Typical Link Data
HFBR-0400 Series
Description
The following technical data is
taken from 4 popular links using
the HFBR-0400 series: the 5
MBd link, Ethernet 20 MBd link,
Token Ring 32 MBd link, and the
corresponds to transceiver
solutions combining the HFBR-
0400 series components and
various recommended
transceiver design circuits using
off-the-shelf electrical
components. This data is meant
to be regarded as an example of
typical link performance for a
given design and does not call
out any link limitations. Please
refer to the appropriate
application note given for each
link to obtain more information.
5 MBd Link (HFBR-14xx/24x2)
Link Performance -40 °C to +85 °C unless otherwise specified
Parameter
Optical Power Budget
with 50/125 µm fiber
Optical Power Budget
with 62.5/125 µm fiber
Optical Power Budget
with 100/140 µm fiber
Optical Power Budget
with 200 µm fiber
Date Rate Synchronous
Asynchronous
Symbol
OPB
50
OPB
62.5
OPB
100
OPB
200
Min.
4.2
Typ.
9.6
Max.
Units
dB
Conditions
HFBR-14x4/24x2
NA = 0.2
HFBR-14x4/24x2
NA = 0.27
HFBR-14x2/24x2
NA = 0.30
HFBR-14x2/24x2
NA = 0.37
Reference
Note 1
8.0
15
dB
Note 1
8.0
15
dB
Note 1
12
20
dB
Note 1
dc
dc
5
2.5
MBd
MBd
Note 2
Note 3,
Fig 7
T
A
= +25 °C
P
R
= -21 dBm peak
Figs 6, 7, 8
Propagation Delay
LOW to HIGH
Propagation Delay
HIGH to LOW
System Pulse Width
Distortion
Bit Error Rate
t
PLH
t
PHL
t
PLH
- t
PHL
BER
72
ns
46
ns
26
10
-9
ns
Fiber cable length = 1 m
Data rate <5 Bd
P
R
> -24 dBm peak
Notes:
1. OPB at T
A
= -40 to +85 °C, V
CC
= 5.0 V dc, IF ON = 60 mA. P
R
= -24 dBm peak.
2. Synchronous data rate limit is based on these assumptions: a) 50% duty factor modulation, e.g., Manchester I or BiPhase Manchester II; b)
continuous data; c) PLL Phase Lock Loop demodulation; d) TTL threshold.
3. Asynchronous data rate limit is based on these assumptions: a) NRZ data; b) arbitrary timing-no duty factor restriction; c) TTL threshold.
10
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