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HFBR-1527ETZ Datasheet(PDF) 3 Page - AVAGO TECHNOLOGIES LIMITED

Part # HFBR-1527ETZ
Description  125Megabaud Versatile Link The Versatile Fiber Optic Connection
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Manufacturer  AVAGO [AVAGO TECHNOLOGIES LIMITED]
Direct Link  http://www.avagotech.com
Logo AVAGO - AVAGO TECHNOLOGIES LIMITED

HFBR-1527ETZ Datasheet(HTML) 3 Page - AVAGO TECHNOLOGIES LIMITED

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3
Plastic Optical Fiber (1 mm POF) Transmitter Application Circuit
Performance of the HFBR-1527ETZ transmitter in the recommended application circuit (Figure 1) for POF; 1-125 MBd, 25° C.
Parameter
Symbol
Typical
Unit
Condition
Note
Average Optical Power 1 mm POF
Pavg
-9.7
dBm
50% Duty Cycle
Note 1, Fig 3
Average Modulated Power 1 mm POF
Pmod
-11.3
dBm
Note 2, Fig 3
Optical Rise Time (10% to 90%)
tr
2.1
ns
5 MHz
Optical Fall Time (90% to 10%)
tf
2.8
ns
5 MHz
High Level LED Current (On)
IF,H
19
mA
Note 3
Low Level LED Current (Off )
IF,L
3
mA
Note 3
Optical Overshoot – 1 mm POF
45
%
Transmitter Application Circuit Current Consumption –
1 mm POF
ICC
110
mA
Figure 1
Hard Clad Silica Fiber (200 μm HCS) Transmitter Application Circuit
Performance of the HFBR-1527ETZ transmitter in the recommended application circuit (Figure 1) for HCS; 1-125 MBd,
25° C.
Parameter
Symbol
Typical
Unit
Condition
Note
Average Optical Power 200 μm HCS
Pavg
-14.6
dBm
50% Duty Cycle
Note 1, Fig 3
Average Modulated Power 200 μm HCS
Pmod
-16.2
dBm
Note 2, Fig 3
Optical Rise Time (10% to 90%)
tr
3.1
ns
5 MHz
Optical Fall Time (90% to 10%)
tf
3.4
ns
5 MHz
High Level LED Current (On)
IF,H
60
mA
Note 3
Low Level LED Current (Off )
IF,L
6
mA
Note 3
Optical Overshoot – 200
m HCS
30
%
Transmitter Application Circuit Current Consumption –
200
m HCS
ICC
130
mA
Figure 1
Notes:
1. Average optical power is measured with an average power meter at 50% duty cycle, after 1 m of fiber.
2. To allow the LED to switch at high speeds, the recommended drive circuit modulates LED light output between two non-zero power levels. The
modulated (useful) power is the difference between the high and low level of light output power (transmitted) or input power (received), which
can be measured with an average power meter as a function of duty cycle (see Figure 3). Average Modulated Power is defined as one half the slope
of the average power versus duty cycle:
[Pavg @ 80% duty cycle – Pavg @ 20% duty cycle]
Average Modulated Power =
(2) [0.80 – 0.20]
3. High and low level LED currents refer to the current through the HFBR-1527ETZ LED. The low level LED “off” current, sometimes referred to as
“hold-on” current, is prebias supplied to the LED during the off state to facilitate fast switching speeds.


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