IrDA Infrared Communication Module

Transcription

1 Photo Link Module IrDA Infrared Communication Module is an infrared communication module for IrDA er. 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 coumption. The very small package makes it a perfect fit for mobile devices. Also it provides the capability of IR remote control tramission for universal remote control applicatio. 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 (.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. 6) Infrared remote control tramission driver built-in. Applicatio Cellular phone, PDA, DC, Digital still camera, Printer, Handy terminal etc. Absolute maximum ratings (Ta=25 C) Parameter Symbol Limits Unit Supply voltage Input voltage cc / LEDA / in(3,4,5pin) to +.3 Operation temperature Storage temperature Topr Tstg 25 to 85 3 to 1 1) This applies to all pi basis ground pin (8pin). C C Recommended operating conditio Parameter Symbol Min. Typ. Max. Unit CC Supply voltage LEDA CC 1/9

2 Terminal description Pin No Terminal Circuit Function 1 LEDA 1 2 LED LED Anode Terminal LED drive power supply. Other power source can be used difference between LEDCC and CC. 2 LEDC LED Cathode Terminal 3 6k Tramitting Data Input Terminal H:LED radiant (='L') CMOS Logic Level Input. Holding ="H"status, LED will be turn off approximately 48 µs. 4 3k Receiving Data Output Terminal When (5pin)='H', the output will be pulled up to at approximately 3 kω. 5 /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, PinPD current and tramitting LED operation. 6 CC CC Supply voltage for Traceiver circuits. 7 8 GND GROUND Supply voltage for I / O pi (,,). Shield Case Connect to Ground. 2/9

3 Electrical characteristics (Unless otherwise noted, CC=3, LED CC =3, =3, Ta=25 C) Parameter Symbol Min. Typ. Max. Unit Conditio Coumption current 1(SIR / MIR mode) Coumption current 2(FIR mode) input high voltage input low voltage input high current input low current LED anode current output high voltage output low voltage output rise time output fall time output pulse width(sir) Receiver latency time ICC1 ICC2 ICC3 Coumption current 3(at ).1.2 µa Tramission rate.96 4 Mbps input high voltage input low voltage input high current input low current PDH PDL IPDH IPDL 2/ / µa µa < Tramitter > < Receiver > TXH TXL ITXH ITXL ILED1 RXH RXL trr tfr tws twf1 twf2 trt 4 4 2/ µa =, At no input light 1 16 µa =, At no input light / µa µa µs µs =, At no input light =1.7 to 3.6 ( < CC) = = =1.7 to 3.6 ( < CC) = = IRXH= 2µA IRXL=2µA CL=15pF CL=15pF CL=15pF, 9.6k to kbps, duty19% output pulse width(mir1) twm CL=15pF,.576 Mbps, duty25% output pulse width(mir2) twm CL=15pF, Mbps, duty25% output pulse width(fir1) output pulse width(fir2) ma CL=15pF, 4 Mbps(125 pulse) CL=15pF, 4 Mbps(25 pulse) Optical characteristics (Unless otherwise noted, CC=3, LED CC =3, =3, Ta=25 C) Parameter Symbol Min. Typ. Max. Unit Conditio Peak wave length λp nm Inteity IE 25 1 mw / sr 15 deg < θ L < 15 deg Halfangle θl / 2 Rise time / Fall time Optical over shoot Edge jitter Optical pulse width(mir) Optical pulse width(fir) Minimum irradiance in angular 1 Input halfangle Maximum emitting time Tr / Tf θd / 2 TLEDmax 1. This product is not designed for protection agait radioactive rays. 2. This product dose not include laser tramitter. 3. This product includes one PIN photo diode. 4. This product dose not include optical load. Tj Eemin1 ± Minimum irradiance in angular 2 Eemin2 2 Maximum irradiance in angular Eemax 5 ± deg % µw / cm 2 µw / cm 2 mw / cm 2 deg µs 1% to 9% TweM t=217 TweF t= deg < θ L < 15 deg, < 115.2kbps 15 deg < θ L < 15 deg, 115.2kbps 15 deg < θ L < 15 deg = < 3/9

4 Timing chart 1. Mode Setting (SIR / MIR / FIR) With there is a need for mode switch according to communication rate. For the mode setting, there are /Mode and. Please see below diagram for the set up of mode. (a) FIR Mode (b) SIR / MIR Mode / Mode / Mode ts = > 2 ts = > 2 tdmax=2µs tdmax=2µs Mode FIR Mode (4Mbps) Mode SIR / MIR Mode (9.6k-1.152Mbps) Fig Remote control tramitting When remote control signal is input to the terminal, remote control is tramitted. 3. Timing chart (use example) (a) Emitting When a pulse is inputted to terminal, LED is emitting, and a signal is tramitted. But, when H condition follows terminal, LED tur off the lights in the range of TLEDmax. less than TLEDmax more than TLEDmax (IrDA/RC emitting) (IrDA/RC emitting) (IrDA/RC emitting) LED emitting TLEDmax 4/9

5 (b) Detecting When it is received an optical signal, a signal outputs from 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 (.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 2.3µs more than 1.41µS more than 2.3µs approximately 2.3µs 3kΩ pull up 2 MIR mode (output example) Light input kΩ pull up 3 FIR mode (output example) Light input kΩ pull up 5/9

6 Dimeio (Unit : mm) R1. 8. R LED A PinPD.15± ± A Part Size (Shield Case underside size) 1.37± P.95 7= ±.1 NOTE 1. TOLERANCE : ±.2mm 2. COPLANARITY :.1mmMAX (.13).68±.1 UNIT : mm ETH871 6/9

7 AMP Photo Link Module Block diagram and application circuit 1 LEDA LEDCC AMP AMP POWER DOWN /Mode LEDC /Mode CC GND C1 Tramitter signal Receiver signal IrDA/RC Controller CC GND Attached components Part symbol C1 Recommended value 6.8µF, Ceramic or tantalum Ex.)TCFGA1A685M8R(ROHM) Notice Bigger capacitance is recommended with much noise from power supply. 7/9

8 Notes 1) LED CC (1pin), CC (6pin) and (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. ( < cc +.3) But, use it in the recommendation power supply voltage range. 2) Caution in designing board lay-out To get maximum potential from, please keep in mind following itruction. The line of (4pin) should be connected at backside via through hole close to pin lead. Better not to be close to photo diode side (8pin side). This is to minimize feedback supplied to photo diode from. The parts which generate noise such as DC / DC converter should be one s placed at more than a radius of 1.cm away from photo diode (8pin side). As for C1 between 6-8 pi, it should be one s placed close to. 3) Notes Please be sure to set up the (3pin) input to be L (under.6) except tramitting data. (For < 9µ 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 er1.3 (Low Power). There might be on error if used by different signal format. <Communication rate and pulse continuous time> Signaling Rate Modulation Rate Tolerance % of Rate Pulse Duration Minimum Pulse Duration Nominal Pulse Duration Maximum 9.6kbit/s RZI +/ µs 19.53µs 22.13µs 19.2kbit/s RZI +/ µs 9.77µs 11.7µs 38.4kbit/s RZI +/ µs 4.88µs 5.96µs 57.6kbit/s RZI +/ µs 3.26µs 4.34µs 115.2kbit/s RZI +/ µs 1.63µs 2.23µs.576Mbit/s RZI +/ Mbit/s RZI +/ single pulse 4PPM +/ Mbit/s double pulse 4PPM +/ Please pay attention to the le carefully. Dusts or scratch on the le may effect the characteristics of product, please handle it with care. 4) Eye safe Eye safe is based on EN6825-1(IEC amendment 2), Class1 Eye safe. 8/9

9 AMP Photo Link Module 5) Reference Please iert external resistance (R1, 1/4W) between LED anode terminal and LEDcc to limit the LED average coumption current for current limitation. In case of using R1, formula is as follows : LED resistance value : R1 [Ω], LED average coumption current : ILED [ma], Supply voltage : LEDCC [], minimum necessary of irradiant inteity Ie1 [mw/sr] R1 = 11 (LEDCC 1.45) / Ie1 5 [Ω] ILED = Duty (LEDCC 1.36) / (R1+4) [A] Duty : LED duty at emitting Please set up to be ILED < 18[mA] (Duty 25%). 1 LEDA R1 LEDCC AMP AMP POWER DOWN /Mode LEDC /Mode CC GND C1 /Mode CC GND 9/9

10 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 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 Weapo of Mass Destruction. Appendix1-Rev1.1