HFBR-0507Z Datasheet, PDF (2/12 Pages) AVAGO TECHNOLOGIES LIMITED – 125 Megabaud Versatile Link The Versatile Fiber Optic Connection

HFBR-0507Z Series
125 MBd Data Link
Data link operating conditions and performance are
specified for the HFBR-15X7Z transmitter and HFBR-25X6Z
receiver in the recommended applications circuits shown
in Figure 1. This circuit has been optimized for 125 MBd
operation. The Applications Engineering Department in
the Avago Optical Communication Division is available to
assist in optimizing link performance for higher or lower
speed operation.
Recommended Operating Conditions for the Circuits in Figures 1 and 2.
Parameter
Symbol
Min.
Ambient Temperature
Supply Voltage
Data Input Voltage – Low
Data Input Voltage – High
Data Output Load
Signaling Rate
Duty Cycle
T_A
0
V
+4.75
CC
V
V -1.89
IL
CC
V
V -1.06
IH
CC
R
45
L
f
1
S
D.C.
40
Max.
Unit
70
°C
+5.25
V
V -1.62
V
CC
V -0.70
V
CC
55
Ω
125
MBd
60
%
Reference
Note 1
Note 2
Link Performance: 1-125 MBd, BER ≤ 10^-9, under recommended operating conditions with recommended transmit
and receive application circuits.
Parameter
Symbol
Min.^[3] Typ.^[4] Max. Unit Condition
Reference
Optical Power Budget, 1 m POF
OPB
11
16
dB
POF
Optical Power Margin,
20 m Standard POF
OPM
3
6
dB
POF,20
Note 5,6,7
Note 5,6,7
Link Distance with
Standard 1 mm POF
l
20
27
m
Optical Power Margin,
25 m Low Loss POF
OPM_POF,25
3
6
dB
Note 5,6,7
Link Distance with Extra
Low Loss 1 mm POF
l
25
32
m
Optical Power Budget, 1 m HCS
OPB_HCS
7
12
dB
Optical Power Margin,
100 m HCS
OPM
3
6
dB
HCS,100
Note 5,6,7
Note 5,6,7
Link Distance with HCS Cable
l
100
125
m
Notes:
1. If the output of U4C in Figure 1, page 4 is transmitted via coaxial cable, terminate with a 50 Ω resistor to V - 2 V.
CC
2. Run length limited code with maximum run length of 10 μs.
3. Minimum link performance is projected based on the worst case specifications of the HFBR-15X7Z transmitter, HFBR-25X6Z receiver,
and POF cable, and the typical performance of other components (e.g. logic gates, transistors, resistors, capacitors, quantizer, HCS cable).
4. Typical performance is at 25°C, 125 MBd, and is measured with typical values of all circuit components.
5. Standard cable is HFBR-RXXYYYZ plastic optical fiber , with a maximum attenuation of 0.24 dB/m at 650 nm and NA = 0.5.
Extra low loss cable is HFBR-EXXYYYZ plastic optical fiber, with a maximum attenuation of 0.19 dB/m at 650 nm and NA = 0.5.
HCS cable is HFBR-H/VXXYYY glass optical fiber, with a maximum attenuation of 10 dB/km at 650 nm and NA = 0.37.
6. Optical Power Budget is the difference between the transmitter output power and the receiver sensitivity, measured after 1 meter of fiber.
The minimum OPB is based on the limits of optical component performance over temperature, process, and recommended power supply
variation.
7. The Optical Power Margin is the available OPB after including the effects of attenuation and modal dispersion for the minimum link distance:
OPM = OPB - (attenuation power loss + modal dispersion power penalty). The minimum OPM is the margin available for longterm LED LOP
degradation and additional fixed passive losses (such as in-line connectors) in addition to the minimum specified distance.
2