IrDA Infrared Communication Module

Transcription

1 Photo Link Module IrDA Infrared Communication Module is an infrared communication module for IrDA er..2 (Low Power). The infrared LED, PIN photo diode, and LSI are all integrated into one single package. This module is designed for low power coumption. The very small package makes it a perfect fit for mobile devices. Features ) Infrared LED, PIN photo diode, LED driver and built-in receiver frequency formation circuit. 2) Applied to SIR (2.4 to 5.2kbps) low power standard. 3) Supply voltage range is from =2. to 3.6, LEDA=2.6 to ) Surface mounting type. 5) Built-in power down function. Applicatio Cellular phones, PDA, DC, digital still cameras, printers, handy terminals and etc. Absolute maximum ratings (Ta=25 C) Parameter Symbol Limits Unit Supply voltage /LEDA 7. Input voltage in(5,6,7pin).3 to +.3 Operation temperature Storage temperature Power dissipation Topr Tstg Pd 25 to 85 3 to 2 C C mw ) This applies to all pi on the basis of ground pi (,4pin). 2) In case of operating environment is over 25 C,.33mW would be reduced per each C stepping up. Recommended operating conditio (Ta=25 C) Parameter Symbol Min. Typ. Max. Units Supply voltage LEDA Rev.B /6

2 Block diagram and application circuit AMP NC AMP AMP POWER DOWN LEDA C (LED) (3pin) and LEDA(8pin) can be used on either common power source or different one. Recommended values Part symbol Recommended Notice C µf, tantalum or ceramic Ex.) TCFGAA5M8R(ROHM) Bigger capacitance is recommended with much noise from power supply. Rev.B 2/6

3 Terminal description Pin No. Terminal Circuiit Funciton 2 NC This terminal must be left open. 3 For preventing from infection, connect a capacitor between (3pin) and (4pin). 4 5 Power-down control terminal H : Power down L : Operation CMOS logic level input When input is H, it will stop the receiving circuit, PINPD current and tramitting LED operation. 6 3K Receiving data output teminal CMOS logic level output When (5pin) = H, the output will be pulled up to at approximately 3kΩ. 7 6k Tramitting data input terminal H : LED ( = L) CMOS logic level input Holding = H status, LED will be turned off at approximately 48µs. LED ANODE terminal Other power source can be used 8 LEDA LED difference between LEDA and. This can be connected to battery kinds of unregulated voltage source by internal cotant current driver. Rev.B 3/6

4 Electrical characteristics (=3, LEDA=3, Ta=25 C) Parameter Symbol Min. Typ. Max. Unit Conditio Coumption current ICC Waiting mode, At no input light Coumption current 2 ICC2..2 mode, At no input light Tramission rate kbps input high voltage PDH.55 input low voltage PDL.55 input high current IPDH.. = [] input low current IPDL.. = [] <Tramitter> input high voltage TXH.55 input low voltage TXL.55 input high current ITXH = [] input low current ITXL.. = [] LED anode current ILEDA 3.5 ma <Receiver> output high voltage RXH.4 IRXH= 2 output low voltage RXL.4 IRXL= 2 output rise time trr 35 CL=5pF output fall time tfr 35 CL=5pF output pulse width tw µs CL=5pF, 2.4 to 5.2kbps Receiver latency time trt 2 µs Optical characteristics (=3, LEDA=3, Ta=25 C) Peak wave length Inteity Half-angle Rise time / Fall time Optical over shoot Edge jitter Maximum emitting time Parameter Symbol Min. Typ. Max. Unit Conditio λp IE θl / 2 Tr / Tf TLEDmax. This product is not designed for protection agait radioactive rays. 2. This product does not include laser tramitter. 3. This product include one PIN photo diode. 4. This product dose not include optical load. Tj nm ±8 26 mw / Sr Opticcal pulse width TWLED µs ±3 µs =.63µs pulse input % to 9% Minimum irradiance in angular range Eemin 6.8 µw / cm 2 5 < θl < 5 Maximum irradiance in angular range Eemax 5 mw / cm 2 5 < θl < 5 Half-angle θd / 2 ±5 C C % 5 < θl < 5 = Rev.B 4/6

5 Timing chart (Emitting side) (7pin) less than 48 µs more than 48 µs (emitting) (emitting) (emitting) Internal LED (Light output) approximately 48 µs (Detecting side) Light input less than 2.3 µs more than 2.3 µs (6pin) approximately 2.3 µs pull up to at approximately 3 kω (5pin) Notes ) LEDA (8pin) and (3pin) Other power source can be used difference between LEDA and. 2) Caution in designing board lay-out To get maximum potential from, please keep in mind following itruction. The line of (6pin) should be connected at backside via through hole close to pin lead. Better not to be close to photo diode side (pin). This is to minimize feedback supplied to photo diode from. Better to be placed more than.cm in radius from photo diode (pin side) and also away from the parts which generate noise, such as DC / DC converter. As for C between 3-4pin should be placed close to. 3) Notes Please be sure to set up the (7pin) input to be L (under.55) except tramitting data (for<9 s, ON duty<2%) Power down current might increase if exposed by strong light (ex. direct sunlight) at power down mode. Please use by the signal format which is specified by lrda er.2 (2.4k to 5.2kbps). There might be on error if used by different signal format. 4) Eye Safe IEC825- (EN6825-) Class Eye Safe. Rev.B 5/6

6 Dimeio Diagram (Unit : mm) 7.6 R R. 2 Pin PD LED ±..95 P.95 7= RSLP8 Rev.B 6/6

7 Appendix Notes No technical content pages of this document may be reproduced in any form or tramitted by any mea without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specificatio for the product described in this document are for reference only. Upon actual use, therefore, please request that specificatio to be separately delivered. Application circuit diagrams and circuit cotants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditio when designing circuits and deciding upon circuit cotants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustratio of such devices and not as the specificatio 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 licee 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, communicatio 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 itruments, traportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to coult with our sales representative in advance. About Export Control Order in Japan Products described herein are the objects of controlled goods in Annex (Item 6) 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 Weapo of Mass Destruction. Appendix-Rev.