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PDF SPFMIR302 Data sheet ( Hoja de datos )
| Número de pieza | SPFMIR302 | |
| Descripción | Plastic Fiber Optic Receiver including Bigfoot IC for MOST | |
| Fabricantes | Infineon Technologies | |
| Logotipo |  |
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SPF MIR3 02
SPF MIR3 02
Plastic Fiber Optic Receiver including Bigfoot™ IC for MOST®
Preliminary Data Sheet
The data sheet of the 4-pin MOST Optical Receiver (MIR3 02) has to be taken as preliminary.
Samples which are delivered before the qualification and the production release are engineering
samples.
Features
Excellent solution for converting high
speed data from Plastic Optical Fiber (POF)
to digital output.
• High speed receiver up to 50 MBaud
(25Mbit/s net data rate)
• TTL Data Output (Light to Logic Function)
• Network activity sensing during
ZeroPower Mode (ICC<10µA)
• BUS Activity Status Output
• Good 650nm sensitivity for working in a
low attenuation range of PMMA Fiber
• Low cost
Applications
• Optical Receiver for MOST Systems
Description
The 4-pin MOST Optical Receiver (MIR3 02) is a
highly integrated CMOS IC (Bigfoot™) combined with
a high speed PIN - diode designed to receive up to
25Mbit/s optical data which is bi-phase coded at up to
50Mbaud and convert this optical data to a TTL
compatible data stream.
This high performance, low cost, CMOS receiver
consists of a low noise transimpedance amplifier and
comparator in the data path. A timer circuit puts the
part into a low power mode if optical data is not
received for 10µs (typ.). During the low power mode,
the PIN diode is still being observed and if activity is
detected, Bigfoot will resume full power operation
within 3.5ms (typ.).
A STATUS-pin indicates if modulated light is received
(Light on -> STATUS = low). With the STATUS-pin
the power supply of the whole MOST device can be
switched ON.
SSPF MMIRO3R00203
Bigfoot
Receiver
¥ 5: Vcc
Amplification/Data
Slicing/Pulse Width
Correction
¥ 8: RX_DATA
Activity
Detection
¥ 6: GND
¥ 7: STATUS
Actual design status:
Bigfoot IC package type
Revision
J CAI
Optical Sensitivity
-24.5 dBm
device marking Data sheet is valid
since
date code,
MIR3 02
2-Dec-02
Preliminary Product Information
2-Dec-02
Infineon AG
Oasis SiliconSystems AG
CONFIDENTIAL
Page 1
1 page  
Application Circuit:
SPF MIR3 02
*1) Place these components as close
as possible to their corresponding
pins of the FOT.
*2) Values can change due to different
light output power of the LED.
*3) This is just a proposal for the Rext
application. There can be used also
other circuits to switch Rext from
15K to 30K.
Design & Layout rules:
• The 100nF bypass capacitors of the FOTs must be located as close as possible between the pins
VCC and GND of the FOTs. Use ceramic caps and tantalum caps with low ESR.
• Also the inductor/ ferrite bead (receiver) and the -3dB - control circuit (transmitter) must be placed
as close as possible to the FOTs. We prefer ferrite beads (e.g. type 74279214 Würth Elektronik)
since the D.C. resistance is very low. In case other inductors are used, the D.C. resistance should
be less than 3Ohm.
• For EMC, a ferrite bead should be connected to the power supply, close to the transmitter and the
receiver. Do not use only one ferrite bead together for receiver and transmitter!
Preliminary Product Information
2-Dec-02
Infineon AG
Oasis SiliconSystems AG
CONFIDENTIAL
Page 5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet SPFMIR302.PDF ] | |
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