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PDF RPM873 Data sheet ( Hoja de datos )
| Número de pieza | RPM873 | |
| Descripción | IrDA Infrared Communication Module | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RPM873 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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Photo Link Module
RPM873
IrDA Infrared Communication Module
RPM873
RPM873 is an infrared communication module for IrDA Ver. 1.2 (Low Power). The infrared LED, PIN photo diode, and
LSI are all integrated into one single package. This module is designed for low power consumption. The very small
package makes it a perfect fit for mobile devices.
zFeatures
1) Infrared LED, PIN photo diode, LED driver and built-in receiver frequency formation circuit.
2) Applied to SIR (2.4 to 115.2kbps) low power standard.
3) Supply voltage range is from VCC=2.0 to 3.6V, VLEDA=2.6 to 5.5V.
4) Surface mounting type.
5) Built-in power down function.
zApplications
Cellular phones, PDA, DVC, digital still cameras, printers, handy terminals and etc.
zAbsolute maximum ratings (Ta=25°C)
Parameter
Supply voltage
Input voltage
Operation temperature
Symbol
VCC/VLEDA
Vin(5,6,7pin)
Topr
Limits
7.0 ∗1
−0.3 to VCC+0.3
−25 to 85
Unit
V
V
°C
Storage temperature
Power dissipation
Tstg −30 to 100
°C
Pd
100 ∗2
mW
∗1) This applies to all pins on the basis of ground pins (1,4pin).
∗2) In case of operating environment is over 25°C, 1.33mW would be reduced per each 1°C stepping up.
zRecommended operating conditions (Ta=25°C)
Parameter
Symbol Min. Typ. Max.
Supply voltage
VCC 2.0 3.0 3.6
VLEDA
2.6
3.0
5.5
Units
V
V
Rev.B
1/6
1 page  
Photo Link Module
zTiming chart
(Emitting side)
TXD
(7pin)
less than 48 µs
Internal LED
(Light output)
(emitting)
more than 48 µs
(emitting)
approximately 48 µs
(Detecting side)
Light input
less than 2.3 µs
more than 2.3 µs
RXD
(6pin)
approximately 2.3 µs
RPM873
(emitting)
pull up to VCC at approximately
300 kΩ
PWDOWN
(5pin)
zNotes
1) VLEDA (8pin) and VCC (3pin)
•Other power source can be used difference between VLEDA and VCC.
2) Caution in designing board lay-out
To get maximum potential from RPM873, please keep in mind following instruction.
•The line of RXD (6pin) should be connected at backside via through hole close to RPM873 pin lead.
Better not to be close to photo diode side (1pin).
⇒This is to minimize feedback supplied to photo diode from RXD.
•Better to be placed more than 1.0cm in radius from photo diode (pin1 side) and also away from the parts which
generate noise, such as DC / DC converter.
•As for C1 between 3-4pin should be placed close to RPM873.
3) Notes
•Please be sure to set up the TXD (7pin) input to be “L” (under 0.55V) except transmitting data
(for<90µs, ON duty<20%)
•Power down current might increase if exposed by strong light (ex. direct sunlight) at power down mode.
•Please use by the signal format which is specified by lrDA Ver1.2 (2.4k to 115.2kbps).
There might be on error if used by different signal format.
4) Eye Safe
•IEC825-1 (EN60825-1) Class 1 Eye Safe.
Rev.B
5/6
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet RPM873.PDF ] | |
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