RPM872
Photo Link Module
Rev.B
6/6
Notes
1) VLEDA(8pin), VCC(3pin) and VIO(2pin)
"
Other power source can be used difference between VLEDA and VCC and VIO. (VIO < VCC +0.3V)
2) Caution in designing board lay-out
To get maximum potential from RPM872, please keep in mind following instruction.
"
The line of RXD (6pin) should be connected at backside via through hole close to RPM872 pin lead. Better not
to be close to photo diode side (1pin).
襎his is to minimize feedback supplied to photo diode from RXD.
"
As for C1 between 3-4 pin should be placed close to RPM872.
"
Better to be placed more than 1.0cm in radius from photo diode (pin1 side) and also away from the parts which
generates noise, such as DC / DC converter.
3) Others
"
Please be sure to set up the TXD (7pin) input to be L (under 0.3V) except transmitting data
(for < 90祍. On duty < 20%).
"
Powerdown current might increase if exposed by strong light (ex. direct sunlight) at powerdown mode.
"
Please use by the signal format which is specified by IrDA Ver1.2 (Low Power). There might be on error if used by
different signal format.
"
Dust or dirt on lens portion may affect the characteristics, so pay sufficient attention.
4) Eye Safe
"
IEC825-1 (EN60825-1) Class 1 Eye Safe.
External dimensions (Unit : mm)
RSLP8
R1.0
R1.1
0.78
0.76
0.37?.10
0.95
3.8
1
1
8
LED
Pin PD
7.6
5.6
P0.95 ?7=6.65
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