HFBR-5107 Ver la hoja de datos (PDF) - HP => Agilent Technologies

Número de pieza

componentes Descripción

Fabricante

HFBR-5107

100VG-AnyLAN Multimode Fiber Transceivers in Low Cost 1x9 Package Style

HP => Agilent Technologies 

Notes:

1. This is the maximum voltage that can

be applied across the Differential

Transmitter Data Inputs to prevent

damage to the input ESD protection

circuit.

2. The outputs are terminated with 50 Ω

connected to VCC –2 V.

3. The power supply current needed to

operate the transmitter is supplied to

differential ECL circuitry. This

circuitry maintains a nearly constant

current from the power supply.

Constant current operation helps to

prevent unwanted electrical noise from

being generated and conducted or

emitted to neighboring circuitry.

4. This value is measured with the

outputs terminated into 50 Ω

connected to VCC –2 V and an Input

Optical Power Level of –14 dBm

average.

5. The power dissipation value is the

power dissipated in the receiver itself.

Power dissipation is calculated as the

sum of the products of supply voltage

and currents, minus the sum of the

products of the output voltages and

currents.

6. This value is measured with respect to

VCC with the output terminated into

50 Ω connected to VCC –2 V.

7. The output electrical rise and fall times

are measured between 20% and 80%

levels with the output connected to

VCC –2 V through 50 Ω.

8. Random Jitter contributed by the

receiver is specified with a 120 MBd

(60 MHz square-wave) input signal.

The input optical power level is at

maximum "PIN MIN. (W)".

9. These optical power values are

measured with the following

conditions:

• At the Beginning of Life (BOL). The

actual FDDI specification is 1.5 dB

lower power at the End of Life for

the equipment. The definition of

Beginning of Life (BOL) to the End

of Live (EOL) optical power

degradation is assumed to be 1.0 dB

per the industry convention for

1300 nm LEDs. The actual

degradation observed in normal

commercial environments is

considerably less than this amount

with Hewlett-Packard’s 1300 nm

LED products.

• At the end of one meter of noted

fiber with cladding modes removed.

• Over the specified operating voltage

and temperature ranges.

• (12.5 MHz square-wave) input

signal. The average power value can

be converted to a peak power value

by adding 3 dB. Higher output

optical power transmitters are

available upon special request.

10. The same comments of Note 9 apply

except that industry convention for

800 nm LED BOL to EOL aging is 3

dB. This value for Output Optical

Power provides a minimum of 7.5 dB

optical power budget at the EOL,

which provides at least 500 meter link

lengths with margin left over for

overcoming normal passive losses,

such as in-line connectors in the cable

plant. The actual degradation observed

in normal commercial environments is

considerably less than this amount

with Hewlett-Packard 800 nm LED

products.

11. The transmitter provides compliance

with 802.12. An Output Optical Power

level of <–45 dBm average in

response to a logic "0" input. This

specification applies to either

62.5/125 µm or 50/125 µm fiber

cables.

12. This parameter complies with 802.12.

13. The optical rise and fall times are

measured from 10% to 90% when the

transmitter is driven by a 12.5 MHz

square-wave input signal.

14. The optical rise and fall times are

measured from 10% to 90% when the

transmitter is driven by a 12.5 MHz

square-wave input signal.

15. Random Jitter contributed by the

transmitter is specified with a 60 MBd

square-wave input signal.

16. This specification is intended to indi-

cate the performance of the receiver

section of the transceiver when Input

Optical Power signal characteristics

are present per the following

definitions. The Input Optical Power

dynamic range from the minimum

level (with a window time-width) to

the maximum level is the range over

which the receiver is guaranteed to

provide output data with a Bit Error

Ratio (BER) better than or equal

to 10-8.

• At the Beginning of Life (BOL).

• Over the specified operating

temperature and voltage ranges.

• Receiver data window opening time-

width is 2.2 ns or greater and

centered at mid-symbol. This worst

case window opening time-width is

the minimum allowed eye-opening

presented to the PHY input per

802.12. This minimum window

time-width of 2.2 ns is based upon

the worst case 802.12 Active Input

Interface optical conditions peak-to-

peak SJ (1.6 ns) and RJ (0.77 ns)

presented to the receiver.

To test a receiver with the worst

case 802.12 Active Input Jitter

condition requires exacting control

over SJ and RJ jitter components.

This is difficult to implement with

production test equipment. The

receiver can be equivalently tested

to the worst case 802.12 input jitter

conditions and meet the minimum

output data window time-width of

2.2 ns This is accomplished by

using a nearly ideal input optical

signal (No DCD, insignificant DDJ

and RJ) and measuring for a wider

window time-width of 4.0 ns. This is

possible due to the cumulative addi-

tion of jitter components through

their superposition. (SJ is directly

additive and RJ components are rms

additive). Specifically, when a

nearly ideal input optical test signal

is used and the maximum receiver

peak-to-peak jitter contributions of

SJ (X.Xns), and RJ (X.Xns) exist,

the minimum window time-width

becomes 4.4 ns. This wider window

time-width of 4.4 ns guarantees the

802.12 time-width of 2.2 ns under

worst case input jitter conditions to

the Hewlett-Packard receiver.

• Transmitter operating with a 120

MBd (60 MHz square-wave), input

signal to simulate any cross-talk

present between the transmitter and

receiver sections of the transceiver.

16a. All conditions of Note 16 apply except

that the BER requirement is tightened

to 1x10-8 and the minimum window

time-width test condition is adjusted to

5.2 ns to reflect the HFBR-5107 trans-

mitter contributed jitter values per the

specification table.

17. All conditions of Note 16 apply except

that the measurement is made at the

center of the symbol with no window

time-width.

17a. All conditions of Note 17 apply

except that the BER requirement is

tightened to 1x10-8.

18. This value is measured during the

transition from low to high levels of

input optical power.

19. The high_light (Signal Detect) output

shall be asserted within 100 µs after a

step increase of the Input Optical

Power. The step will be from a low

Input Optical Power ≤ –45 dBm, into

the range between greater than Pm

and (Pm + 4 dB). Pm is the relevant

163

Share Link: