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| RPM841-H11 Photo Link Module IrDA Infrared Communication Module RPM841-H11 RPM841-H11 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) Super small package (W=6.8mm, D=2.44mm, H=1.5mm). 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 Symbol Vmax Vin (3, 4, 5pin) Topr Tstg Limits 7.0 Unit V V C C -0.3 to VCC+0.3 -30 to +85 -40 to +100 This applies to all pins basis ground pins (7pin) Recommended operating conditions (Ta=25C) Parameter Supply voltage LED supply voltage Symbol VCC VLEDVCC Min. 2.4 2.6 Typ. 3.0 3.0 Max. 3.6 5.5 Unit V V 1/9 RPM841-H11 Photo Link Module Block diagram and application circuit 1 LEDA R1 (LEDVCC) 2 TX-RC TX-RC 3 TXD TXD AMP POWER DOWN 4 RXD RXD AMP 5 PWDOWN PWDOWN 6 VCC + 7 VCC AMP GND C1 GND AMP VCC (6pin) and LEDVCC (1pin) can be used on either common power source or different one 2/9 RPM841-H11 Photo Link Module Terminal description Pin No Terminal Circuit 1 Function 1 LEDA LED LED ANODE Terminal Other power source can be used difference between LEDVCC and VCC. VCC 2 TX-RC 240k RC Transmitting Data Input Terminal H : LED Emitting (Remote Control Mode) CMOS Logic Level Input Holding TX-RC='H' status, LED will be turn off approximately 48s. VCC 3 TXD 240k Transmitting Data Input Terminal TXD input at PWDOWN=L H : LED Emitting CMOS Logic Level Input Holding TXD="H" status, LED will be turn off approximately 48s. VCC PWDOWN 4 RXD 300k Receiving Data Output Terminal CMOS Logic Level Output When PWDOWN (5pin)= 'H', the RXD output will be pulled up to VCC at approximately 300k. VCC 5 PWDOWN Power-down Control Terminal H : POWERDOWN L : OPERATION CMOS Logic Level Input When input is 'H', it will stop the receiving circuit and Pin-PD current. 6 VCC Power Supply Terminal For preventing from infection, connect a capacitor between VCC (6pin) and GND (7pin). Ground Termianl Connect to Ground. 7 - GND Shield Case 3/9 RPM841-H11 Photo Link Module Electrical characteristics (Unless otherwise noted, VCC= 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 Optical characteristics (Unless otherwise noted, VCC= 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 25 15 1.42 Typ. 888 - 890 12 50 - 1.63 Max. 892 900 920 28 120 - 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=2.2 R1=2.2 TXD=1.63s pulse input TX-RC=10s pulse input 10% to 90% R1=2.2 R1=2.2 Optical pulse width2 (RC Mode) Rise time / Fall time TWLED2 Tr/Tf 9.5 - - -40 - 500 15 20.5 10 20 - - 4.0 - - 48 10.5 120 25 40 8.1 - - 96 s ns % ns W/cm2 mW/cm2 Optical over shoot Edge jitter Minimum Irradiance in angular Maximum Irradiance in angular Tj Eemin Eemax -15 -15 L L +15 +15 Input half-angle Maximum emitting time D/2 TLEDmax deg s TXD=0 VCC or TX-RC=0 VCC 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. 4/9 RPM841-H11 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 OFF RC IrDA Receiver Operation Condition ON ON ON OFF OFF OFF Notes) Please be sure to set up the TX-RC (2pin) and the TXD (3pin) input to be ''L'' (under 0.3V) except transmitting data (for < 90s. ON Duty 50%). of TX-RC (2pin) and TXD (3pin) in the table above is supposed to be the pulse input. When either TX-RC (2pin) input TXD (3pin) 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 (2pin) and TXD (3pin) are ''L''. Interface operating timing (Emitting side) (1) When TXD output for IrDA and TXD output for controller are different lines. 1 LEDA LEDVCC RC Transmitting TX-RC Controller (BU787X etc) TXD RXD IrDA Controller PWDOWN VCC VCC GND 7 5/9 RPM841-H11 Photo Link Module (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 (2pin) Min 1s Min 1s TXD (3pin) 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. 6/9 RPM841-H11 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 (2pin) Min 1s Min 1s TXD (3pin) 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 (5pin) RXD (4pin) Pull up to VCC at approximately 300k RXD output width is fixed approximately 2.6s. 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. 7/9 RPM841-H11 Photo Link Module Attached components Recommended values Part symbol C1 R1 Recommended value 1F, tantalum or ceramic Ex.) TCFGA1A105M8R (ROHM) 2.25%, 1/8W (VLEDVCC=3V) Notice Bigger capacitance is recommended with much noise from power supply At LED Emitting Duty=25% [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-1.31) / le1-7.2 ILED=Duty x (VLEDVCC-1.31) / (R1+5.8) Duty : LED duty at emitting Please set up to be ILED / Duty < 250[mA] (Duty 25%) At IrDA Mode, LED current is constantly approximately 50mA. (Reference) In case of using R1, typical intensity (le1typ) and maximum intensity (le1max) on axis are described as below. le1typ=280 x (VLEDVCC-1.31) / (R1+5.8) le1max=560 x (VLEDVCC-1.31) / (R1+5.8) Notes 1) LEDVCC (1pin), VCC (6pin) * Other power source can be used difference between LEDVCC and VCC. 2) Caution in designing board lay-out To get maximum potential from RPM841-H11, please keep in mind following instruction. * The line of RXD (4pin) should be connected at backside via through hole close to RPM841-H11 pin lead. Better not to be close to photo diode side (7pin). This is to minimize feedback supplied to photo diode from RXD. * As for C1 between 6-7 pin should be placed close to RPM841-H11. * Better to be placed more than 1.0cm in radius from photo diode (pin7 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 (2pin) and the TXD (3pin) 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. 8/9 RPM841-H11 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 (50x50x1.6mm) mounted. MAXIMUM LED PEAK CURRENT : Iledp (mA) 300 250 200 150 Duty:15% Duty:25% Duty:20% 100 Duty:10% 50 0 -20 0 20 40 60 80 100 AMBIENT TEMPERATURE : Ta (C) External dimensions (Unit : mm) RPM841-H11 6.8 3.4 R0.83 2.38 2.16 R0.9 0.10.1 1.5 0.68 LED 1.1 PD 2.18 6.4 2.09 0.16 0.4 2.44 1pin 0.370.1 7pin 0.95 P0.95x6=5.7 NOTE 1.TOLERANCE:0.2 UNIT:mm ETH774 9/9 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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