V23818-K305-B57 - Infineon Technologies

LC™ is a trademark of Lucent

Fiber Optics JANUARY 2002

V23818-K305-B57

Small Form Factor Pluggable SFP

Multimode 850 nm 1.0625 GBd Fibre Channel

1. 25 Gigabit Ethernet Transceiver

with LC™ Connector

Preliminary

FEATURES

• Small Form Factor Pluggable transceiver

• Fully SFP MSA compliant(1)

• Advanced release mechanism

– easy access, even in belly to belly applications

– grip for easy access - no t ool is needed

– color coded release mechanism

MM: black color coding

SM: blue color coding

• Excellent EMI performance

• RJ-45 style LC™ c onnector system

• Single power supply (3.3 V)

• Ext remely low power consumptio n of 415 mW typical

• Small size for high channel density

• UL-94 V-0 certified

• ESD Class 1 per MIL-STD 883D Method 3015.7

• Compli ant with FCC (Class B) and EN 55022

• For distances of up to 700 m (50 µm fiber)

• Class 1 FDA and IEC laser safety compliant

• A C/AC Coupling according to SFP MSA

• Recomme nda tio n: Infi neo n Cage one-piece design

V238 18-S5-N1 for press fit and/or solderable

• Operating case temperature: –10°C to 85°C

Note

1. The S FP MS A can be found at www.I nfineon.com/f iberoptics next t o

the transceiver datasheets.

Absolute Maxi mum Ratings

Exceeding any one of these values may destroy the device

immediately.

Package Power Dissipation................................................ 1.5 W

Data Input Levels (PECL)............................................VCC+0.5 V

Differential Data Input Vo lt age............................................2.4 V

Storage Amb ient Temperat u r e ............................–40°C to 85°C

VCC max.............................................................................. 5.5 V

ECL-Output current data...................................................50 mA

Dimensions in mm [inches]

Fiber Optics V23818-K305-B57, SFP MM 850nm 1.0625GBd Fibre Channel 1.25GBE Trx (LC™)

DESCRIPTION

The Infineon Fibre Channel multimode transceiver – part of

Infineon Small Form Factor transceiver family – i s based on the

Physical Medium Depend (PMD) sublayer and baseband

medium, type 1000 Base-SX (short wavelength)

and Fibre Channel

FC-PI 100-M5-SN-I, 100-M6-SN-I

FC-PH2 100-M5-SN-I, FC-PH2 100-M6-SN-I.

The appropriate fiber optic cable is 62.5 µm or 50 µm multi-

mode fiber with LC™ connector.

Operating range over each optical fiber type

The Infine on Fibre Channel / Gigabit Ethernet multimode trans-

ceiver is a single unit comprised of a transmitter, a receiver, and

an LC™ receptacle.

This transceiver supports the LC™ connectorization concept.

It is compatible with RJ-45 style backpanels for high end

Data Com and Telecom applications while providing the advan-

tages of fiber optic technology.

The module is designed for low cost SAN, LAN, WAN, Fibre

Channel and Gigabit Ethernet applications. It can be used as the

network end device interface i n mainframes, workstations,

servers, and storage devices, and in a broad range of network

devices such as bridges, routers, hubs, and local and wide area

switches.

This transc eiver operates at 1.0 625 GBd / 1.25 GBd from a

single power supply (+3.3 V). The fu ll differential data inputs

and outputs are PECL and LVPECL compatible.

Functional Description of SFP Transceiver

This transceiver is designed to transmit serial data via

multimode cable.

Functional Diagram

The receiver component converts the optical serial data into

PECL compatible electrical data (RD+ and RD–). The LOS of

Signal ( LOS, active low) shows whether an optical signal is

present.

The tran sm itter converts PECL compatible electri cal serial data

(TD+ and TD–) into optical serial dat a. Data lines are differen-

tially 100 Ω terminated.

The transm itter contains a laser driver circuit that drives the

modulation and bias current of the laser diode. The currents are

controlled by a power control circuit to guarantee constant out-

put power of the laser over temperature and aging. The power

control uses the output of the monitor PIN diode (mechanically

built into the l a ser coupling unit) as a controlling signal, to pre-

vent the laser power from exceeding the operating limits.

Single fault condition is ensured by means of an integrated

automatic shutdown circuit that disables the laser when it

detects laser fau lt to guarantee the laser Eye Safety.

The transceiver contains a supervisory circuit to control the

power supply. This circuit makes an internal reset signal when-

ever the supply voltage drop s below the reset threshold. It

keeps the re set signal active for at least 140 milliseconds after

the voltage has ri sen above the reset threshold. During this

time the laser is inactive.

A low signal on TxDis enables transmit ter . If TxDis is high or not

connected the transmitter is d isabled.

The information which kind of S FP module has been plugged

into an SFP port can be read through the MOD-DEF interface.

The information i s stored in an I2C-Eprom inside the SFP Trans-

ceiver.

Fiber type Min. Typ. (meters) Max.

62.5 micron MMF 0.5 2 to 300 400

50.0 micron MMF 0.5 2 to 550 700

Laser

Driver

Power

Control

Receiver

o/e

Laser

e/o

Rx Coupling Unit

TD−

TD+

TxDis

TxFault

RD−

RD+

LOS

Laser

Coupling Unit

Multimode Fiber

LEN

Monitor

Automatic

Shut-Down

EPROM

MOD-DEF

Fiber Optics V23818-K305-B57, SFP MM 850nm 1.0625GBd Fibre Channel 1.25GBE Trx (LC™)

TECHNICAL DATA

The electro-optical character istics describe d in the following

tables are valid only for use under the recommended operatin g

conditions.

Recommended Operating Conditions

Transmitter Electro-Optical Characteristics

Notes

1. Into multimod e fiber, 62.5 µm or 50 µm diameter.

2. Laser power is shut down if power supply is below VTH and

switched on if power supply is above VTH after tRES.

3. Fibre Channel PI Standard.

Recei ver Electro-Optic al Cha racteri s tic s

Notes

1. Aver age optical power at which the BER is 1 x 10E–12. Measured

with a 27–1 NRZ PRBS and ER=9 dB.

2. An increase in optical power abov e t he specified level will cause th e

LOS of Signal output to switch from a High state to a Low state.

3. A decrease in opt ic a l power below the specified level will caus e the

LOS of Signal to change from a Low state to a High state.

4. AC/AC f or data. Load 50 Ω to GND or 100 Ω dif f er ential. F or d ynamic

measurement a tolerance of 50 mV should be added.

5. Supply current excluding Rx output load.

6. Measured at the given Stressed Receiver Eyeclosure Penatly and

DCD component giv en in Fibr e Channel PI Standard (2.03/2.18 dB &

40/80 ps).

7. Measured according to IEEE 802.3

8. Fibre Channel PI Standard.

Parameter Symbol Min. Typ. Max. Units

Case Temperature TC–10 85 °C

Power Supply Voltage VCC–

VEE 3.1 3.3 3.5 V

Transmitter

Data Input

Differe n tial V olta g e VDIFF 250 2400 mV

Receiver

Inpu t C enter

Wavelength λC770 860 nm

Transmitter Symbol Min. Typ. Max. Units

Launched Power

(Average)(1) PO–9.5 –6–4dBm

Optical Modulation Ampli-

tude(3) OMA 156 450 µW

Center Wave le ngt h λC830 850 860 nm

Spectral Width (RMS) σl0.85

Relative Intensity No ise RIN –116 dB/Hz

Extinction Ratio (Dynamic) ER 9 15 dB

Total Tx Jitter TJ 53 130 ps

Reset Thr eshold(2) VTH 2.5 2.75 2.99 V

Reset Time Out(2) tRES 140 240 560 ms

Rise Time, 20%–80% tR260 ps

Supply Current 45 65 mA

Receiver Symbol Min. Typ. Max. Units

Se n s itiv ity

(Averag e P o wer) (1) PIN –19.5 –17 dBm

Saturat i o n

(Averag e P o wer) PSAT 0

Min. Optical Modulation

Amplitude(8) OMA 19 31 µW

Stressed Receiver Sensi-

tivity 50 µm Fiber SPIN

50 µm 24 55 µW(6)

–17 –13.5 dB(7)

Stressed Receiver Sensi-

tivity 62.5 µm Fiber SPIN

62.5 µm 32 67 µW(6)

–16 –12.5 dB(7)

LOS of Signal

Assert Level(2) PLOSA –22 –18 dBm

LOS of Signal

Deassert Level(3) PLOSD –30 –24

LOS of Signal

Hysteresis PLOSA–

PLOSD 0.5 2 dB

LOS of Signal

Assert Time tASS 100 µs

LOS of Signal

Deassert Time tDAS 350

Receiver 3 d B cut off

Frequency(8) 1.25 1.5 GHz

Receiver 10 d B cut off

Frequency(8) 1.5 3

Data Output Diffe rential

Voltage(4) VDIFF 0.5 0.7 1.23 V

Return Loss

of Receiver ARL 12 dB

Supply current(5) 80 90 mA

Fiber Optics V23818-K305-B57, SFP MM 850nm 1.0625GBd Fibre Channel 1.25GBE Trx (LC™)

Timing of Control and Status I/O Pin Description

Parameter Symbol Min. Max. Units Condition

Tx Disable

Assert

Time

t_off 10 µs Ti m e from rising

edge of Tx Disable to

when the optical out-

put fall s bel o w 10%

of no m inal .

Tx Disable

Negate

Time

t_on 1 ms Time from falling

edge of Tx Disable to

when the modulated

optical output rises

above 90% of nom i-

nal.

Time to

initialize,

including

rese t of

Tx_Fault

t_init 300 From power on or

negation of Tx Fault

using Tx Disable.

Tx Fault

Assert

Time

t_fault 100 µs Time from fault to Tx

fault on.

Tx Disable

to reset t_rese t 10 Time Tx Disable

must be held high to

reset Tx_fault.

LOS As-

sert Time t_loss_

on 100 Time from LOS state

to Rx LOS assert.

LOS Deas-

sert Time t_loss_

off 100 Time from non-LOS

state to Rx LOS

deassert.

Serial ID

Clock Rate f_serial_

clock 100 kHz

Pin Name Level/

Logic Pin# Description

VEET Transmitter

Ground N/A 1

Fault Transmitter

Fault

Indication

TTL 2 Logi cal 1 indi cat es that La-

ser Shut-Down is active.

Dis-

able

Transmitter

Disable TTL 3 A low signal sw i tc hes t he

laser on.

A high signal switches the

laser off.

If not connected the Tx is

disabled.

MOD-

DEF2 Module

Definition 2 T TL 4 Mod-Def 2 is the data line

of two wire serial interfa ce

for seri a l ID .

MOD-

DEF1 Module

Definition 1 TTL 5 Mod-Def 1 is the clock line

of two wire serial interfa ce

for seri a l ID .

MOD-

DEF0 Module

Definition 0 N/A 6 Mod-Def 0 is grounded by

the module to indicate that

the module is present.

Rate

Select No t

connected N/A 7

LOS Loss of Signal TTL 8 Normal Operation: Logic

“0” Output, represents

that light is present at re-

cei v er inpu t .

Fault Condition: Logic “1”

Output.

VEERReceiver

Ground N/A 9

VEERReceiver

Ground N/A 10

VEERReceiver

Ground N/A 11

RD–In v. Received

Data Out LV

PECL 12 AC Coupled inside the

Transceiver.

RD+ Received

Data Out LV

PECL 13

VEERReceiver

Ground N/A 14

VCCRReceiver

Power N/A 15

VCCT Transmitter

Power N/A 16

VEET Transmitter

Ground N/A 17

TD+ Transmit

Data In LV

PECL 18 AC Coupled inside the

Transceiver and 100 Ω

differential terminated.

TD–Inv. Tra n sm i t

Data In LV

PECL 19

VEET Transmitter

Ground N/A 20

Fiber Optics V23818-K305-B57, SFP MM 850nm 1.0625GBd Fibre Channel 1.25GBE Trx (LC™)

Regulatory Compliance

EYE SAFETY

This laser based multimode transceiver is a Class 1 product.

It complies with IEC 60825-1 and FDA 21 CFR 1040.10 and

1040.11.

To meet laser saf ety r eq uirements the tr ansceiver shall be oper-

ated within the Absolute Maximum Rati ngs.

Caution

All adjust m ent s have been made a t the factory prior to ship-

ment of the devices. N o m a i n tenanc e or alteratio n to th e

device is required.

Tampering with or modifying the performance of the device

will result in voided product warranty.

Note

Failure to adhere to the above restrictions could result in a modifica-

tion that is considered an act of “manufacturing”, and will require,

under la w, recertific ation of th e modified pr oduct with t he U . S . Food

and Drug Administration (ref. 21 CFR 1040 .10 (i)).

Laser Data

Required Labels

Laser Emission

SFP Transc eiver Electrical Pad Layout

Feature Standard Comments

Compliant with

89/336/EEC EN 550 22

EN 550 24

ESD:

Electrostatic

Discharge to the

Electrical Pins

EIA/JESD22-

A114-A

(MIL-STD 883D

Method 3015.7)

Class 1 ( > 1000 V)

Immunity:

Against Electrostatic

Discharge (ESD)

to the

Duplex LC

Receptacle

EN 6100 0- 4- 2

IEC 61000-4-2 Discharges ranging

from ±2 kV to ±15 kV on

the receptacle cause no

damage to trans ceiver

(under recommended

conditions).

Immunity:

Against Radio Fr e-

quency Elec trom ag-

netic Field

EN 6100 0- 4- 3

IEC 61000-4-3 With a field strength of

3 V/m rms, noise

frequency r anges from

10 MHz to 2 GHz. No

effect on transceiver

performance between

the specification limits.

Emission:

Electromagnetic

Interference (E MI)

FCC 47 CFR

Part 15, Cla ss B

EN 55022 Class B

CISPR 22

Noise freque ncy rang e:

30 MHz to 18 GHz

This devi ce complies

with part 15 o f the FC C

Rules. Operation is sub-

ject to the following two

conditions: 1. This

devi ce m ay not cause

harmful interference.

2. This de vi ce must ac-

cept any interference

received, including in-

terference that may

cause undes ired

operation.

Tested To Comply

With FCC Standards

FOR HOME OR OFFICE USE

SFP V23818-K305-B57

Wavelength 850 nm

Total output power (as defined by IEC: 7 mm

apertur e at 1 .4 cm di st ance) <675 µW

Total output power (as defined by FDA: 7 mm

apertur e at 2 0 cm dist ance) <70 µW

Beam dive rg ence 12°

Class 1 Laser Product

IEC

Complies with 21 CFR

1040.10 and 1040.11

FDA

Indication of

laser aperture

and beam

TD−

TD+

RD+

RD−

TxFault

Tx Disable

MOD-DEF(2)

MOD-DEF(1)

MOD-DEF(0)

Rate Select

LOS

Top of Transceiver Bottom of Transceiver (as viewed

thru Top of Transceiver)

Fiber Optics V23818-K305-B57, SFP MM 850nm 1.0625GBd Fibre Channel 1.25GBE Trx (LC™)

APPLICATION NOTES

EMI-Recommendation

To av oid elec trom agn etic r adi ation ex ce eding the requ ire d lim its

please take note of the following recommendations.

When Gigabit switching components are found on a PCB (multi-

plexers, clock recoveries etc.) any opening of th e chas sis may

produce radiation also at chassis slots other than that of the

device itself . T hus ev ery mechanical opening or aperture should

be as small as pos sible.

On the board itself every data connection should be an imped-

ance matched line (e.g. strip line, coplanar strip line). Data,

Datanot should be routed symmetrically, vi as should be

avoided. A terminating resistor of 100 Ω shou ld be plac ed at the

end of each matched line. An alternative termination can be

provided with a 50 Ω resistor at each (D, Dn). In DC coupled

system s a t he v en in equi v a lent 5 0 Ω resistance can be achiev ed

as follows: For 3.3 V: 125 Ω to VCC and 82 Ω to VEE, for 5 V:

82 Ω to VCC an d 125 Ω to VEE at Data and Datanot. Please con-

sider whether there is an intern al termination inside an IC or a

transceiver.

In certain cases signal GND is the most harmful source of radia-

tion. Connecting chassis GND and signal GND at the plate/

bezel/ chassis rear e.g. by means of a fiber optic transceiver

may result in a large amount of radiation. Even a capacitive cou-

pling between signal GND and chassis may be harmful if it is

too close to an opening or an aperture.

If a separation of signal GND and chassis GND is not possible,

it is strongly recommended to provide a proper contact

between signal GND and chassis GND at every loc ation where

possible. This concept is designed to avoid hotspots. Hotspots

are places of highest radiation which could be generated if only

a few connec tions between signal and chassis GND exist.

Compensation currents would concentrate at these connec-

tions, causing radiat ion.

By us e of Gi ga b it switc h in g component s in a d es ig n, the return

path of the RF curren t must also be considered. Thus a split

GND plane of Tx and Rx portion may result in severe EMI prob-

lems.

The cutout should be sized so that all contact springs make

good contact with the face plate.

For the SFP transceiver a connection of the SFP cage pins to

chassis GND is recomme nded. If no separate chassis GND is

available on the users PCB the pins should be connected to sig-

nal GND. In this case take care of the notes ab ove.

Please consider that the PCB may behave like a waveguide.

With an εr of 4, the wavelength of the harmonics inside the

PCB will be half of that in free space. In this scenario even the

smallest PCBs may have unexpected resonanc es.

The SFP transceiver can be assembled onto the host board

together with all cages and host bo ard connect ors complying

with the SFP multi source agreement.

Infineon Proposes

Cag e: Host board connector:

Infineon Technologies Tyco Electronics

Part Number: V23818-S5-N1 Part Number: 1367073-1

SFP

Host board

connector

Cage

Fiber Optics V23818-K305-B57, SFP MM 850nm 1.0625GBd Fibre Channel 1.25GBE Trx (LC™)

EEPROM Serial ID Memory Contents

The data can be read using the 2-wire serial CMOS E2PROM

protocol of the Atmel AT24C01A or equivalent.

Notes

1. Ad dress 63 is c heck sum of b y tes 0 –63

2. Address 61–83 Vendor Serial Number

3. Date code

4. Address 95 is check sum of bytes 64–94

Address Hex ASCII Address Hex ASCII

003 3220

104 3320

207 3420

300 3520

400 3600

500 3700

601 3803

740 3919

840 4056V

90C 41322

10 01 42 33 3

11 01 43 38 8

12 0D 44 31 1

13 00 45 38 8

14 00 46 2D -

15 00 47 4B K

16 32 48 33 3

17 1E 49 30 0

18 00 50 35 5

19 00 51 2D -

20 49 I 52 42 B

21 6E n 53 35 5

22 66 f 54 37 7

23 69 i 55 20

24 6E n 56 00

25 65 e 57 00

26 6F o 58 00

27 6E n 59 00

28 20 60 00

29 41 A 61 00

30 47 G 62 00

31 20 63(1) FB

Address Hex ASCII Address Hex ASCII

64 00 96 20

65 1A 97 20

66 78 98 20

67 32 99 20

68(2) 100 20

69(2) 101 20

70(2) 102 20

71(2) 103 20

72(2) 104 20

73(2) 105 20

74(2) 106 20

75(2) 107 20

76(2) 108 20

77(2) 109 20

78(2) 110 20

79(2) 111 20

80(2) 112 20

81(2) 113 20

82(2) 114 20

83(2) 115 20

84(3) 116 20

85(3) 117 20

86(3) 118 20

87(3) 119 20

88(3) 120 20

89(3) 121 20

90(3) 122 20

91(3) 123 20

92 00 124 20

93 00 125 20

94 00 126 20

95(4) 127 20

Published by Infineon Technologies AG

Attention please!

The information herein is given to describe certain components and shall not be

considered as warranted characteristics.

Terms of delivery and rights to technical change reserved.

W e hereby disclaim any and all warranties, in cluding but not limited to warra nties

of non-infrin gem ent , regarding circuits, descri ptions and charts stated herein.

Infineon Technologies is an approved CECC manufacturer.

Information

For further information on technology, delivery terms and conditions and prices

please contact the Infineon Technologies offices or our Infineon Technologies

Representatives worldwide - see our webpage at

www.infineon.com/fiberoptics

Warnings

Due to technical requirements components may contain dangerous substances.

F or information on the types in question please contact your Infineon Technologies

offices.

Infineon Technologies Components may only be used in life-support devices or

systems with the express written approval of Infineon Technologies, if a failure of

such components can reasonably be expected to cause the failure of that

life-support device or sy stem, or to aff ect the safety or ef f ectiveness of that device

or system. Lif e support devices or systems are intended to be implanted in the

human body, or to support and/or maintain and sustain and/or protect human life.

If they fail, it is reasonable to assume that the health of the user or other persons

may be endangered.

Infineon Technologies AG • Fib er Op ti cs • Wernerwerkdamm 16 • Berlin D-13623, G ermany

Infineon Technologies, Inc. • Fibe r Opti cs • 1730 North First Street • San Jose, CA 95112, USA

Infineon Technologies K.K. • Fiber Optics • Takanawa Park Tower • 2 0-14, Higashi-Gotanda, 3-chome, Shinagawa-ku • Tokyo 141, Japan

Multimode 850 nm Fibre Channel SFP Transceiver, AC/AC TTL

Recommended Host Board Supply Filtering Network

Example SFP Host Board Schematic

VccT

VccR

SFP Module Host Board

1 uH

0.1 uF

0.1 uF 0.1 uF 10 uF

3.3 V

10 uF

PLD / PAL 4.7k to

10k Ohms

4.7k to

10k Ohms

4.7k to

10k Ohms

3.3 V

Mod_def 0 Mod_def 1 Mod_def 2

30k Ohms

Gnd,

Rx_Rate

Rx_LOS

Preamp &

Quantizer

RD −

.01 uF

RD +

100 Ohms

Vcc, R

.1 uF10 uF

Laser Driver

100 Ohms

.01 uF

−

TD +

Gnd, T

Tx_Fault

Tx_Disable

Vcc, T 4.7k to 10k Ohms

.1 uF

SFP Module

3.3 V

10 uF .1 uF

1 uH

4.7k to 10k

SerDes IC

.7k to 10k Ohms

Protocol Vcc

Tx_Disable

Tx_Fault

Protocol IC

Rx_LOS

Rx_Rate

Infineon

SFP

Transceiver

Ohms