rpm872-h12 photo link module rev . a 1/6 irda infrared communication module rpm872-h12 rpm872-h12 is an infrared communication module for irda v e r . 1.2 (low pow e r). t he in frared led, pin photo diode, lsi are all integrated into a single p a ckage. t h is m odule is designed w i th pow er dow n function and low current consumption at st and-by mode. t he ultra small p a ckage makes it a perfect fit for mobile devices. z f eatu r es 1 ) i n fra r e d le d, pin ph ot o di o de, le d dr iv er & re ce iv er fr eq ue nc y fo rm ati on c i rc uit b u ilt i n . impr ov em ent of emi no is e protection because of shield case. 2) applied to sir (2.4 to 1 15.2kbp s) 3) surface mount ty pe. 4) pow e r dow n function built in. 5) low volt age operation as 1.5v of interface terminals to controller (t xd, rxd, pow e r dow n). z a pplic a t ions mobile phone, pda, dvc, digit al s t ill ca mera, printer , handy t e rminal etc. z a b solute maximum ratings (t a= 25 c) parameter symbol limits unit supply voltage v max 7.0 ? 1 ? 30 to + 85 ? 30 to + 100 v v ? 0.3 to v io + 0.3 operation temperature storage temperature input voltage topr tstg mw 100 ? 2 power dissipation pd v in (5, 6, 7pin) c c ? 1 this applies to all pins basis ground pins (1.4pin) ? 2 in case operating environment is over 25 c, 1.33mw would be reduced per each 1 c stepping up. z re c o mme nde d ope ra ting c onditions (t a= 25 c) parameter symbol min. typ. max. unit supply voltage v cc 3.0 v 2.0 3.6 v leda 3.0 v 2.6 5.5 v io 3.0 v 1.5 v cc
rpm872-h12 photo link module rev . a 2/6 z bloc k dia g ra m a nd a pplic a t ion c i rc uit amp 1 8 76543 2 amp amp power down v cc v io v cc gnd c1 gnd v io gnd pwdown rxd txd leda pwdown rxd txd (ledv cc ) v cc (3pin) and v leda (8pin) can be used on either common power source or different one +
rpm872-h12 photo link module rev . a 3/6 z t e rmin a l d escrip tio n terminal circuit function pin no 1, 4 gnd gnd pin1 and pin4 must be connected to the ground. v io supply voltage for i/o pins. (pwdown, rxd, txd) power-down control terminal cmos logic level input when input is h, it will stop the receiving circuit, pin-pd current and transmitting led operation. h : powerdown l : operation receiving data output terminal cmos logic level input when pwdown (5pin)=h, the rxd output will be pulled up to v io at approximately 300k . transmitting data input terminal h : led (pwdown=l) cmos logic level output holding txd="h" status, led will be turn off approximately 48 s. led anode terminal other power source can be used difference between ledv cc and v cc . this can be connected to battery kinds of unegulated constant source by internal constant current driver. 2v io pwdown rxd txd leda 3 5 6 7 8 shield case connect to ground. ? v cc v cc supply voltage for transceiver circuits. for preventing from infection, connect a capacitor between v cc (3pin) and gnd (4pin). v io v io 600k led v io v io 300k pwdown
rpm872-h12 photo link module rev . a 4/6 z electrical ch aracteristics (unless otherw i se noted, v cc =3 v , v led a =3 v , v io =3 v , t a =2 5 c) parameter symbol min. typ. max. unit conditions consumption current1 i cc 1 i cc 2 vpdh vpdl ipdh ipdl 75 a pwdown=0v at no input light pwdown=v io at no input light pwdown = v io [v] consumption current2 transmission rate pwdown input high voltage pwdown input low voltage pwdown input high current pwdown input low current txd input high voltage txd input low voltage rxd output high voltage rxd output rise time rxd output fall time rxd output pulse width receiver latency time rxd output low voltage txd input high current txd input low current led anode current ? 0.01 ? 0 ? 2.4 ? ? 2/3 ? v io 1.2 99 a 0.2 kbps 115.2 v v v io 1/3 ? v io v io ? 1.2 vtxh vtxl itxh itxl ileda vrxh vrxl trr tfr trt twrxd pwdown = 0 [v] txd = v io [v] txd = 0 [v] 0 ? 1.0 2/3 ? v io 1.2 0 2.5 ? 1.0 ? 0 ? ? 1.5 ? v io ? 0.4 0 ? 1.0 ? ? 5 0 30.5 ? ? 35 35 2.3 100 a 1.0 a 1.0 v v a a ma v v ns ns s s ? 1/3 ? v io v io ? 1.2 10 1.0 ? v io 0.4 ? ? 4.2 200 irxh = ? 200 a irxl = 200 a c l = 15pf c l = 15pf c l = 15pf, 2.4 to 115.2kbps v io =1.8 to 3.6 [v] v io =1.5 to 1.8 [v] v io =1.8 to 3.6 [v] v io =1.5 to 1.8 [v] v io =1.8 to 3.6 [v] v io =1.5 to 1.8 [v] v io =1.8 to 3.6 [v] v io =1.5 to 1.8 [v] z op tical ch aracteristics (unless otherw i se noted, v cc =3 v , v led a =3 v , v io =3 v , t a =2 5 c) parameter symbol min. typ. max. unit conditions peak wave length 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. p ie1 l/2 d/2 tledmax tr/tf tj ee 870 nm ? 15 ? l 15 ? 15deg l + 15deg txd = v io txd = 1.63 s pulse input 10% to 90% intensity1 half-angle rise time / fall time optical over shoot edge jitter irradiance in angular input half-angle maximum emitting time 850 10 4.0 ? 18 ? ? 900 mw/sr 26 mw/cm 2 deg ns deg s 30 100 ? ? ? ? ? 48 ? 40 0.0068 15 10 % 25 ns 40 500 ? 120 twled optical pulse width 1.63 1.42 s 2.02
rpm872-h12 photo link module rev . a 5/6 z t i min g ch art less than 48 s (emitting) more than 48 s approximately 48 s less than 2.3 s more than 2.3 s approximately 2.3 s approximately 2.3 s pull up to v io at approximately 300k ? (emitting) (emitting) (emitting side) (detecting side) txd (7pin) internal led (light output) light input rxd (6pin) pwdown (5pin) z a t t a c h e d c o mpone nt s recommended values part symbol c1 recommended value notice 1 f, tantalum or ceramic ex.) tcfga1a105m8r (rohm) bigger capacitance is recommended with much noise from power supply
rpm872-h12 photo link module rev . a 6/6 z no tes 1) v led a (8pin), v cc (3pin) and v io (2pin) ? other pow er source can be used dif f erence betw een v led a and v cc and v io . (v io < v cc + 0.3v) 2) caution in designing board lay - out t o get maximum potential from rpm872-h12, please keep in mind follow i ng instruction. ? t he line of rx d (6pin) should be connect ed at backside via through hole close to rpm872-h12 pin lead. better not to be close to photo diode side (1pin). ? t h is is to minimize feedback supplied to photo diode from rxd. ? as for c1 betw een 3-4 pin should be placed close to rpm872-h12. ? better to be placed more than 1.0cm in radius from photo diode (pin1 side) and also aw ay from the p a rt s w h ich generates noise, such as dc / dc converter . 3) others ? please be sure to set up the t x d (7pin) input to be ?l? (under 0.3v) except transmitting dat a (for < 90 s, on duty < 20%). ? pow e r dow n current might increase if exposed by str ong light (ex. direct sun light) at pow erdow n mode. ? please use by the signal format w h ich is specified by irda v e r1.2 (low pow e r). ? t here might be on error if used by dif f erent signal format. ? please p a y attention to the lens carefully . dust s of scratch on the lens may ef fect the characteristics of product. please handle it w i th care. 4) ey e safe ? iec825-1 (en60825-1) class 1 ey e safe. z ex te rna l dime ns ions (unit : mm) unit:mm note tolerance 0.2mm coplanarity:0.1mmmax pinpd led 8 1 eth450 0.6 2.4 3.0 8.0 3.0 2.8 5.6 0.56 0.37 0.1 0.6 0.1 0.68 0.1 0.6 0.1 7.6 p0.95 7 = 6.65 a 2.49 2.72 2.0 0.15 0.1 1.75 0.84 0.1 0.75 3.0 a part size (shield case underside size)
appendix appendix1-rev1.1 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. 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. 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.
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