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AFBR-5803ATZ

FDDI, 100 Mb/s ATM, and Fast Ethernet Transceivers in Low Cost 1 x 9 Package Style

Avago Technologies 

Receiver Optical and Electrical Characteristics

(AFBR-5803Z/5803TZ: TA = 0°C to +70°C, VCC = 3.135 V to 3.5 V or 4.75 V to 5.25 V)

(AFBR-5803AZ/AFBR-5803ATZ: TA = -10°C to +85°C, VCC = 3.135 V to 3.5 V or 4.75 V to 5.25 V)

Parameter

Symbol Min.

Typ.

Max. Unit

Input Optical Power Minimum

at Window Edge

PIN Min. (W)

-33.9

-31

dBm avg.

Input Optical Power Minimum

at Eye Center

PIN Min. (C)

-35.2

-31.8

dBm avg.

Input Optical Power Maximum

PIN Max.

-14

dBm avg.

Operating Wavelength

l

1270

1380

nm

Duty Cycle Distortion Contributed by the

Receiver

DCD

0.4

ns p-p

Data Dependent Jitter Contributed by the

Receiver

DDJ

1.0

ns p-p

Random Jitter Contributed by the Receiver

RJ

2.14

ns p-p

Signal Detect - Asserted

PA

PD + 1.5

dB

-33

dBm avg.

Reference

Note 19

Figure 11

Note 20

Figure 11

Note 19

Note 8

Note 9

Note 10

Note 21, 22

Figure 12

Signal Detect - Deasserted

Signal Detect - Hysteresis

PD

-45

PA - PD

1.5

dBm avg.

dB

Note 23, 24

Figure 12

Figure 12

Signal Detect Assert Time (off to on)

Signal Detect Deassert Time (on to off )

AS_Max

0

2

100

µs

Note 21, 22

Figure 12

ANS_Max 0

8

350

µs

Note 23, 24

Figure 12

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 W connected to VCC -2 V.

3. The power supply current needed to operate the transmitter is provided to differential ECL circuitry. This circuitry maintains a nearly con­stant

current flow 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 W 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 W connected to VCC - 2 V.

7. The output rise and fall times are measured between 20% and 80% levels with the output connected to VCC -2 V through 50 W.

8. Duty Cycle Distortion contributed by the receiver is measured at the 50% threshold using an IDLE Line State, 125 MBd (62.5 MHz square-wave),

input signal. The input optical power level is -20 dBm average. See Appli­cation Information - Transceiver Jitter Section for further information.

9. Data Dependent Jitter contributed by the receiver is specified with the FDDI DDJ test pattern described in the FDDI PMD Annex A.5. The input

optical power level is -20 dBm average. See Application Informa­tion - Transceiver Jitter Section for further information.

10. Random Jitter contributed by the receiver is specified with an IDLE Line State,125 MBd (62.5 MHz square-wave), input signal. The input optical

power level is at maxi­mum “PIN Min. (W)”. See Applica­tion Information - Transceiver Jitter Section for further information.

11. These optical power values are measured with the following conditions:

• The Beginning of Life (BOL) to the End of Life (EOL) optical power degradation is typically 1.5 dB per the industry con-

vention for long wavelength LEDs. The actual degradation observed in Avago Technologies 1300 nm LED products is

< 1 dB, as specified in this data sheet.

• Over the specified operating voltage and temperature ranges.

• With HALT Line State, (12.5 MHz square-wave), input signal.

• At the end of one meter of noted optical fiber with cladding modes removed.

  The average power value can be converted to a peak power value by adding 3 dB. Higher output optical power transmitters are available on

special request.

12. The Extinction Ratio is a measure of the modulation depth of the optical signal. The data “0” output optical power is compared to the data “1”

peak output optical power and expressed as a percentage. With the transmitter driven by a HALT Line State (12.5 MHz square-wave) signal, the

average optical power is measured. The data “1” peak power is then calculated by adding 3 dB to the measured average optical power. The data

“0” output optical power is found by measuring the optical power when the transmitter is driven by a logic “0” input. The extinc­tion ratio is the

ratio of the optical power at the “0” level compared to the optical power at the “1” level expressed as a percentage or in decibels.

14

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