V23826-K305-C353 - Siemens Semiconductors

Semiconductor Group

FEATURES

• Compliant with Gigabit Ethernet standard

• Meets mezzanine standard height of 9.8 mm

• Compact integrated transceiver unit with

– VCSEL laser diode transmitter

– Integrated receiver

– Duplex SC receptacle

• Class 1 FDA and IEC laser safety compliant

• Single power supply (5 V or 3.3 V)

• Signal detect indicator TTL or PECL

• AC coupled differential inputs and outputs

• Process plug included

• Wave solderable and washable with process plug

inserted

• For distances of up to 550 m (dependent on fiber

type)

Absolute Maximum Ratings

Exceeding any one of these values may destroy the device

immediately.

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

Supply Voltage (VCC–VEE) 5 V ....................................................... 6 V

3.3 V .................................................... 4 V

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

Differential Data Input Voltage .......................................................... 3 V

Operating Case Temperature ............................................ 0° C to 70 ° C

Storage Ambient Temperature ....................................... –40 °C to 85°C

Soldering Conditions, Temp/Time

(MIL-STD 883C, Method 2003) ........................................ 250°C/5.5s

DESCRIPTION

Siemens Gigabit Ethernet multimode transceiver is based on the

Physical Medium Depend (PMD) sublayer and baseband medium, type

1000BASE-SX (short wavelength).

The appropriate fiber optic cable is 62.5 µm or 50 µm multimode fiber

with duplex SC connector.

The Siemens Gigabit Ethernet multimode transceiver is a single unit

comprised of a transmitter, a receiver, and an SC receptacle. This design

frees the customer from many alignment and PC board layout concerns.

The module is designed for low cost LAN, WAN, and Gigabit Ethernet

applications. It can be used as the network end device interface in main-

frames, workstations, servers, and storage devices, and in a broad range

of network devices such as bridges, routers, intelligent hubs, and local

and wide area switches.

(1 ±0.1)

.04 ±.039 (0.35 ±0.1)

.014 ±.004

4.675

.184

Optical

Centerline

PC board

(9.8 max)

.386 max

(3.3 ±0.2)

.13 ±.008

(2) .080

12.7

.500

(0.63 ±0.2)

.025 ±.008

(25.25 ±0.05)

.994 ±.002

20.32

.800

123456789

(38.6 ±0.15)

1.52 ±.006

(11 max)

.433 max

(1.4 -0.05)

.055 -.002

●●●●●●●●●

View Z

(Lead cross section

and standoff size)

(2.8 max)

.110 max 20.32

.800

20.32

.800

9x (0.8 ±0.1)

.032 ±.004

(1.9 ±0.1)

.075 ±.004

(2.54)

.10 0

(0.6 ±0.1)

.024 ±.004

(8.6 max)

.170 max

(3.8 max)

.150 max

(0.5) typ.

.020 typ.

Top view

Footprint

(0.25) typ.

.010 typ.

(2.54)

.10 0

Cutout

2.05

.807

2.5

.984

(15.88 ±0.5)

.625 ±.020

Dimensions in (mm) inches

5 V V23826-K305-C53/73

3.3 V V23826-K305-C353/373

AC/AC Coupled Multimode 850 nm 1.3 Gigabit Ethernet

1x9 Transceiver with Signal Detect TTL or PECL

Preliminary

JUNE 1998

V23826-K305-C53/73-C353/373, AC/AC Multimode 850nm 1.3 Gigabit Ethernet 1x9 Trx

Semiconductor Group

This transceiver operates at 1.3 Gbits per second from a single

power supply (+5 V or +3.3 V). The full differential data inputs

and outputs are PECL compatible.

Functional Description of 1x9 Pin Row 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 RDnot) which are AC coupled

with a biasing build into the transceiver. The Signal Detect (SD,

active high) shows whether an optical signal is present.

The transmitter converts PECL compatible electrical serial data

(TD and TDnot) into optical serial data. Data lines are AC coupled

with differential 100 Ω termination.

The transmitter 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 output

power of the laser over temperature and aging. The power con-

trol uses the output of the monitor PIN diode (mechanically built

into the laser coupling unit) as a controlling signal, to prevent the

laser power from exceeding the operating limits.

Single fault condition is ensured by means of an integrated auto-

matic shutdown circuit that disables the laser when it detects

transmitter failures. A reset is only possible by turning the power

off, and then on again.

The transceiver contains a supervisory circuit to control the

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

ver the supply voltage drops below the reset threshold. It keeps

the reset signal active for at least 140 milliseconds after the

voltage has risen above the reset threshold. During this time the

laser is inactive.

Automatic

Shut-Down

Laser

Driver

Power

Control

Receiver

o/e

Laser

e/o

RX Coupling Unit

Laser Coupling Unit

Multimode Fiber

LEN

Monitor

TECHNICAL DATA

The electro-optical characteristics described in the follow-

ing tables are valid only for use under the recommended

operating conditions.

Recommended Operating Conditions

Notes

1. For VCC–VEE (min., max.). 50% duty cycle. The supply current does

not include the load drive current of the receiver output. Add max.

45 mA for the three outputs. Load is 50 Ω to VCC–2 V.

2. Data inputs are AC coupled with 100 Ω differential termination built

into the transceiver.

Transmitter Electro-Optical Characteristics

Notes

1. Into multimode fiber, 62.5 µm or 50 µm diameter.

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

ched on if power supply is above VTH after tRES.

Parameter Symbol Min. Typ. Max. Units

Case Temperature TC070°C

Power Supply

Voltage

C53/C73 VCC–

VEE

4.75 5.0 5.25 V

C353/C373 3.1 3.3 3.5

Supply

Current(1)

C53/C73 ICC Tbd Tbd mA

C353/C373 Tbd Tbd

Transmitter

Data Input Diff. Voltage(2) VDIFF 300 900 mV

Receiver

Input Center Wavelength λC770 860 nm

Transmitter Symbol Min. Typ. Max. Units

Launched Power

(Average)(1) PO–10 –4 dBm

Center Wavelength λC830 850 860 nm

Spectral Width (RMS) σλ0.85

Relative Intensity Noise RIN –117 dB/Hz

Extinction Ratio (Dynamic) ER 9 dB

Reset Threshold(2) VTH 2.9 V

Reset Time Out(2) tRES 140 240 560 ms

Rise/Fall Time, 20%–80% tR, tF0.26 ns

Coupled Power Ratio CPR 9dB

V23826-K305-C53/73-C353/373, AC/AC Multimode 850nm 1.3 Gigabit Ethernet 1x9 Trx

Semiconductor Group

the +3.3 V/+5 V at the power source. The case temperature of

the module must be in the temperature range given in the

recommended operating limits. These limits guarantee the

laser safety.

Usage Restrictions

The optical ports of the modules shall be terminated with an

optical connector or with a dust plug.

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 law, recertification of the modified product with the U.S. Food

and Drug Administration (ref. 21 CFR 1040.10 (i)).

Laser Data

Required Labels

Laser Emission

Pin Description 1x9 Pin Row

Wavelength 850 nm

Total output power (as defined by IEC: 50 mm

aperture at 10 cm distance)

<400 µW

Total output power (as defined by FDA: 7 mm

aperture at 20 cm distance)

<70 µW

Beam divergence 12°

Pin Name Level Pin # Description

RxVEE Rx Ground Power

Supply

1 Negative power sup-

ply, normally ground

RD Rx Output

Data

PECL Output

AC coupled

2 Receiver output data

RDn Rx Output

Data

PECL Output

AC coupled

3 Inverted receiver

output data

SD RX Signal

Detect

Output

active high

4 A high level on this out-

put shows that there is

an optical signal

RxVCC Rx

3.3 V/5 V

Power

Supply

5 Positive power supply,

3.3 V/5 V

TxVCC Tx

3.3 V/5 V

Power

Supply

6 Positive power supply,

3.3 V/5 V

TDn Tx Input

Data

PECL Input

AC coupled

7 Inverted transmitter

input data

TD Tx Input

Data

PECL Input

AC coupled

8 Transmitter input data

TxVEE Tx Ground Power

Supply

9 Negative power sup-

ply, normally ground

Case Ground Mech.

Support

S1/2 Support stud (floating)

Class 1 Laser Product

IEC

Complies with 21 CFR

1040.10 and 1040.11

FDA

Indication of laser

aperture and beam

Receiver Electro-Optical Characteristics

Notes

1. Minimum average optical power at which the BER is less than

1 x 10E–12. Measured with a 27–1 NRZ PRBS and ER=9 dB.

2. An increase in optical power above the specified level will cause the

SIGNAL DETECT output to switch from a Low state to a High state.

3. A decrease in optical power below the specified level will cause the

SIGNAL DETECT to change from a High state to a Low state.

4. TTL compatible, IOH = -0.4 mA, measured under DC conditions.

5. PECL compatible, when VCC-VEE = 5 V RLOAD = 510 Ω to VEE,

when VCC-VEE = 3.3 V RLOA D = 270 Ω to VEE

6. Load is either 50 Ω to GND at each output or 100 Ω diff.

LASER SAFETY

This multimode Gigabit Ethernet transceiver is a Class 1 laser

product. It complies with IEC 825-1 and FDA 21 CFR 1040.10 and

1040.11. The transceiver must be operated under recommended

operating conditions.

Caution

The use of optical instruments with this product will

increase eye hazard!

General Restrictions

Classification is valid only if the module is operated within the

specified temperature and voltage limits. The system using the

module must provide power supply protection that guarantees

that the system power source will cease to provide power if the

maximum recommended operation limit or more is detected on

Receiver Symbol Min. Typ. Max. Units

Sensitivity

(Average Power)(1)

PIN –19 –17 dBm

Saturation

(Average Power)

PSAT 0

Signal Detect

Assert Level(2)

PSDA –24 –20

Signal Detect

Deassert Level(3)

PSDD –30 –27

Signal Detect

Hysteresis

PSDA–

PSDD

3dB

Signal Detect Assert Time tASS Tbd µs

Signal Detect

Deassert Time

tDAS

Output Low

Voltage(4)

K305-C53 VSDL 0.5 V

K305-C353

Output High

Voltage(4)

K305-C53 VSDH 2.4

K305-C353 2.2

Output Low

Voltage(5)

K305-C73 VSDL -1.95 -1.62

K305-C373

Output High

Voltage(5)

K305-C73 VSDH -1.1 -0.86

K305-C373

Data Output Diff. Voltage(6) VDIFF 0.5 1.0

Output Data Rise/Fall

Time, 20%–80%

, t

375 ps

Return Loss

of Receiver

ARL 12 dB

Siemens Microelectronics, Inc. • Optoelectronics Division • 19000 Homestead Road • Cupertino, CA 95014 USA

Siemens Semiconductor Group • Fiber Optics • Wernerwerkdamm 16 • Berlin D-13623, Germany

Siemens K.K. • Fiber Optics • Takanawa Park Tower • 20-14, Higashi-Gotanda, 3-chome, Shinagawa-ku • Tokyo 141, Japan

www.smi.siemens.com/opto.html (USA) • www.siemens.de/Semiconductor/products/37/376.htm (Germany)

Regulatory Compliance

Feature Standard Comments

Electrostatic Discharge (ESD)

to the Electrical Pins

MIL-STD 883C

Method 3015.4

Class 1 (>1000 V)

Immunity:

Electrostatic Discharge (ESD) to the Duplex

SC Receptacle

EN 61000-4-2

IEC 1000-4-2

Discharges of ±15kV with an air discharge probe on the

receptacle cause no damage.

Immunity:

Radio Frequency

Electromagnetic Field

EN 61000-4-3

IEC 1000-4-3

With a field strength of 10 V/m rms, noise frequency ranges

from 10 MHz to 1 GHz. No effect on transceiver performance

between the specification limits.

Emission:

Electromagnetic Interference (EMI)

FCC Class B

EN 55022 Class B

CISPR 22

Noise frequency range: 30 MHz to 1 GHz

APPLICATION NOTE FOR 850 NM GIGABIT ETHERNET 1X9 TRANSCEIVER

VCSEL

Driver

Signal

Detect

Limiting

Amplifier

Pre-

Amp

RD–

RD+

TX+

TX–

Serializer/

Deserializer

Gigabit

Transceiver

Chip

ECL/PECL

Driver

Receiver

PLL etc.

SiemensTransceiver

V23826-K305-C53/C353

AC AC Option

SD to upper level

TXGND

TxD

VCCTx

VCCRx

RxD

RxGND

VCC

VCC SerDes

3.3 V/5 V

VCC

3.3 V/5 V

100R

TTL level

C1/2/3= 4.7 µF

L1/2 = 1 µH

R1/2 = Depends on SerDes chip used

R3/4 = Depends on SerDes chip used

R7/8 = Biasing (depends on SerDes chip)

R9 = 1 kΩ to 2 kΩ (K305-C53/C353)

= 510 Ω (K305-C73)

= 270 Ω (K305-C373)

Place R1/2/3/4/7/8 close to SerDes chip

Place R5/6 close to Siemens transceiver

Values of R1/2/3/4 may vary as long as proper 50 Ω termination to

VEE or 100 Ω differential is provided. The power supply filtering is

required for good EMI performance. Use short tracks from the

inductor L1/L2 to the module VCCRX/VCCTX.

The transceiver contains an automatic shutdown circuit. Reset is

only possible if the power is turned off, and then on again.

(VCCTX switched below VTH).

Application Board available on request.