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RPM970-H14
Photo Link Module
IrDA Infrared Communication Module
RPM970-H14
RPM970-H14 is an infrared communication module for IrDA Ver. 1.3 (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 (0.576,1.152Mbps) 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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RPM970-H14
Photo Link Module
Block diagram and application circuit
R1
LEDA
1
LEDVCC
2
LEDC
TXD TXD
3
RXD
4
RXD
POWER DOWN /Mode
PWDOWN/Mode PWDOWN /Mode VCC C1
7 5
AMP
VCC
AMP
6
VIO VIO
AMP
GND
8
GND
VCC(6pin) and LEDVCC(1pin) can be used on either common power source or different one.
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RPM970-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). LED Cathode Terminal
1
1 LEDA
LED
2
2
LEDC VIO
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
3
TXD
600k
VIO PWDOWN
300k
VIO
When PWDOWN(5pin)='H', the RXD output will be pulled up to VIO at approximately 300 k.
4
RXD
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).
5
6
VCC
7
8
VIO
GND
GROUND
-
Shield Case
Connect to Ground.
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RPM970-H14
Photo Link Module
Electrical characteristics (Unless otherwise noted, VCC=3V, VLEDVCC=3V, VIO=3V, Ta=25C)
Parameter Consumption current 1 Consumption current 2 Transmission rate(SIR / MIR mode) Transmission rate(FIR mode) 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 1 LED anode current 2 < Receiver > RXD output high voltage RXD output low voltage RXD output rise time RXD output fall time RXD output pulse width(FIR1) RXD output pulse width(FIR2) Receiver latency time VRXH VRXL tRR tFR twRXDF1 twRXDF2 tRT VIO-0.4 0 - - 228 85 195 - - - 20 20 380 125 250 100 VIO 0.4 - - 532 165 290 200 V V ns ns ns ns ns s IRXH= -200A IRXL=200A CL=15pF CL=15pF CL=15pF, 9.6k to 1.152 Mbps CL=15pF, 4 Mbps(125ns pulse) CL=15pF, 4 Mbps(250ns pulse) VTXH VTXL ITXH ITXL ILED1 ILED2 2/3VIO 0 2.5 -1.0 - 180 - - 5 0 170 260 VIO 1/3VIO 10 1.0 - 400 V V A A mA mA VIO=1.7 to 3.6 V (VIO < VCC) - TXD=VIO TXD=0V R1=5.6 R1=5.6, VLEDVCC=5.5V VPDH VPDL IPDH IPDL Symbol ICC1 ICC2 Min. 400 - 9.6 - 2/3VIO 0 -1.0 -1.0 Typ. 800 0.01 - 4 - - 0 0 Max. 1600 0.2 1152 - VIO 1/3VIO 1.0 1.0 Unit A A kbps Mbps V V A A VIO=1.7 to 3.6 V (VIO < VCC) - PWDOWN=VIO PWDOWN=0V Conditions PWDOWN=OV, At no input light PWDOWN=VIO, At no input light
RXD output pulse width(SIR / MIR) twRXDS
Optical characteristics (Unless otherwise noted, VCC=3V, VLEDVCC=3V, VIO=3V, Ta=25C)
Parameter Peak wave length Intensity1
Half-angle
Symbol P IE1
L / 2
Min. 850 25
-
Typ. 870 63 18
-
-
Max. 900 200
- 40 25
25
256 135
Unit nm mW / Sr deg
ns %
Conditions
-15 deg < L < 15 deg - - R1=5.6
Rise time / Fall time Optical over shoot Edge jitter
Optical pulse width(MIR) Optical pulse width(FIR)
Tr / Tf
-
-
-25
172 115
10% to 90%
Tj
TweM TweF
-
217 125
ns
ns ns tTXD=217ns tTXD=125ns
-15 deg < L < 15 deg - -
Minimum irradiance in angular
Maximum irradiance in augular
Eemin
Eemax
-
9 -
- 48
20
-
-
W / cm2
500 15 16
mW / cm2 -15 deg < L < 15 deg - - deg s TXD=VIO
Input half-angle Maximum emitting time
D / 2 TLEDmax
120
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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RPM970-H14
Photo Link Module
Timing chart Mode Setting (SIR / MIR / FIR) With RPM970-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
Mode
FIR Mode (4Mbps)
Mode
SIR / MIR Mode (9.6k-1.152Mbps)
Fig. 1
Attached components
Part symbol C1 R1 Recommended value 6.8F, Ceramic or tantalum Ex.)TCFGA1A685M8R (ROHM)
5.6 5%, 1/4W (VLEDVCC=3.0V)
Notice Bigger capacitance is recommended with much noise from power supply More than 50cm distance, more than 10W/cm^2 at detecting side. (vs ver1.1)
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] necessary d[cm] (Including LED's distribution within 15 deg) R1=T (VLEDVCC-1.45) / d2 - 5 [] ILED=Duty (VLEDVCC-1.36) / (R1+4) [A] Duty : LED duty at emitting, T=17000
At LED / Duty<180mA
+
+
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RPM970-H14
Photo Link Module
Notes 1) VLEDVCC (1pin), VCC (6pin) and VIO (7pin) * Other power source can be used difference between VLEDA and VCC and VIO. (VIO < VCC + 0.3V) 2) Caution in designing board lay-out To get maximum potential from RPM970-H14, please keep in mind following instruction. * The line of RXD (4pin) should be connected at backside via through hole close to RPM970-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 placed at more than a radius of 1.0cm away from photo diode (8pin side). * As for 1 between 6 - 8 pins, it should be placed close to RPM970-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) except 4 Mbps. There might be on error if used by different signal format. 4) Eye safe * EN60825-1(IEC60825-1 amendment 2), Class1 Eye safe. 5) LEDVCC voltage derating and ambient temperature The relation among LEDVCC peak voltage, LED load resistance (R1) and maximum ambient temperature (Tamax) is shown below. We recommend you to use within the range as indicated in below. a) When LED on-duty 25%
7 6 5
Duty=25%
22 15
4.7 5.6
LEDVCC (V)
4 3 2 1 0 -25
6.8 8.2 10
0
25
50
75
100
Ambient Temperature Ta (C)
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RPM970-H14
Photo Link Module
External dimensions (Unit : mm)
R1.0 8.0
R1.1 2.2
2.2
LED
1.1 1.4 2.8 4.0 A
PinPD
1.0
0.78
0.150.1 0.76 2.59
0.150.1 2.9
2.67
A Part Size (Shield Case underside size)
0.370.1 0.95 P0.95x7=6.65 0.6 0.48
0.60.1
(0.13)
0.680.1
NOTE 1.TOLERANCE : 0.2mm 2.COPLANARITY : 0.1mmMAX UNIT : mm ETH396
0.75
1
8
2.2
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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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