DC-1 MBd RedLink® Fiber Optic Transmitter and Receiver0 pages

DC-1 MBd RedLink® Transmitter and Receiver Pair
DATA SHEET

650 nm DC-1 MBd
RedLink® Fiber Optic
Transmitter and Receiver
FEATURES

DESCRIPTION

•

Ideal for use with POF

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Optimized for data transmission from DC to 1 MBd

•

Industrial temperature range -40⁰C to +85⁰C

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RoHS and UL compliant

The Firecomms DC to 1 MBd RedLink® transmitter is
based on the highly reliable Firecomms Resonant
Cavity Light Emitting Diode (RCLED) technology. The
receiver is based on a fully integrated differential
photo-diode with TIA and limiting amplifier.

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Flame retardant (UL 94 V-0) connector housings

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RCLED transmitter with visible red light (650 nm
wavelength)

•

Fully integrated IC receiver with dual differential
photo-diodes and integrated TIA and TTL output

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5V TTL/CMOS compatible I/O for ease of design

•

Low pulse width distortion

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Compatible with Versatile Link cables and connectors

APPLICATIONS
Table 1
APPLICATIONS

Application

Motor Control, Voltage Isolation, Drives,
Inverters, Industrial Control, Gaming,
Medical Imaging

Standard

Low-speed serial RS232, RS485, CAN Bus,
Modbus, Profibus

Distance

50 meters Step Index (SI) POF in typical
operating conditions
30 meters in worst case conditions

Speed

DC to 1 MBd (NRZ)

DC-1 MBd RedLink Transmitter& Receiver, Revision A

Firecomms assumes no responsibility for inaccuracies or omissions in the information contained in this document.
Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein.

Housed in non-conducting plastic RedLink connector
housings, the 1 MBd transmitter is gray while the 1
MBd receiver is blue. The housings are compatible
with the Versatile Link style fiber plug and are
optimized for use with Plastic Optic Fiber (POF).
The transmitter can be driven from TTL type logic
drivers and the receiver is single-ended TTL/CMOS
type output. Both transmitter and receiver operate
over the industrial temperature range of -40⁰C to
+85⁰C supporting many industrial applications where
reliable command and control response is required in
electrically harsh environments.
The transmitter uses a large-current aperture (150
μm diameter) red (650 nm) eye-safe RCLED based on
InGaP/InGaAlP/GaAs technology. It operates over a
wide range of drive current that can be adjusted
using a serial resistor to minimize current
consumption for a given link distance.
The receiver uses a monolithic IC with fully integrated
dual photo-diodes which act as a differential light
sensor, giving enhanced immunity to EMI/EMC from
the local environment making the unit ideal for use in
electrically noisy applications. It has a single data
output compatible with TTL/CMOS electronics. The
receiver is typically used at 1 MBd over POF in
industrial serial bus protocol links.