Preliminary Datasheet - Infineon Technologies

Fiber Optics DECEMBER 2000

5 V V23806-S84-Z5

3.3 V V23806-S84-Z6

Test Board for ATM, ESCON, Fibre Channe l

and Gigabit Ethern et

1x9 and 2x9 Transcei vers

Preliminary

FEATURES

• Allows separate powering of receiver and transmitter

sections

• Power supply is filtered separately for RX and TX side

• Possible online monitoring of TX and RX current

• TX can be disabled by using an assembled switch

• All inputs and outputs are AC coupled for easy connec-

tion to 50 Ohm environment

• All high sp eed inputs are built with high pe rformance

SMA connectors

• Can be used for either 1x9 or 2x9 pin modules

OVERVIEW

This test board is designed to evaluate optical transceivers for

data rates from 100 MBd to up to 1.25 GBd. The test board can

be used to characterize th e performance of these transceivers.

All AC parame ters (eye pattern, rise and fall times, jitter etc.)

can be measured with this test board.

This user guide shows you the structure of the test board and

how to use it.

STRUCTURE

The test board is built as a 4-layer PCB (printed circuit board)

with internal VCC and VEE planes which build a high perfor-

mance capacitor for filtering the incoming VCC.

The additional filter on top of the PCB will simulate a filter that

might be used by the end user of the transceiver.

All high speed inputs and outputs are created as 50 Ohm traces

on the top of the PCB.

This test board is available for a positive power supply (VCC) in

the range of 4.7 V to 5.4 V (V23806-S84-Z5) or for the range of

3.1 V to 3.6 V (V23806-S84-Z6).

Fiber Optics V23806-S84-Z5/Z6, Test Board for 1x9 and 2x9 Trx

DESCRIPTION

All inputs and outputs are labeled on the board .

To use the test board for a 1x9 module, the module should be

placed in the pin row X2, see Figure 3.

The following tables define the labels and describe each func-

tion in more detail.

Table 1. Connectors

Table 2. Jumpers push button

Label Connec-

tor typ e Name Provided

Level Description

VCC SMA Positive

power

supply

3.1 V to

3.6 V or

4.7 V to

5.4 V

VEE SMA or

Banana

plug

Negative

power

supply

0 V

SD SMA Signal

detect

output

PECL DC coupled out-

puts. To measure,

us e eq uipmen t

with input imped-

ance >1 Mo hm

RXPMON SMA Receiver

input

power

monitor

Analog

output

signal

TXPMON SMA Positive

Transmit-

ter out-

put

power

monitor

Analog

output

signal

RX-DN SM A Re ceiver

data not

output

PECL out-

put Load should be

50 OHM to VEE,

because of AC

coupling

RX-D SMA Receiver

data out-

put

PECL out-

put

RX-CLKN SMA Negative

Clock

output

PECL out-

put

RXCLK SMA Positive

Clock

output

PECL out-

put

TXDIS SMA Trans-

mitter

disable

input

TTL input DC coupled input

to disable the

transmitter. To use

this input correctly

see also descrip-

tion for J3 and J4 in

Table 2.

LASER–

BIAS+ Banana

plug Positive

laser bias

output

monitor

Analog

output

signal

DC coupled out-

puts. To measure,

us e eq uipmen t

with input imped-

ance >1 Mo hm

Differential output

voltage is propor-

tional t o th e laser

bias curre nt.

LASER–

BIAS– Banana

plug Negative

laser bias

output

monitor

Analog

output

signal

TX-D SMA Transmit-

ter data

input

PECL in-

put AC co upled input

with a 50 Ohm load

to VEE at the

module

TX-DN SMA Transmit-

ter data

not input

PECL in-

put

BP1 - BP4 Pin

socket Module

cover

pins

These pins are

connected to VEE.

Label Type Description

J1 Short Re ceiver part of the modul e is on.

By connecting an ampere meter between those

pins, the RX current can be monitored.

J1 Open Receiver part of the module is off.

J2 Short Transmitter part of the module is on.

By connecting an ampere meter between those

pins, the TX current can be monitored.

J2 Open Transmi tter part of the module is off.

J3 Short The TXDIS circuit is on. By pushing the push button

the optical output of the laser will switch, either on

or off.

When using this option there should be no external

source con nected on TXDIS or short on J4. Other-

wise the on-board circuit could get damaged.

J3 Open The TXDIS circuit on th e test board is off.

Therefore the pus h button is not wo rking .

J4 Short A 50 Ohm resistor close to the TXDIS input at the

module will be connected to VEE.

This resis to r te rmin a tes an ex ternal de vice wh ich

can be connect ed to the TXDIS input.

It is not recommended to use this option if J3 is

shorted. That could damag e the on board TXDIS

circuit.

J4 Open This option should be used if the on-board TXDIS

function is used (J3 short). It is not recommended

to leave J4 open if an external gene rator is used.

That will result in reflect ions and can cause mal-

functions.

Push

but-

ton

If J3 is shorted and J4 is left open, the transmitter

can be switched off or on depending on the status

of the output signal of the TX. Pushing t he butto n

once changes the status of the TX output si gnal.

Pushing it twice = same TX output status as be-

fore.

Fiber Optics V23806-S84-Z5/Z6, Test Board for 1x9 and 2x9 Trx

T he sc hema tic of the test boa rd (F igu re 1 and Figu re 2) gi ves a bet ter under standi ng of th e functi on of the test boar d. T he tes t board

can be use d for other applications also. That is why not all parts are assembled.

Figure 1. 3.3 V version

Figure 2. 5 V version

R150

Open

Open Open

Open

LASER-BIAS

R150 R150

TXDIS

TX-D

TX-DN

VCC

RX-DN

RX-D

BANANA-SOCKET

TXMON

RXPMON

TXALARM

RX-CLK

RX-CLKN

L1 1uH

L2 1uH

X2 X1

R125

R125 R82

R82

R300

Open

Open Open

Open

LASER-BIAS

R300 R300

TXDIS

TX-D

TX-DN

VCC

RX-DN

RX-D

BANANA-SOCKET

TXMON

RXPMON

TXALARM

RX-CLK

RX-CLKN

L1 1uH

L2 1uH

X2 X1

R187

R187 R68

R68

Fiber Optics V23806-S84-Z5/Z6, Test Board for 1x9 and 2x9 Trx

The assembly drawings (Figure 3 and Figure 4) show the top and the bottom of the test board to locate the position of the

components.

Figure 3. Top layer

Figure 4. Bottom layer

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 an d all warranties, including but not limited to warranties

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 T echnologies

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 system, or to aff ect the saf ety or ef fectiveness of that device

or system. Life 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 • Fiber Optics • Wernerwerkdamm 16 • Berlin D-13623, Germany

Infineon Technologies, Inc. • Fiber Optics • 1730 North First Street • San Jose, CA 95112, USA

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