SFH551-1 Datasheet, PDF (1/5 Pages) Infineon Technologies AG – Integrated Photo Detector Receiver for Plastic Fiber Plastic Connector Housing

SFH551/1-1 and SFH551/1-1V
Receiver with Digital Output Stage
for Polymer Optical Fiber Applications
Data Sheet
Description
The SFH551/1-1 receiver is a transimpedance amplifier
with an integrated photodiode and TTL open-collector
output stage. The active area of this detector combined
with the molded microlens gives an efficient coupling
from the end of the polymer optical fiber. This receiver
enables data rates up to 5 MBd and works with the Avago
SFH757 transmitter diode.
The SFH551/1-1 is fully DC coupled and therefore no
line code is needed. The internal Schmitt trigger ensures
stable output states over the whole dynamic range. If
light with intensity above the threshold level is coupled
into the SFH551/1-1, the electrical output will be logical
“low” and vice versa.
With noisefree Vcc and GND, an undefined output signal
is not possible. Nevertheless, the SFH551/1-1 must not
be used without shielding from ambient light. If ambient
light could reach the threshold level, the SFH551/1-1V
component should be chosen. The plastic connector
housing of the SFH V-series shields the ambient light
perfectly.
SFH series components are optimized for easy coupling.
No fiber stripping is required; just insert the cut fiber into
the selected SFH component.
Ordering Information
Features
 Bipolar IC with open-collector output
 Digital output, full TTL compatible
 Sensitive in visible and near IR range
 Transfer rate ≤ 5MBd
 Low switching threshold
 2.2mm aperture holds standard 980/1000/2200μm
plastic fibers
 No fiber stripping required
 Molded microlens for efficient coupling
Plastic Direct Fiber Connector housing (V-housing)
 Locking screw attached to the connector
 Interference-free transmission by the light-tight
housing
 Transmitter and receiver can be positioned flexibly
 No cross talk
 Auto insertable and wave solderable
 Supplied in tubes
Applications
 Household electronics
 Power electronics
 Optical networks
SFH551/1-1
Type
SFH551/1-1
SFH551/1-1V
SFH551/1-1V
Ordering Code
SP000063860
SP000063855
Application Literature
AN #
5342
5341
Description
General information about the SFH series
with Selection Guide and recommendations
regarding System Planning and Mounting
Information about Basic and Special Circuits for
Transmitter and Receiver of the SFH series