05V

Operating Case Te mperature Range TC070°C

Storage Temperature Range Tstg –40 85 °C

Lead Soldering Temperature/Time — — 250/10 °C/s

Operating Wavelength Range λ1.1 1.6 µm

Table 1. Transceiver Pin Descriptions

Number Symbol Name/Description Logic

Family

Receiver

MS MS Mounting Studs. The mounting studs are provided for transceiver

mechanical attachme nt to the circuit board. The y ma y also provide an

optional connection of the transceiver to the equipment chassis

ground.

EER Receiver Signal Ground. NA

CCR Receiver Power Supply. NA

3SD

Signal Detect.

Normal operation: logic one output.

Fault condition: logic zero output.

LVTTL

4RD–

Received DATA Out. CML

5RD+

Received DATA Out. CML

Transmitter

CCT Transmitter Power Supply. NA

EET Transmitter Signal Ground. NA

DIS Transmitter Disable. LVTTL

9TD+

Transmitter DATA In. An internal 50 Ω ter mination is provided, con-

sisting of a 100 Ω resistor between the TD+ and TD– pins. LVPECL

or CML

10 TD– Transmitter DATA In. See TD+ pin for terminations. LVPECL

or CML

12345

109876

1-967

Agere Systems Inc. 3

Data Sheet, Rev. 1

NetLight

2417K4A 1300 nm Laser

August 2001 2.5 Gbits/s Transceiver

Electrostatic Discharge

Caution: This device is susceptible to damage as

a result of electrostatic discharge (ESD).

Take proper precautions during both

handling and testing. Fo llow

EIA

® Stan-

dard

EIA

-625.

Although protection circuitry is designed into the

device, take proper precautions to avoid exposure to

ESD.

Agere Systems employs a human-body model (HBM)

fo r ESD susceptibility testing and protection-design

evaluation. ESD voltage thresholds are dependent on

the critical parameters used to define the model. A

standard HBM (resistance = 1.5 kΩ, capacitance =

100 pF) is widely used and, therefore, can be used for

comparison purposes. The HBM ESD threshold

established for the 2417K4A transceiver is ±1000 V.

Application Information

The 2417 receiver section is a highly sensitive fiber-

optic receiver. Although the data outputs are digital

logic levels (CML), the device should be thought of as

an analog component. When laying out system appli-

cation boards, the 2417 transceiver should receive the

same type of consideration one would give to a sensi-

tive analog component.

Printed-Wiring Board Layout Consider-

ations

A fiber-optic receiver employs a very high gain, wide-

bandwidth transimpedance amplifier. This amplifier

detects and amplifi es signals that are only tens of nA in

amplitud e whe n the r ecei ver is operating near its sensi-

tivity limit. Any unwanted signal currents that couple

into the receiver circuitry cause a decrease in the

receiver's sensitivity and can also degrade the perfor-

mance of the receiver's signal detect (SD) circuit. To

minimize the coupling of unwanted noise into the

receiver, careful attention must be given to the printed-

wiring board.

At a minimum, a double-sided printed-wiring board

(PWB) with a large component-side ground plane

beneath the transceiver must be used. In applications

that include many other high-speed devices, a multi-

layer PWB is highly recommended. This permits the

placement of power and ground on separate layers,

which allows them to be isolated from the signal lines.

Multilayer construction also permits the routing of sen-

sitive signal traces away from high-level, high-speed

signal lines. To minimize the possibility of coupling

noise into the receiver section, high-level, high-speed

signals such as transmitter inputs and clock lines

should be routed as far away as possible from the

receiver pins.

Noise that couples into the receiver through the power

supply pins can also degrade performance. It is

recommended that a pi filter, shown in Figure 3, be

used for both the transmitter and receiver power

supplies.

Data and Signal Detect Outputs

Due to the high switching speeds of CML outputs,

transmission line design must be used to interconnect

components. To ensure optimum signal fidelity, both

data outputs (RD+/RD–) should be terminated identi-

cally. The signal lines connecting the data outputs to

the next device should be equal in length and have

matched impedances . Control le d impedance stripline

or microstrip construction must be used to preserve the

quality of the signal into the next component and to

minimiz e ref lections bac k int o the receiver, which could

degrade its performance. Excessive ringing due to

reflections caused by improperly terminated signal

lines makes it difficult for the component receiving

these signals to decipher the proper logic levels and

can cause transitions to occur where none were

intended. Also, by minimizing high-frequency ringing,

possible EMI problems can be avoided.

The signal-de tect output is p ositiv e LVTTL logic. A lo gic

low at this output indicates that the optical signal into

the receiver has been interrupted or that the light level

has fa llen below the minimum signal-detect threshold.

This output should not be used as an error rate indica-

tor, since its switching threshold is determined only by

the magnitude of the incoming optical signal.

Figure 2. Dat a Input/Output Logic Level Definitions

DATA

SING LE ENDED

VOH

VOL

DATA

VOH

VOL

DIFFERENTIAL

NetLight

2417K4A 1300 nm Laser Data Sheet, Rev. 1

2.5 Gbits/s Transceiver Au gust 2001

4Agere Systems Inc.

Application Information (continued)

Transceiver Processing

When the process plug is placed in the transceiver's optical port, the transceiver and plug can withstand normal

wave soldering and aqueous spray cleaning processes. However, the transceiver is not hermetic, and should not

be subjected to immersion in cleaning solvents. The transceiver case should not be exposed to temperatures in

e xcess of 125 °C. The transceiver pins can be wave soldered at 250 °C for up to 10 seconds. The process plug

should only be used once. After rem ovi ng the process plug fr om the transcei v er, it must not be used agai n as a pro-

cess plug; however, if it has not been contaminated, it can be reused as a dust cover.

Transceiver Optical and Electrical Characteristics

* 50 ¾ load, measured single ended. Differential operation is necessary for optimum performance. (See Figure 2 for visual representation.)

† TTL compatible interface.

* 2

23 – 1 PRBS with a BER of 1 x 10–10.

† 50 ¾ load, measured single ended. Differential operation is necessary for optimum performance.(See Figure 2 for visual representation.)

‡ TTL compa tible int erface .

Table 2. Transmitter Optical and Electrical Characteristics (TC = 0 °C to 70 °C; V CC = 3.135 V—3.465 V)

Parameter Symbol Min Max Unit

Average Optical Output Power (EOL) PO–10.0 –3.0 dBm

Optical Wavelength λC1266 1360 nm

Spectral Width ∆λRMS —4nm

Dynamic Extinction Ratio EXT 8.2 — dB

Output Optical Eye Compliant with SONET GR-253-CORE and

ITU-T G.957 Eye Mask Requirements

Power Supply Current ICCT —190mA

Input Data Voltage:

Single Ended*

Differential* VINp-p

VINp-p 150

300 800

1600 mVp-p

mVp-p

Transmit Disable Voltage†VDVCC – 0.9 VCC V

Transmit Enable Voltage†VEN VEE VEE + 0.8 V

Table 3. Receiver Optical and Electrical Characteristics (TC = 0 °C to 70 °C; VCC = 3.135 V—3.465 V)

Parameter Symbol Min Max Unit

Average Sensitivity:*

800 mV (CML) Differential Input To Transmitter PI— –18 dBm

Max imum Input Power* PMAX –3 — dBm

Power Supply Current ICCR — 110 mA

Output Data Voltage:

Single Ended†

Differential†VOUTp-p

VOUTp-p 300

600 500

1000 mVp-p

mVp-p

Signal-detect Switching Threshold:

Assert

Deassert LSTD

LSTI–45

—–19

–18.5 dBm

dBm

Signal-detect Hysteresis HYS 0.5 6 dB

Signal-detect Voltage:‡

Low

High VOL

VOH 0.0

2.4 0.8

VCC V

Signal-detect Response Time SDRT — 100 µs

Data Sheet, Rev. 1

NetLight

2417K4A 1300 nm Laser

August 2001 2.5 Gbits/s Transceiver

Agere Systems Inc. 5

Qualification and Reliability

To help ensure high product r eli abi lit y an d customer sati sfaction, Agere Systems is co mmitted to an intensive qual-

ity program that starts in the design phase and proceeds through the manufactur ing process. Optoelectronic mod-

ules are qualified to Agere Systems internal standards as well as other appropriate industry standards using MIL-

STD-883 test methods and procedures and using sampling techniques consistent with

Telcordia Technologies

requirements.

In addition, the design, development, and manufacturing facilities of Agere Systems Optoelectronics unit are certi-

fied to be in full compliance with the latest

ISO

®-9001 quality system standards.

Electrical Schematic

* Ferrite beads can be used as an option.

† For all capacitors, MLC caps are reco mmended

Figure 3. Power Supply Filtering of SFF Transceiver

L1 = L2 = 1 µH—4. 7 µH*

C1 = C2 = 10 nF †

C3 = 4.7 µF—10 µF

C4 = C5 = 4.7 µF—10 µF

TRANSMITTER

DRIVER

RECEIVER

POST-

AMPLIFIER

TD–

TD+

100 Ω R

VEET 7

PREAMP

RD+

RD–

VEER

VCCT

VCCR

SFF TRANSCEIVER

2C4 C5

C2 C3 C1

VCC

1-968(F).a

NetLight

2417K4A 1300 nm Laser Data Sheet, Rev. 1

2.5 Gbits/s Transceiver Au gust 2001

6Agere Systems Inc.

Electrical Data Interface—Current Mode Logic (CML)

Figure 4. 3.3 V Transceiver Interface with 3.3 V ICs and CML

TD+

100 ΩCML

VCC (+3.3 V) VCC (+3.3 V)

(A) TRANSMITTER INTERFACE—dc COUPLED—(CML)

RD+

RD–

CML

VCC (+3.3 V) VCC (+3.3 V)

(B) RECEIVER INTERFACE—dc COUPLED—(CML)

Z = 50 Ω

TD–

1-1033(F).c

Data Sheet, Rev. 1

NetLight

2417K4A 1300 nm Laser

August 2001 2.5 Gbits/s Transceiver

Agere Systems Inc. 7

Alternate Electrical Data Interface Options

Figure 5. 3.3 V Transceiver Interface with 3.3 V ICs

TD+

100 ΩLVPECL

130 Ω

VCC (+3.3 V) VCC (+3.3 V)

(A) TRANSMITTER INTERFACE—ac OR dc COUPLED—(LVPECL)

RD+

RD– CML

VCC (+3.3 V) VCC (+3.3 V)

(B) RECEIVER INTERFACE—ac COUPLED—(CML)

Z = 50 Ω

TD–

0.1 µF*

0.1 µF

* OPTIONAL ac CO UPLI NG CAPACITORS; USE CERAMIC X7R

OR EQUIVALEN T

1-1033(F).b

NetLight

2417K4A 1300 nm Laser Data Sheet, Rev. 1

2.5 Gbits/s Transceiver Au gust 2001

8Agere Systems Inc.

Outline Diagrams

Package Outline

Dimensions are in inches and (millimeters).

0.160 (4.06)

1.914

0.535 MAX

0.38 6 MAX

0.700 0.734

0.280

0.014

0.07 0 (1 . 78 )

(13.59)

(48.62)

(0.36)

(9.80)

(7.11) (17.78) (18.64)

0.018

(0.46) 0.150

0.246

(3.81)

(10.16)

0.400

(6.25)

1-1032(F).d

Data Sheet, Rev. 1

NetLight

2417K4A 1300 nm Laser

August 2001 2.5 Gbits/s Transceiver

Agere Systems Inc. 9

Outline Diagrams (continued)

Printed-W iring Board Layout *, †

Dimensions are in inches and (millimeters).

* The hatched areas are keep-out areas reserved for housing standoffs. No metal t r aces of gr ound connection in keep-out area.

† Twenty-pin module shown; 10-pin module requires only 16 PWB holes.

6.00

3.00

3.08

(0.121)

2.00 (0.79)

(0.236)

(0.118)

(2x) ∅ 2.29 MAX

(0.090)

(2x) ∅ 2.2 9 MAX

(0.090)

(2x) ∅ 1.4 ± 0.1 NOTE 1

(0.055 ± 0.004)

AREA FOR EYELETS

2.01

(0.79)

9.59

(0.378) 10.16

(0.400)

13.34

(0.525)

7.59

(0.299)

3.00

(0.118)

(4x) ∅ 1.4 ± 0.1 NOTE 2

(0.055 ± 0.004)

∅ 0.00 M A

4.57

(0.180)

7.11

(0.280)

8.89

(0.350)

(9x) 1.78

(0.070) 16.00 REF

(0.630)

3.56

(0.140)

(2x) ∅ 0.81 ± 0. 1

(0.032 ± 0.004)

∅ 0.00 M A

1. HOLES FOR MOUNTING STUDS MUST BE TIED TO CHASSIS GROUND.

2. HOLES FOR HOUSING LEADS MUST BE TIED TO SIGNAL GROUND.

NOTES:

1-1271(F)

NetLight

2417K4A 1300 nm Laser Data Sheet, Rev. 1

2.5 Gbits/s Transceiver Au gust 2001

10 Agere Systems Inc.

Outline Diagrams (continued)

Recommended Panel Opening

Dimensions are in inches and (millimeters).

1-1088(F).d

0.560

(14.22)

0.400

(10.16)

0.039 TO 0.098

(1.00 TO 2.49 )

0.590 TO 0.620

(14.99 TO 15 . 75)

Data Sheet, Rev. 1

NetLight

2417K4A 1300 nm Laser

August 2001 2.5 Gbits/s Transceiver

Agere Systems Inc. 11

Laser Sa fety Information

Class I Laser Product

FDA/CDRH Class I laser product. All versions of the transceiver are Class I laser products per CDRH, 21 CFR

1040 Laser Safety requirements. All versions are Class I laser products per

IEC

® 60825-1:1993. The transceiver

has been cer tified with the FDA under accession number 9520668.

CAUTION: Use of controls, adjustments, and procedures other than those specified herein may result in

hazardous laser radiation exposure.

This product complies with 21 CFR 1040.10 and 1040.11.

Wavelength = 1.3 µm

Maximum power = 1.0 mW

Because of size constraints, laser safety labeling is not affixed to the module but is attached to the outside of the

shipping carton.

Product is not shipped with power supply.

NOTICE

Unterminated optical connectors may emit laser radiation.

Do not view with optical instruments.

NetLight

2417K4A 1300 nm Laser Data Sheet, Rev. 1

2.5 Gbits/s Transceiver Au gust 2001

Agere Systems Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application.

NetLight

is a re gi stered t rademark of A gere Sys tems In c.

August 2001

DS00-107OPTO-1 (Replaces DS00-107OPTO)

For addition al inf orm at ion, cont ac t your Agere Systems Account Manager or the following:

INTERNET: http://www.agere.com

E-MAIL: docmaster@agere.com

N. AMERICA: Agere Systems Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18109-3286

1-800-372-2447, FA X 610-7 12-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106)

ASIA: Agere Systems Hong Kong Ltd., Suites 3201 & 3210-12, 32/F, Tower 2, The Gateway, Harbou r City, Kowloon

Tel. (852) 3129-20 00, FAX (852) 3129-202 0

CHINA: (86) 21-5047-1212 (S hanghai), (86) 10-6522-5566 (Beijing), (86) 755-695-7224 (Shenzhen)

JAPAN: (81) 3-5421-1600 (Tokyo), KOREA: (82) 2-767 -1850 (Seoul), SINGAPORE: (65) 778-8833, TAIWAN: (886) 2-2725-5858 (Taipei)

EUROPE: Tel . (44) 700 0 6246 24, FAX (44) 1344 488 045

Ordering Information

EIA

is a registered trademark of The Electron ic In dustries Association.

Telcordia Technologies

is a registered trademark of Telcordia Technologies, Inc.

ISO

is a registered trademark of The International Organization for Standardization.

IEC

is a registered trademark of The International Electrotechnica l Commission.

Description Device Code Comcode

2.5 Gbits/s 2 x 5 SFF LC Transceiver 2417K4A 108685 587