FR05DxDR
RedLink® Fiber Optic Receiver
for up to 20 V Voltage Switching
Datasheet
FR05DxDR Revision E
1
DESCRIPTION
Firecomms FR05DxDR RedLink® receiver is based on a
fully integrated photodiode with TIA, limiting amplifier
and a MOSFET open drain output to handle switching
of voltages in the range from 3 to 20 V (e.g. 3.3, 5, 12,
15 V). The part also includes an optional 1 kΩ pull-up
resistor RL.
Housed in non-conducting plastic the RedLink®
receiver connector is blue. The housings are
compatible with the Versatile Link style of fiber plug
and are optimised for use with Plastic Optic Fiber (POF).
The receiver operates over the industrial temperature
range of -40 °C to +85 °C supporting many industrial
applications where reliable command and control
response is required in electrically harsh environments.
The receiver is typically used at low switching speeds
where 12 V and 15 V power electronic devices are
being switched at kHz speeds
AVAILABLE OPTIONS
Table 1
ORDERING INFORMATION / PART NUMBERS
5 MBd Horizontal Package
Inverting, Open Drain
FR05DHDR
5 MBd Vertical Package
Inverting, Open Drain
FR05DVDR
5 MBd Tilted Package
Inverting, Open Drain
FR05DWDR
FEATURES
• MOSFET output stage typically used to switch 12 V
and 15 V thyristor gate devices
• Optimised for data rates from DC to 5 MBd
• Industrial temperature range -40 °C to +85 °C
• Flame retardant (UL 94 V-0) connector housings
• Fully integrated photodiode, TIA and limiting
amplifier in a single IC
• Integrated 1 kΩ pull-up resistor to V
CC
(R
L
)
• Low pulse width distortion
• Horizontal, Vertical and 30° Tilted options
• Compatible with Versatile Link cables and
connectors
APPLICATIONS
Table 2
APPLICATIONS
Application
Switching of 20 V, 18 V, 15 V and 12 V
thyristor gate drivers. SCR and IGBT
switching
Distance
50 meters Step Index (SI) POF in typical
operating conditions
30 meters in worst case conditions
Speed
DC to 5 MBd (depending on series
resistance and load capacitance)
FR05DxDR Revision E
2
SPECIFICATIONS
IC
1, V
O
2, GND
3, V
CC
4, R
L
8, GND
5, GND
R
L
FIGURE 1
Receiver pin-out, top view
GENERAL OPERATION
t
t
t
PropDly-HL
t
PropDly-LH
Optical Input, P
in
Receiver Output, V
o
50%
90%
50%
10%
f
r
FIGURE 2
Receiver propagation delay and rise/fall time definitions
Table 3
RECEIVER PIN DESCRIPTION
Pin
Name
Symbol
1 RECEIVER OUTPUT V
0
2 RECEIVER GROUND GND
3 RECEIVER VCC V
CC
4 R
L
PULL-UP RESISTOR R
L
5 RETAINING PIN GND
8 RETAINING PIN GND