FM20VHIRFM20VVIR
RedLink®FiberOpticReceiver
forDirectHighVoltageSwitching
PreliminaryDataSheet
FM20VHIRFM20VVIRRevisionP4
1
NOT RECOMMENDED FOR NEW DESIGNS
* For new designs please see part numbers: FR20DHIR FR20DVIR
DESCRIPTION
ThisFirecommsRedLink®receiverisbasedonafully
integrated photodiode with TIA, limiting amplifier
and a MOSFET open source output to handle
switching of voltages in the range from 3 to 20V
(e.g. 3.3, 5, 12, 15V). The part also includes an
optional1kΩpullupresistorR
L
.
Housed in non‐conducting plastic the RedLink®
receiver connector is blue. The housings are
compatiblewiththeVersatileLinkstyleoffiberplug
and are optimized for usewithPlasticOpticFiber
(POF).
The receiver operates over the industrial
temperature range of ‐40⁰C to +85⁰C supporting
many industrial applications where reliable
command and control response is required in
electricallyharshenvironments.
The receiver is typically used at low switching
speeds where 12V and 15V power electronic
devices arebeingswitchedatkHzspeedsbutcan
operateupto5MBdifrequired.
AVAILABLEOPTIONS
Table1
ORDERINGINFORMATION/PARTNUMBERS
5MBdHorizontalPackage
Inverting,TTL
FM20VHIR
5MBdVerticalPackage
Inverting,TTL
FM20VVIR
FEATURES
IdealforusewithPOF
MOSFEToutputstagetypicallyusedtodirectly
switch12Vand15Vthyristorgatedevices.
Optimizedfordatatransmissionfrom
DCto5MBd
Industrialtemperaturerange‐40⁰Cto85⁰C
Flameretardant(UL94V‐0)connector
housings
Fullyintegratedphotodiode,TIAandlimiting
amplifierinasingleIC
5VTTL/CMOScompatibleI/Oforeaseof
design
Integrated1kΩpullupresistortoVcc(R
L
)
Lowpulsewidthdistortion
CompatiblewithVersatileLinkcablesand
connectors
APPLICATIONS
Table2
APPLICATIONS
Application
Switchingof20V,18V,15Vand12V
thyristorgatedrivers.Directswitchingof
SCR’sandIGBT’s
Distance
50metersStepIndex(SI)POFintypical
operatingconditions
30metersinworstcaseconditions
Speed
DCto5MBd(dependingonseries
resistanceandloadcapacitance)