參數(shù)資料
型號: RPM870-H14
廠商: Rohm CO.,LTD.
英文描述: IrDA wireless communication transceiver IC (supports Ver. 1.2 Low Power)
中文描述: 無線通信的IrDA收發(fā)器集成電路(支持版本。1.2低功率)
文件頁數(shù): 5/7頁
文件大小: 95K
代理商: RPM870-H14
RPM870-H14
Photo Link Module
5/6
Timing chart
more than 48
sec
approximately 48
sec
less than 2.3
sec
more than 2.3
sec
approximately 2.3
sec
approximately 2.3
sec
pull up to VCC at
approximately 300k
(Emitting side)
(Detecting side)
TXD
(7pin)
Internal LED
(Light output)
Light input
RXD
(6pin)
PWDOWN
(5pin)
less than 48
sec
(emitting)
Notes
1) LEDVCC (8pin) and VCC (3pin)
Other power source can be used difference between LEDVCC and VCC.
2) Caution in designing board lay-out
To get maximum potential from RPM870-H14, please keep in mind following instruction.
The line of RXD (6pin) should be connected at backside via through hole close to RPM870-H14 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 RPM870-H14.
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 0.5V) except transmitting data
(for
< 90sec. 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.
Please pay attention to the lens carefully. Dusts of scratch on the lens may effect the characteristics of product. Please
handle it with care.
4) Eye Safe
IEC825-1 (EN60825-1) Class 1 Eye Safe.
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