HFBR-59L1AL Datasheet, PDF (12/16 Pages) Agilent(Hewlett-Packard) – Agilent HFBR-59L1AL 1.25 GBd Ethernet and 1.0625 GBd Fibre Channel 850 nm SFF Low Voltage (3.3 V) Optical Transceiver

Receiver Optical Characteristics
(T_C = -10 °C to +85 °C, V_CCT, R = 3.3 V ±10%)
Parameter
Symbol
Minimum Typical Maximum Unit Notes
Optical Power
PIN
0
dBm
FC-PI Std
Receiver Sensitivity (Optical
Input Power) 1.25 Gb/s
PRMIN
-17
dBm
Note 1
Min Optical Modulation
OMA
31
Amplitude (Peak-to-Peak)
1.0625 Gb/s
µW
FC-PI Std
Note 2
Stressed Receiver Sensitivity
62.5 µm fiber 1.25 Gb/s
PRMIN
62.5 µm fiber 1.0625 Gb/s
OMA
67
-12.5
dBm
Note 3
µW
50 µm fiber 1.25 Gb/s
PRMIN
50 µm fiber 1.0625 Gb/
OMA
55
-13.5
dBm
Note 4
µW
Return Loss
12
dB
FC-PI Std
Signal Detect - De-Assert
P_D
-31
Signal Detect - Assert
P_A
Signal Detect - Hysteresis
PA - PD
0.5
-17.5
-17.0
2.1
5
dBm
Note 5
dBm
Note 5
dB
Notes:
1. Sensitivity measurements are made at eye center with BER = 1E^-12.
2. An OMA of 31 is approximately equal to an average power of –17 dBm assuming an Extinction Ratio of 9 dB.
3. 1.25 Gb/s Stressed receiver vertical eye closure penalty (ISI) min is 2.2 dB for 50 µm fiber and 2.6 dB for 62.5 µm fiber. Stressed receiver DCD
component min (at TX) is 65 ps.
4. 1.0625 Gb/s Stressed receiver vertical eye closure penalty (ISI) min is 0.96 dB for 50 µm fiber and 2.18 dB for 62.5 µm fiber. Stressed receiver DCD
component min (at TX) is 80 ps.
5. These average power values are specified with an Extinction Ratio of 9 dB. The Signal Detect circuitry responds to OMA (peak-to-peak) power, not
to average power.
6. Please refer to the HFBR-59L1AL characterization report for typical values.
Transceiver Timing Characteristics
(T_C = -10 °C to +85 °C, V_CCT, R = 3.3 V ±10%)
Parameter
Symbol
Minimum
TX Disable Assert Time
t_off
TX Disable Negate Time
t_on
Time to Initialize
t_init
TX Disable to Reset
t_reset
10
SD Assert Time
t_loss_on
SD De-assert Time
t_loss_off
Typical
Maximum
10
1
300
100
100
Unit Notes
µs
1
ms
2
ms
3
µs
4
µs
5
µs
6
Notes:
1. Time from rising edge of TX Disable to when the optical output falls below 10% of nominal.
2. Time from falling edge of TX Disable to when the modulated optical output rises above 90% of nominal.
3. From power on or negation of TX Fault using TX Disable.
4. Time TX Disable must be held high to reset TX Fault.
5. Time from optical signal loss to SD assert. See transceiver timing diagrams.
6. Time from optical signal recovery to SD deassert. See transceiver timing diagrams.
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