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RPM882-H12
Photo Link Module
IrDA Infrared Communication Module
RPM882-H12
RPM882-H12 is an infrared communication module for IrDA Ver. 1.2 (Low Power). The infrared LED, PIN photo diode, LSI are all integrated into a single package. This module is designed with power down function and low current consumption at stand-by mode. The ultra small package makes it a perfect fit for mobile devices.
Features 1) Infrared LED, PIN photo diode, LED driver & Receiver frequency formation circuit built in. Improvement of EMI noise protection because of Shield Case. 2) Applied to SIR (2.4 to 115.2kbps) 3) Surface mount type. 4) Power down function built in. 5) Low voltage operation as 1.5V of interface terminals to controller (TXD, RXD, PWDOWN, TX-RC). 6) Infrared remote control transmission driver built-in.
Applications Mobile phone, PDA, DVC, Digital Still Camera, Printer, Handy Terminal etc.
Absolute maximum ratings (Ta=25C)
Parameter Supply voltage Input voltage Operation temperature Storage temperature LED peak current Power dissipation Symbol Vmax Vin (4, 5, 6, 7pin) Topr Tstg IFP Pd Limits 7.01 -0.3 to VIO+0.3 -25 to +85 -30 to +100 3002 3003 Unit V V C C mA mW
1 This applies to all pins basis ground pins (1pin) 2 LED Peak Current< 90s, On duty 50% 3 When glass-epoxy board (70 70 1.6mm) mounted. In case operating environment is over 25C, 4mW would be reduced per each 1C stepping up.
Recommended operating conditions (Ta=25C)
Parameter Supply voltage Interface supply voltage LED supply voltage Symbol VCC VIO VLEDVCC Min. 2.4 1.5 2.6 Typ. 3.0 3.0 3.0 Max. 3.6 VCC 5.5 Unit V V V
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RPM882-H12
Photo Link Module
Block diagram and application circuit
AMP
GND
1
C1
GND
AMP
2
VIO
+
VIO
VCC
VCC
AMP
3
TX-RC
4
TX-RC
POWER DOWN
PWDOWN / LED Mode PWDOWN / LED Mode
5
6
RXD
RXD
7
TXD TXD
8
sw
LEDA
R1
(LEDVCC)
VCC (3pin) ,VIO (2pin) and LEDVCC (8pin) can be used on either common power source or different one
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RPM882-H12
Photo Link Module
Terminal description
Pin No 1
Terminal
GND
Circuit
Ground
Function
2
VIO
Supply voltage for I/O pins. (TX-RC, PWDOWN, RXD, TXD) Power Supply Terminal For preventing from infection, connect a capacitor between VCC (3pin) and GND (1pin).
3
VCC
VIO
RC Transmitting Data Input Terminal H : LED Emitting CMOS Logic Level Input Holding TX-RC='H' status, LED will be turn off approximately 48s.
4
TX-RC
200k
VIO
5
PWDOWN / LED Mode
Power-down Control and LED Intensity switching Terminal H : POWERDOWN (RC transmitting Mode) L : OPERATION CMOS Logic Level Input When input is 'H', it will stop the receiving circuit and Pin-PD current.
VIO PWDOWN VIO 300k
Receiving Data Output Terminal CMOS Logic Level Output When PWDOWN (5pin)= 'H', the RXD output will be pulled up to VIO at approximately 300k.
6
RXD
VIO
Transmitting Data Input Terminal IrDA TXD input at PWDOWN=L (Remote control transmitting input at PWDOWN=H). H : LED Emitting CMOS Logic Level Input Holding TXD="H" status, LED will be turn off approximately 48s.
7
TXD
200k
8
LEDA
LED
LED ANODE Terminal Other power source can be used difference between LEDVCC and VCC. LED current depends on LED load resistance value at RC mode.
-
Shield Case
Connect to Ground.
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RPM882-H12
Photo Link Module
Electrical characteristics (Unless otherwise noted, VCC= VIO=3.0V, VLEDVCC=3.0V, Ta=25C)
Parameter Consumption current1 Consumption current2 Data rate PWDOWN input high voltage PWDOWN input low voltage PWDOWN input high current PWDOWN input low current

Symbol ICC1 ICC2
Min. - - 2.4
Typ. 80 0.01 - - -
0 0
Max. 104 0.2 115.2 VIO 1/3VIO VIO-1.2
1.0 1.0
Unit A A kbps V V
A A
VIO=1.8 to 3.6V VIO=1.5 to 1.8V VIO=1.8 to 3.6V VIO=1.5 to 1.8V
Conditions PWDOWN=0V At no input light PWDOWN=VIO At no input light
VPDH VPDL IPDH IPDL
2/3VIO 1.2 0
-1.0 -1.0
PWDOWN=VIO
PWDOWN=0V
TXD/TX-RC input high voltage TXD/TX-RC input low voltage TXD/TX-RC input high current TXD/TX-RC input low current LED anode current (IrDA Mode)
LED anode current (RC Mode)
VTXH VTXL ITXH ITXL ILEDA1
ILEDA2
2/3VIO 1.2 0 7.5 -1.0 28
150
- - 15 0 40
200
VIO 1/3VIO VIO-1.2 30 1.0 52
245
V V A A mA
mA
VIO=1.8 to 3.6V VIO=1.5 to 1.8V VIO=1.8 to 3.6V VIO=1.5 to 1.8V
TXD=VIO or TX-RC=VIO TXD=0V or TX-RC=0V TXD=VIO, R1=4.7, PWDOWN=0V TX-RC=VIO, R1=4.7, PWDOWN=VIO
IRXH= -200A IRXL=200A CL=15pF CL=15pF CL=15pF, 2.4 to 115.2kbps
RXD output high voltage RXD output low voltage RXD output rise Time RXD output fall Time RXD output pulse width Receiver latency time
VRXH VRXL tRR tFR twRXD tRT
VCC-0.4 0 - - 1.5 -
- - 35 35 2.3 100
VIO 0.4 - - 4.2 200
V V ns ns s s
Optical characteristics (Unless otherwise noted, VCC= VIO=3.0V, VLEDVCC=3.0V, Ta=25C)
Parameter Peak wave length1 (IrDA Mode) Peak wave length2 (RC Mode) Intensity1 (IrDA Mode)
Intensity2 (RC Mode)
Half-angle
Optical pulse width1 (IrDA Mode)
Symbol P1 P2 IE1
IE2
L/2
TWLED1
Min. 880 850 880 4
30
15
1.42
Typ. 890 - 890 13
65
22
1.63
Max. 892 900 920 28
130
-
2.02
Unit nm nm nm mW/sr
mW/sr
deg
s
Conditions ILED=50mA, Duty20% ILED=50mA, Duty20%, -20 to 60C ILED=200mA, Duty20%
-15 -15 L L 15 15 R1=4.7 R1=4.7
TXD=1.63s pulse input TX-RC=10s pulse input 10% to 90%
R1=4.7 R1=4.7
Optical pulse width2 (RC Mode) Rise time / Fall time Optical over shoot Edge jitter Minimum Irradiance in angular Maximum Irradiance in angular Input half-angle Maximum emitting time
TWLED2 Tr/Tf
9.5 - - -40 - 500 15 20.5
10 60 - - 3.6 - - 48
10.5 120 25 40 6.8 - - 120
s ns % ns W/cm2 mW/cm2 deg s
Tj Eemin Eemax D/2 TLEDmax
-15 -15
L L
+15 +15
TXD=0
VIO or TX-RC=0
VIO
1. This product is not designed for protection against radioactive rays. 2. This product dose not include laser transmitter. 3. This product includes one PIN photo diode. 4. This product dose not include optical load.
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RPM882-H12
Photo Link Module
LED Operation Mode Table
PWDOWN (5pin) L L L H H H L L L TX-RC (4pin) L L L L TXD (7pin) L LED Emitting Mode OFF IrDA RC OFF RC RC IrDA Receiver Operation Condition ON ON ON OFF OFF OFF
Notes) Please be sure to set up the TX-RC (4pin) and the TXD (7pin) input to be ''L'' (under 0.3V) except transmitting data (for < 90s. ON Duty 50%). of TX-RC (4pin) and TXD (7pin) in the table above is supposed to be the pulse input. When either TX-RC (4pin) input TXD (7pin) input keeps the state of ''H'' (more than appproximately 48s), LED will be turned off due to LED pulse width limiting circuit if the pulse is input from the other terminal. Therefore, don't use as the normal transmitting is impossible. Please input the pulse when both TX-RC (4pin) and TXD (7pin) are ''L''.
Interface operating timing (Emitting side) (1) When TXD output for IrDA and TXD output for remote controller is 1 line.
1 GND VIO VCC TX-RC PWDOWN RXD TXD LEDA 8 IrDA / RC Controller
VIO VCC
Input PWDOWN L L H H L TXD L Condition LED Mode OFF IrDA OFF RC Recriver circuit ON ON OFF OFF
LEDVCC
( "L" )
TX-RC (4pin)
Min 1s
Min 1s
Min 1s
Min 1s
TXD (7pin)
PWDOWN (5pin)
LED Emitting Emitting Mode
IrDA
RC
RC
IrDA
If TX-RC or TXD input pulse width is wider than 48s, output LED emitting pulse will be turn off approximately 48s.
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RPM882-H12
Photo Link Module
(2) When TXD output for IrDA and TXD output for controller are different lines.
1
GND
VIO
VIO VCC
RC Transmitting Controller (BU787X etc)
VCC
TX-RC
PWDOWN
RXD
IrDA / RC Controller
TXD LEDA
8
LEDVCC
(2-a) RC transmitting mode at IrDA receiver active condition.
Input PWDOWN L L L H L TX-RC L L
L L TXD L
Condition LED Mode OFF IrDA RC OFF Recriver circuit ON ON ON OFF
TX-RC (4pin)
Min 1s
Min 1s
TXD (7pin)
PWDOWN (5pin)
LED Emitting Emitting Mode
RC
IrDA
IrDA
RC
If TX-RC or TXD input pulse width is wider than 48s, output LED emitting pulse will be turn off approximately 48s.
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RPM882-H12
Photo Link Module
(2-b) RC transmit mode at IrDA receiver power down condition.
Input PWDOWN L L H H L TX-RC L L
L L
Min 1s
Condition
TXD L
LED Mode OFF IrDA RC OFF
Recriver circuit ON ON OFF OFF
Min 1s
TX-RC (4pin)
Min 1s
Min 1s
TXD (7pin)
PWDOWN (5pin)
LED Emitting Emitting Mode
IrDA
RC
RC
IrDA
If TX-RC or TXD input pulse width is wider than 48s, output LED emitting pulse will be turn off approximately 48s.
(Receiving side)
Light input
Min 200s
PWDOWN RXD (5pin)
RXD (6pin)
Pull up to VIO at approximately 300k
RXD output width is fixed approximately 2.3s.
Note RXD output become stable after 200s since PWDOWN is changed from H to L. RXD output could be unstable at H to L within 200s.
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RPM882-H12
Photo Link Module
Attached components Recommended values
Part symbol C1 R1 Recommended value 1F, tantalum or ceramic Ex.) TCFGA1A105M8R (ROHM) 4.75%, 1/8W (VLEDVCC=3V) Notice Bigger capacitance is recommended with much noise from power supply At LED Emitting Duty=20%
[LED current set-up method for Remote control mode] In case of using R1 with different condition from the above, formula is as follows : LED resistance value : R1[], LED average consumption current : ILED[mA], Supply voltage : VLEDVCC[V], minimum necessary of irradiant intensity le1 [mW / sr] (Including LED's distribution within 15deg) R1=166 x (VLEDVCC-1.28) / le1-5.0 ILED=Duty x (VLEDVCC-1.28) / (R1+3.5) Duty : LED duty at emitting
Please set up to be ILED / Duty < 250[mA] (Duty 50%) At IrDA Mode, LED current is constantly approximately 40mA. (Reference) In case of using R1, typical intensity (le1typ) and maximum intensity (le1max) on axis are described as below. le1typ=300 x (VLEDVCC-1.28) / (R1+3.5) le1max=600 x (VLEDVCC-1.28) / (R1+3.5)
Notes 1) LEDVCC (8pin), VCC (3pin) and VIO (2pin) * Other power source can be used difference between LEDVCC and VCC and VIO. (VIO < VCC + 0.3V) 2) Caution in designing board lay-out To get maximum potential from RPM882-H12, please keep in mind following instruction. * The line of RXD (6pin) should be connected at backside via through hole close to RPM882-H12 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 1-3 pin should be placed close to RPM882-H12. * 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) Notes * Please be sure to set up the TX-RC (4pin) and the TXD (7pin) input to be "L" (under 0.3V) except transmitting data (for < 90s, ON duty 50%). * Power down current might increase if exposed by strong light (ex. direct sunlight) at powerdown mode. * Please use by the signal format at IrDA operating mode which is specified by IrDA Ver1.2 (2.4k to 115.2kbps). 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.
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RPM882-H12
Photo Link Module
*
4) Eye safe IEC60825-1 (IEC60825-1 amendment2), Class 1 Eye Safe.
5) LED current derating and amdient temperature The relation between LED peak current and maximum ambient temperature is shown below. We recommend you to use within the range as indicated in below. When glass-epoxy board (70x70x1.6mm) mounted.
MAXIMUM LED PEAK CURRENT : Iledp (mA)
300
Duty:10%
250
Duty:50%
200
Duty:40%
150 100
Duty:30%
Duty:20%
50 0 -20
0
20
40
60
80
100
AMBIENT TEMPERATURE : Ta (C)
External dimensions (Unit : mm)
3.0
0.6
3.0
2.4
PinPD 8.0
LED
0.840.1 1.75
5.6 2.8
2.72
0.56
2.49
A Part Size (Shield Case underside size)
1 P0.95x7=6.65 7.6
8
3.0
0.60.1
0.680.1
NOTE
0.60.1
TOLERANCE : 0.2mm COPLANARITY : 0.1mmMAX UNIT : mm
A
ETH450
0.75
0.370.1
2.0
0.150.1
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Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. About Export Control Order in Japan Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control Order in Japan. In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause) on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.1

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