HFBR-7924EWZ Datasheet, PDF (7/17 Pages) AVAGO TECHNOLOGIES LIMITED – Four-Channel Pluggable Parallel Fiber Optic Transceiver Part of the Avago Technologies METRAK family

Transmitter Electrical Characteristics
(Over recommended operating conditions: Tc= 0ºC to +80ºC, Vcc=3.3V + 5%)
Parameter
Differential Input Impedance
FAULT* Assert time
RESET* Assert time
RESET* De-assert time
Transmit Enable (TX_EN) Assert time
Transmit Enable (TX_EN) De-assert time
Transmit Disable (TX_DIS) Assert time
Transmit Disable (TX_DIS) De-assert time
Power-On Initiation Time
Control I/Os
TX _DIS, TX_EN,TX_
FAULT*,TX_RESET*
Input Current High
Input Current Low
Output Voltage Low
Output Voltage High
Symbol
Z_in
T_OFF
T_OFF
T_ON
T_ON
T_OFF
T_OFF
T_ON
| I_IH |
| I_IL |
V_OL
V_OH
Minimum Typical
80
100
21
V_EE
2.4
Maximum Unit
120
W
100
µs
7.5
µs
18
ms
18
ms
7.5
µs
7.5
µs
18
ms
ms
0.5
mA
0.5
mA
0.4
V
V_CC
V
Reference
6, Figure 9
Figure 13
Figure 14
Figure 14
Figure 15
Figure 15
Figure 15
Figure 15
Figure 17
2.0 V < V_IH < V_CC
V_EE < V_IH < 0.8 V
I_OL = 4.0 mA
I_OH = -0.5 mA
Transmitter Optical Characteristics
(Over recommended operating conditions: Tc= 0ºC to +80ºC, Vcc=3.3V + 5%)
Parameter
Output Optical Power
50/125 µm, Fiber NA = 0.2
Extinction Ratio
Center Wavelength
Spectral Width - rms
Rise, Fall Time
Inter-channel Skew
Relative Intensity Noise
Jitter Contribution Deterministic
Total
Symbol
P_OUT
ER
l_C
s
t_r, t_f
RIN
DJ
TJ
Minimum Typical
-8.0
-4.5
6
7.5
830
850
60
50
-127
20
45
Maximum
-2.0
860
0.85
150
100
-121
50
120
Unit
dBm
avg.
dB
nm
nm rms
ps
ps
dB/Hz
ps_p-p
ps_p-p
Reference
7
8
9
10
11
12
Notes:
6. Differential impedance is measured between D_in+ and D_in- over the range 4 MHz to 2 GHz.
7. The specified optical output power, measured at the output of a 2 meter test cable, will be compliant with IEC 60825-1 Amendment 2, Class
1M Accessible Emission Limits, AEL Regulatory Compliance section.
8. Extinction Ratio is defined as the ratio of the average output optical power of the transmitter in the high (“1”) state to the low (“0”) state and
is expressed in decibels (dB) by the relationship 10log(P_high avg/P_low avg). The transmitter is driven with a 550 MBd, 101010 pattern.
9. These are unfiltered 20% - 80% values measured with a 550 MBd 101010 pattern.
10. Inter-channel Skew is defined for the condition of equal amplitude, zero ps skew input signals.
11. Deterministic Jitter (DJ) is defined as the combination of Duty Cycle Distortion (Pulse-Width Distortion) and Data Dependent Jitter. Determin-
istic Jitter is measured at the 50% signal threshold level using a 2500 MBd Pseudo Random Bit Sequence of length 2²³-1 (PRBS-23), or equiva-
lent, test pattern with zero skew between the differential data input signals.
12. Total Jitter (TJ) includes Deterministic Jitter and Random Jitter (RJ). Total Jitter is specified at a BER of 10^-12 for the same 2.5 GBd test pattern
as for DJ and is measured with all channels operating.