6
Table 6 - Transmitter Optical Characteristics
HFBR-5911L (T
C
= 0ºC to +70ºC, V
CC
= 3.14 V to 3.47 V)
HFBR-5911AL (T
C
= -10 °C to +85 °C, V
CC
= 3.14 V to 3.47 V)
Parameter Symbol Minimum Ty p i c a l Maximum Units Reference
Optical Output Power 62.5 µm
Optical Output Power 50 µm
P
OUT
-9.5
-9.5
-1.5
-1.5
dBm avg. 11
Tx_Disable Optical Output Power P
OUT DIS
-30 dBm avg. 11
Optical Extinction Ratio ER 9 dB 12
Center Wavelength l
C
830 850 860 nm
Spectral Width - rms s 0.85 nm rms
Optical Rise Time t
r
0.26 ns 13
Optical Fall Time t
f
0.26 ns 13
RIN
12
-117 dB/Hz
Coupled Power Ratio CPR 9 dB 14
Contributed Total Jitter TJ 227
0.284
ps
UI
15
Parameter Symbol Minimum Typical Maximum Units Reference
Receiver Supply Current I
CC
RX 135 mA
Power Dissipation P
DISS
230 470 mW
Power Supply Noise Rejection PSNR 100 mV
P-P
16
Data Output Differential Voltage V
OH
-V
OL
0.4 1.3 V
Data Output Rise Time t
r
0.4 ns
Data Output Fall Time t
f
0.4 ns
TTL Signal Detect Output Voltage - Low V
OL
0.6 V
TTL Signal Detect Output Voltage - High V
OH
2.2 V
Notes:
11. The maximum Optical Output Power complies with IEEE 802.3 and is Class 1 laser eye safe.
12. Optical Extinction Ratio is defined as the ratio of the average optical power of the transmitter in the high (“1”) state to the low (“0”) state.
The transmitter is driven with a Gigabit Ethernet 1250 MBd 8b/10b encoded serial data pattern. Optical Extinction Ratio is expressed in
decibels (dB) by the relationship 10log(P
high
avg/P
low
avg).
13. Optical Rise and Fall Times are 20-80% value. Laser transmitter pulse characteristics are typically specified by an eye diagram - see Figure
6. The characteristics include rise time, fall time, pulse overshoot, pulse undershoot and ringing, all of which are controlled to prevent
excessive degradation of receiver sensitivity. These parameters are specified by the referenced Gigabit Ethernet eye diagram using the
required filter. The output optical waveform complies with the requirements of the eye mask described in IEEE 802.3 section 38.6.10 and
Figure 38-2.
14. CPR is measured in accordance with EIA/TIA-526-14A as referenced in IEEE 802.3 section 38.6.10.
15. Measured at TP2. TP refers to the compliance point specified by IEEE 802.3, section 38.2.1.
16. Tested with a 100 mV
P-P
sinusoidal signal in the frequency range from 10 Hz to 2 MHz on the V
CC
supply with the recommended power
supply filter (with C8) in place. Typically, a change in sensitivity of less than 1 dB is experienced.
Table 7 - Receiver Electrical Characteristics
HFBR-5911L (T
C
= 0ºC to +70ºC, V
CC
= 3.14 V to 3.47 V)
HFBR-5911AL (T
C
= -10 °C to +85 °C, V
CC
= 3.14 V to 3.47 V)