RPM872 データシートの表示（PDF） - ROHM Semiconductor
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RPM872 Datasheet PDF : 7 Pages
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Photo Link Module
RPM872
zNotes
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).
⇒This 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 < 90µs. 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.
zExternal dimensions (Unit : mm)
R1.1
1
7.6
5.6
3.8
R1.0
Pin PD
LED
0.78
0.76
1
8
0.37±0.10
0.95
P0.95 × 7=6.65
RSLP8
Rev.B
6/6
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