IrDA infrared communication module
Description
RPM872-H7
Photo Link Module
IrDA infrared communication module
RPM872-H7
RPM872-H7 is an infrared communication module for IrDA Ver.
1.
2 (Low Power).
The infrared LED, PIN photo diode, and waveform shaping 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) Applied to IrDA Ver.
1.
2.
(Low Power) 2) Designed for low power consumption at waiting mode (75µA).
3) Low operating voltage VCC=2.
0V to 3.
6V VIO=1.
5V to 3.
6V VLED=2.
6V to 5.
5V 4) Small package.
5) Power down function.
zApplications Cellular phones, PDA, Digital still camera, Handy terminals, and other portable equipments.
zAbsolute maximum ratings (Ta=25°C)
Parameter
Supply voltage Power dissipation Operating temperature Storage temperature
Symbol VCC Pd Topr Tstg
Limits 7.
0 100 −20 to +85 −30 to +100
Unit V mW ˚C ˚C
zRecommended operating conditions (Ta=25°C)
Parameter
Supply voltage
Symbol VCC VLEDA VIO
Min.
2.
0 2.
6 1.
5
Typ.
3.
0 3.
0 3.
0
Max.
3.
6 5.
5 VCC
Unit V V V
Rev.
B
1/6
RPM872-H7
Photo Link Module
zBlock diagram and application circuit
AMP
GND
1
VIO
VIO
AMP
2
VCC
VCC
AMP
3
GND
GND C1
4
POWER DOWN
PWDOWN
PWDOWN
5
RXD
RXD
6 7
TXD TXD
LEDA
(LEDVCC)
8
VCC(3pin) and VLEDA(8pin) can be used on either common power source or different one.
Rev.
B
2/6
RPM872-H7
Photo Link Module
zTerminal description
Pin No 1, 4
Terminal
GND
Circuit
Function
GND Pin1 and Pin4 must be connected to the ground.
VIO Supply voltage for I/O pins (PWDOWN, RXD, TXD)
2
VIO
3
VCC
VCC Supply voltage for Transceiver circuits.
For preventing from infection, connect a capacitor between VCC(3pin) and GND(4pin).
VIO Power-down Control Terminal H : POWERDOWN MODE L : OPERATING MODE CMOS logic level input When input is H, it will stop the receiving circuit, Pin-PD current and transmitting LED operation.
5
PWDOWN
VIO PWDOWN 6 300k RXD VIO
Receiving Data Output Terminal CMOS lo...
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