Receiver Optical and Electrical Characteristics
(AFBR-5803Z/5803TZ: T = 0°C to +70°C, V = 3.135 V to 3.5 V or 4.75 V to 5.25 V)
A
CC
(AFBR-5803AZ/AFBR-5803ATZ: T = -10°C to +85°C, V = 3.135 V to 3.5 V or 4.75 V to 5.25 V)
A
CC
Parameter
Symbol
PIN Min. (W)
Min.
Typ.
-33.9
Max.
-31
Unit
dBm avg.
Reference
Note 19
Input Optical Power Minimum at Window Edge
Input Optical Power Minimum at Eye Center
Figure 11
P
IN Min. (C)
-35.2
-31.8
dBm avg.
Note 20
Figure 11
Input Optical Power Maximum
PIN Max.
-14
dBm avg.
nm
Note 19
l
Operating Wavelength
1270
1380
0.4
Duty Cycle Distortion Contributed by the Receiver
Data Dependent Jitter Contributed by the Receiver
Random Jitter Contributed by the Receiver
Signal Detect - Asserted
DCD
DDJ
RJ
ns p-p
ns p-p
ns p-p
dBm avg.
Note 8
Note 9
Note 10
1.0
2.14
-33
PA
PD + 1.5 dB
-45
Note 21, 22
Figure 12
Signal Detect - Deasserted
PD
dBm avg.
Note 23, 24
Figure 12
Signal Detect - Hysteresis
PA - PD
1.5
0
dB
µs
Figure 12
Signal Detect Assert Time (off to on)
AS_Max
2
8
100
350
Note 21, 22
Figure 12
Signal Detect Deassert Time (on to off)
ANS_Max
0
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.
using an IDLE Line State, 125 MBd
• With HALT Line State, (12.5 MHz square-
wave), input signal.
(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.
• At the end of one meter of noted optical
fiber with cladding modes removed.
2. The outputs are terminated with 50 W
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.
connected to V -2 V.
CC
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.
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 Informa-
tion - Transceiver Jitter Section for further
information.
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.
10. Random Jitter contributed by the receiver is
specified with an IDLE Line State,
4. This value is measured with the outputs
terminated into 50 W connected to V - 2 V
125 MBd (62.5 MHz square-wave), input
signal. The input optical power level is at
CC
and an Input Optical Power level of
-14 dBm average.
maximum “P
(W)”. See Application
IN Min.
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.
Information - Transceiver Jitter Section for
furtherinformation.
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
6. This value is measured with respect to V
CC
with the output terminated into 50 W
convention for long wavelength LEDs.
The actual degradation observed in
Agilent’s 1300 nm LED products is
< 1 dB, as specified in this data sheet.
• Over the specified operating voltage and
temperature ranges.
13. The transmitter provides compliance with
the need for Transmit_Disable commands
from the FDDI SMT layer by providing 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.
connected to V - 2 V.
CC
7. The output rise and fall times are measured
between 20% and 80% levels with the
output connected to V -2 V through 50 W.
CC
8. Duty Cycle Distortion contributed by the
receiver is measured at the 50% threshold
14
AGILENT [ AGILENT TECHNOLOGIES, LTD. ]
