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RPM971-H14
Photo Link Module
IrDA Infrared Communication Module
RPM971-H14
RPM971-H14 is an infrared communication module for IrDA Ver. 1.4 (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.
Features 1) Infrared LED, PIN photo diode, LED driver and receiver frequency formation circuit built in. Improvement of EMI noise protection by Shield Case. 2) Applied to SIR (9.6k to 115.2kbps), MIR (0.576M, 1.152Mbps) and FIR(4Mbps). 3) Surface mount type. 4) Power down function built in. 5) Adjustable communication distance by LED load resistance value.
Applications Cellular 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 Vcc / VLEDA / VIO Vin(3,4,5pin) Topr Tstg Ifp Pd Limits 6.5 1 -0.3 to VIO+0.3 -25 to 85 -30 to 100 400 2 300 3 Units V V C C mA mW
1) This applies to all pins basis ground pin (8pin). 2) LED Peak Current : < 90 s, On duty < 25% 3) When glass-epoxy board (70x70x1.6mm) mounted. In case of operating environment is over 25C, 4mW would be reduced per each 1C stepping up.
Recommended operating conditions
Parameter Symbol VCC Supply voltage VLEDA VIO Min. 2.4 2.7 1.7 Typ. 3.0 3.0 3.0 Max. 3.6 5.5 VCC Units V V V
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RPM971-H14
Photo Link Module
Terminal description
Pin No Terminal Circuit Function LED Anode Terminal Other power source can be used difference between LEDVCC and VCC. LED current depends on LED load resistance value. Include internal current limiter (max.400mA). NC 2 NC VIO 3 TXD 600k This terminal must be left open. Transmitting Data Input Terminal H:LED radiant (PWDOWN='L') CMOS Logic Level Input. Holding TXD="H"status, LED will be turn off approximately 48 s. Receiving Data Output Terminal PWDOWN 300k 4 RXD When PWDOWN(5pin)='H', the RXD output will be pulled up to VIO at approximately 300 k.
LED 1 LEDA
VIO VIO
VIO PWDOWN /Mode
Power-down Control and Mode SettingTerminal H: POWERDOWN L : OPERATION CMOS Logic Level Input.
When input is "H", it will stop the receiving circuit, Pin-PD current and transmitting LED operation. VCC Supply voltage for Transceiver circuits. For preventing from infection, connect a capacitor between GND(8pin). VIO Supply voltage for I / O pins (PWDOWN,RXD,TXD). GROUND Connect to Ground.
5
6
VCC
7 8 -
VIO GND Shield Case
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RPM971-H14
Photo Link Module
Electrical characteristics (Unless otherwise noted, VCC=3V, VLEDVCC=3V, VIO=3V, Ta=25C)
Parameter Consumption current 1(SMIR mode) Consumption current 2(FIR mode) Consumption current 3(at PWDOWN) Transmission rate PWDOWN input high voltage PWDOWN input low voltage PWDOWN input high current PWDOWN input low current < Transmitter > TXD input high voltage TXD input low voltage TXD input high current TXD input low current LED anode current < Receiver > RXD output high voltage RXD output low voltage RXD output rise time RXD output fall time RXD output pulse width(SIR) RXD output pulse width(MIR1) RXD output pulse width(MIR2) RXD output pulse width(FIR1) RXD output pulse width(FIR2) Receiver latency time VRXH VRXL tRR tFR twRXDS twRXDM1 twRXDM2 twRXDF1 twRXDF2 tRT VIO-0.4 0 - - 1.0 200 100 85 195 - - - 20 20 2.3 434 217 125 250 100 VIO 0.4 - - 4.0 800 500 165 290 200 V V ns ns s ns ns ns ns s IRXH= -200A IRXL=200A CL=15pF CL=15pF CL=15pF, 9.6k to 115.2 kbps, duty19% CL=15pF, 0.576 Mbps, duty25% CL=15pF, 1.152 Mbps, duty25% CL=15pF, 4 Mbps(125ns pulse) CL=15pF, 4 Mbps(250ns pulse) VTXH VTXL ITXH ITXL ILED1 2/3VIO 0 2.5 -1.0 - - - 5 0 170 VIO 1/3VIO 10 1.0 - V V A A mA VIO=1.7 to 3.6 V (VIO < VCC) - TXD=VIO TXD=0V R1=5.6 VPDH VPDL IPDH IPDL Symbol ICC1 ICC2 ICC3 Min. 400 400 - 0.0096 2/3VIO 0 -1.0 -1.0 Typ. 800 1000 0.01 - - - 0 0 Max. 1600 1600 0.2 4 VIO 1/3VIO 1.0 1.0 Unit A A A Mbps V V A A VIO=1.7 to 3.6 V (VIO < VCC) - PWDOWN=VIO PWDOWN=0V Conditions PWDOWN=0V, At no input light PWDOWN=0V, At no input light PWDOWN=VIO, At no input light
Optical characteristics (Unless otherwise noted, VCC=3V, VLEDVCC=3V, VIO=3V, Ta=25C)
Parameter Peak wave length Intensity Half-angle Rise time / Fall time Optical over shoot Edge jitter Optical pulse width(MIR) Optical pulse width(FIR) Minimum irradiance in angular1 Minimum irradiance in augular2 Maximum irradiance in augular Input half-angle Maximum emitting time Tj TweM TweF Eemin1 Eemin2 Eemax D / 2 TLEDmax Symbol P IE L / 2 Tr / Tf Min. 850 25 - - - -25 172 115 - - 500 15 16 Typ. 870 63 18 - - - 217 125 - - - - 48 Max. 900 - - 40 25 25 256 135 8 20 - - 120 Unit nm mW / sr deg ns % ns ns ns W / cm2 W / cm2 deg s TXD=VIO tTXD=217ns tTXD=125ns -15 deg < L < 15 deg, < 115.2kbps - - - -15 deg < L < 15 deg, < 115.2kbps - - 10% to 90% -15 deg < L < 15 deg - - R1=5.6 Conditions
mW / cm2 -15 deg < L < 15 deg - -
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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RPM971-H14
Photo Link Module
Timing chart 1. Mode Setting (SIR / MIR / FIR) With RPM971-H14 there is a need for mode switch according to communication rate. For the mode setting, there are "PWDOWN/Mode" and "TXD". Please see below diagram for the set up of mode.
(a) FIR Mode (b) SIR / MIR Mode
PWDOWN / Mode
> ts = 200ns > ts = 200ns
PWDOWN / Mode
> ts = 200ns > ts = 200ns
TXD
tdmax=200s
TXD
tdmax=200s FIR Mode (4Mbps)
Mode
Mode
SIR / MIR Mode (9.6k-1.152Mbps)
Fig. 1
2. Timing chart (use example) (a) Emitting When a pulse is inputted to TXD terminal, LED is emitting, and a signal is transmitted. But, when "H" condition follows TXD terminal, LED turns off the lights in the range of TLEDmax.
TXD
less than TLEDmax
more than TLEDmax
LED emitting
TLEDmax
PWDOWN
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RPM971-H14
Photo Link Module
(b) Detecting When it is received an optical signal, a signal outputs from RXD terminal at the following timing. It is outputted in the pulse width fixed at the time of SIR mode (9.6k to 115.2kbps). It is outputted in the pulse width which is the same as the input signal at the time of MIR mode (0.576M, 1.152Mbps) and FIR mode (4Mbps). But, as for the pulse width of the input signal, it is based on IrDA Physical Layer Specification.
1 SIR mode (output example)
Light input
less than 2.3s more than 2.3s
RXD
approximately 2.3s
300k pull up
PWDOWN
2 MIR mode (output example)
Light input
434ns 217ns
RXD
434ns 217ns
300k pull up
PWDOWN
3 FIR mode (output example)
Light input
125ns 250ns
RXD
125ns 250ns
300k pull up
PWDOWN
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RPM971-H14
Photo Link Module
External dimensions (Unit : mm)
R1.0 8.0
R1.1 2.2
2.2
LED
0.150.1
1.1 1.4 2.8 4.0
PinPD
1.0
0.78 2.59
0.150.1 0.76
NOTE 1.TOLERANCE : 0.2mm 2.COPLANARITY : 0.1mmMAX UNIT : mm ETH396
2.67
1 0.370.1 0.95 P0.95x7=6.65
8
2.9
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RPM971-H14
Photo Link Module
Block diagram and application circuit
LEDA 1
R1 LEDVCC
2
NC
TXD TXD 3 RXD 4
RXD
POWER DOWN /Mode
PWDOWN/Mode PWDOWN /Mode VCC C1 7 VIO VIO VCC 5 6 GND 8
AMP
AMP
AMP
GND
Attached components
Part symbol C1 Recommended value
6.8F, Ceramic or tantalum Ex.)TCFGA1A685M8R(ROHM) 5.6 5%, 1/4W (LEDVCC=3.0V)
Notice
Bigger capacitance is recommended with much noise from power supply.
R1
10 5%, 1/4W (LEDVCC=3.7V) 18 5%, 1/4W (LEDVCC=5.0V)
Including LED's distribution within 15deg.
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 Ie1 [mW / sr] R1 = 170 x (VLEDVCC - 1.45) / Ie1 -5 [] ILED = Duty x (VLEDVCC - 1.36) / (R1+4) [A] Duty : LED duty at emitting Please set up to be ILED < 180[mA] (Duty 25%).
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RPM971-H14
Photo Link Module
Notes 1) VLEDVCC (1pin), VCC (6pin) and VIO (7pin) * There is no problem even if it is supplied separately from each power supply such as a fix voltage power supply and a battery power supply. But, use it in the recommendation power supply voltage range. 2) Caution in designing board lay-out To get maximum potential from RPM971-H14, please keep in mind following instruction. * The line of RXD (4pin) should be connected at backside via through hole close to RPM971-H14 pin lead. Better not to be close to photo diode side (8pin side). This is to minimize feedback supplied to photo diode from RXD. * The parts which generate noise such as DC / DC converter should be one's placed at more than a radius of 1.0cm away from photo diode (8pin side). * As for C1 between 6 - 8 pins, it should be one's placed close to RPM971-H14. 3) Notes * Please be sure to set up the TXD (3pin) input to be "L" (under 0.6V) except transmitting data. (For < 90 sec. ON duty < 25%). * 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 Ver1.3 (Low Power). There might be on error if used by different signal format.
Signaling Rate 2.4kbit/s 9.6kbit/s 19.2kbit/s 38.4kbit/s 57.6kbit/s 115.2kbit/s 0.576Mbit/s 1.152Mbit/s 4.0Mbit/s single pulse double pulse Modulation RZI RZI RZI RZI RZI RZI RZI RZI 4PPM 4PPM Rate Tolerance % of Rate +/- 0.87 +/- 0.87 +/- 0.87 +/- 0.87 +/- 0.87 +/- 0.87 +/- 0.1 +/- 0.1 +/- 0.01 +/- 0.01 Pulse Duration Pulse Duration Pulse Duration Minimum Nominal Maximum 1.41s 1.41s 1.41s 1.41s 1.41s 1.41s 295.2ns 147.6ns 115.0ns 240.0ns 78.13s 19.53s 9.77s 4.88s 3.26s 1.63s 434.0ns 217.0ns 125.0ns 250.0ns 88.55s 22.13s 11.07s 5.96s 4.34s 2.23s 520.8ns 260.4ns 135.0ns 260.0ns
*
Please pay attention to the lens carefully. Dusts or scratch on the lens may effect the characteristics of product, please handle it with care.
4) Eye safe * Eye safe is based on EN60825-1(IEC60825-1 amendment 2), Class1 Eye safe.
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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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