RPM972-H14 Photo Link Module IrDA Infrared Communication Module RPM972-H14 RPM972-H14 is an infrared communication module for IrDA Ver. 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 consumption. The very small package makes it a perfect fit for mobile devices. Also it provides the capability of IR remote control transmission for universal remote control applications. zFeatures 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 (0.576M, 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 transmission driver built-in. zApplications Cellular phone, PDA, DVC, Digital still camera, Printer, Handy terminal etc. zAbsolute maximum ratings (Ta=25°C) Parameter Supply voltage Input voltage Symbol Limits Unit 6.5 ∗1 Vcc / VLEDA / VIO Vin(3,4,5pin) V −0.3 to VIO+0.3 V Operation temperature Topr −25 to 85 °C Storage temperature Tstg −30 to 100 °C ∗1) This applies to all pins basis ground pin (8pin). zRecommended operating conditions Parameter Supply voltage Symbol Min. Typ. Max. Unit VCC 2.4 3.0 3.6 V VLEDA 2.7 3.0 5.5 V VIO 1.7 3.0 VCC V 1/9 RPM972-H14 Photo Link Module zTerminal description Pin No Terminal Circuit Function LED Anode Terminal LED drive power supply. Other power source can be used difference between LEDVCC and VCC. 1 1 LEDA 2 LEDC LED 2 LED Cathode Terminal VIO 3 TXD 600k Receiving Data Output Terminal VIO VIO PWDOWN 300k 4 Transmitting Data Input Terminal H:LED radiant (PWDOWN='L') CMOS Logic Level Input. Holding TXD="H"status, LED will be turn off approximately 48 µs. When PWDOWN(5pin)='H', the RXD output will be pulled up to VIO at approximately 300 kΩ. RXD VIO Power-down Control and Mode SettingTerminal H: POWERDOWN 5 PWDOWN /Mode L : OPERATION CMOS Logic Level Input. When input is "H", it will stop the receiving circuit, Pin−PD current and transmitting LED operation. 6 VCC VCC Supply voltage for Transceiver circuits. 7 VIO VIO Supply voltage for I / O pins (PWDOWN,RXD,TXD). 8 GND GROUND − Shield Case Connect to Ground. 2/9 RPM972-H14 Photo Link Module zElectrical characteristics (Unless otherwise noted, VCC=3V, VLEDVCC=3V, VIO=3V, Ta=25°C) Parameter Symbol Min. Consumption current 1(SIR / MIR mode) ICC1 Consumption current 2(FIR mode) ICC2 Consumption current 3(at PWDOWN) ICC3 Transmission rate Typ. Max. Unit Conditions 400 800 1600 µA PWDOWN=0V, At no input light 400 1000 1600 µA PWDOWN=0V, At no input light − 0.01 0.2 µA PWDOWN=VIO, At no input light 0.0096 − 4 Mbps PWDOWN input high voltage VPDH 2/3∗VIO − VIO V PWDOWN input low voltage VPDL 0 − 1/3∗VIO V PWDOWN input high current IPDH −1.0 0 1.0 µA PWDOWN=VIO PWDOWN input low current IPDL −1.0 0 1.0 µA PWDOWN=0V TXD input high voltage VTXH 2/3∗VIO − VIO V TXD input low voltage VTXL 0 − 1/3∗VIO V VIO=1.7 to 3.6 V (VIO < − VCC) TXD input high current ITXH 2.5 5 10 µA TXD=VIO TXD input low current ITXL −1.0 0 1.0 µA TXD=0V ILED1 180 250 300 mA RXD output high voltage VRXH VIO−0.4 − VIO V IRXH= −200µA RXD output low voltage VRXL 0 − 0.4 V IRXL=200µA tRR − 20 − ns CL=15pF VIO=1.7 to 3.6 V (VIO < − VCC) < Transmitter > LED anode current < Receiver > RXD output rise time tFR − 20 − ns CL=15pF twRXDS 1.0 2.3 4.0 µs CL=15pF, 9.6k to 115.2 kbps, duty19% RXD output pulse width(MIR1) twRXDM1 200 434 800 ns CL=15pF, 0.576 Mbps, duty25% RXD output pulse width(MIR2) twRXDM2 100 217 500 ns CL=15pF, 1.152 Mbps, duty25% RXD output pulse width(FIR1) twRXDF1 85 125 165 ns CL=15pF, 4 Mbps(125ns pulse) RXD output pulse width(FIR2) twRXDF2 195 250 290 ns CL=15pF, 4 Mbps(250ns pulse) tRT − 100 200 µs RXD output fall time RXD output pulse width(SIR) Receiver latency time zOptical characteristics (Unless otherwise noted, VCC=3V, VLEDVCC=3V, VIO=3V, Ta=25°C) Parameter Symbol Min. Typ. Max. Peak wave length λP Intensity IE Half−angle Rise time / Fall time 880 890 900 nm 25 100 − mW / sr θL / 2 ±15 − − deg Tr / Tf − − 40 ns Tj − − 25 % −25 − 25 ns Optical over shoot Edge jitter Unit Conditions −15 deg < −θL< − 15 deg 10% to 90% Optical pulse width(MIR) TweM 172 217 256 ns tTXD=217ns Optical pulse width(FIR) TweF 115 125 135 ns tTXD=125ns Eemin1 − − 8 µW / cm2 −15 deg < − θL< − 15 deg, < − 115.2kbps Minimum irradiance in angular 2 Eemin2 − − 20 µW / cm2 −15 deg < − θL< − 15 deg, < 115.2kbps Maximum irradiance in angular Eemax 500 − − mW / cm2 −15 deg < − θL< − 15 deg θD / 2 ±15 − − deg TLEDmax 16 48 120 µs Minimum irradiance in angular 1 Input half−angle Maximum emitting time TXD=VIO 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. 3/9 RPM972-H14 Photo Link Module zTiming chart 1. Mode Setting (SIR / MIR / FIR) With RPM972-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 PWDOWN / Mode ts > = 200ns ts > = 200ns TXD TXD tdmax=200µs tdmax=200µs FIR Mode (4Mbps) Mode SIR / MIR Mode (9.6k-1.152Mbps) Mode Fig. 1 2. Remote control transmitting When remote control signal is input to the TXD terminal, remote control is transmitted. 3. Timing chart (use example) (a) Emitting When a pulse is inputted to TXD terminal, LED is emitting, and a signal is transmitted. But, when “H” condition follows TXD terminal, LED turns off the lights in the range of TLEDmax. TXD less than TLEDmax (IrDA/RC emitting) more than TLEDmax (IrDA/RC emitting) (IrDA/RC emitting) LED emitting TLEDmax PWDOWN 4/9 RPM972-H14 Photo Link Module (b) Detecting When it is received an optical signal, a signal outputs from RXD 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 (0.576M, 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 RXD 300kΩ pull up approximately 2.3µs PWDOWN 2 MIR mode (output example) Light input 434ns 217ns RXD 300kΩ pull up 434ns 217ns PWDOWN 3 FIR mode (output example) Light input 125ns 250ns 125ns 250ns RXD 300kΩ pull up PWDOWN 5/9 RPM972-H14 Photo Link Module zDimensions (Unit : mm) R1.0 R1.1 8.0 2.2 2.2 LED 0.15±0.1 PinPD 1.0 1.1 0.78 1.4 0.76 2.59 0.15±0.1 2.8 4.0 2.67 2.9 A 2.2 8 0.75 1 A Part Size (Shield Case underside size) 0.37±0.1 0.95 P0.95×7=6.65 0.48 0.6±0.1 0.6 0.68±0.1 (0.13) NOTE 1. TOLERANCE : ±0.2mm 2. COPLANARITY : 0.1mmMAX UNIT : mm ETH871 6/9 RPM972-H14 Photo Link Module zBlock diagram and application circuit LEDA 2 1 LEDVCC LEDC Transmitter signal 3 TXD Receiver signal IrDA/RC Controller PWDOWN/Mode 5 POWER DOWN /Mode VCC AMP 6 AMP 4 RXD VCC AMP 7 C1 VIO VIO 8 GND GND zAttached components Part symbol C1 Recommended value Notice 6.8µF, Ceramic or tantalum Ex.)TCFGA1A685M8R(ROHM) Bigger capacitance is recommended with much noise from power supply. 7/9 RPM972-H14 Photo Link Module zNotes 1) VLEDVCC (1pin), VCC (6pin) and VIO (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. (VIO < Vcc + 0.3V) But, use it in the recommendation power supply voltage range. 2) Caution in designing board lay-out To get maximum potential from RPM972-H14, please keep in mind following instruction. • The line of RXD (4pin) should be connected at backside via through hole close to RPM972-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 one’s placed at more than a radius of 1.0cm away from photo diode (8pin side). • As for C1 between 6 - 8 pins, it should be one’s placed close to RPM972-H14. 3) Notes • Please be sure to set up the TXD (3pin) input to be “L” (under 0.6V) except transmitting data. (For < 90µ 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). There might be on error if used by different signal format. <Communication rate and pulse continuous time> Modulation Rate Tolerance % of Rate 9.6kbit/s RZI +/− 0.87 1.41µs 19.53µs 22.13µs 19.2kbit/s RZI +/− 0.87 1.41µs 9.77µs 11.07µs Signaling Rate 38.4kbit/s RZI +/− 0.87 1.41µs 4.88µs 5.96µs 57.6kbit/s RZI +/− 0.87 1.41µs 3.26µs 4.34µs 115.2kbit/s RZI +/− 0.87 1.41µs 1.63µs 2.23µs RZI +/− 0.1 295.2ns 434.0ns 520.8ns 260.4ns 0.576Mbit/s RZI +/− 0.1 147.6ns 217.0ns single pulse 4PPM +/− 0.01 115.0ns 125.0ns 135.0ns double pulse 4PPM +/− 0.01 240.0ns 250.0ns 260.0ns 1.152Mbit/s 4.0Mbit/s • Pulse Duration Pulse Duration Pulse Duration Minimum Nominal Maximum Please pay attention to the lens carefully. Dusts or scratch on the lens may effect the characteristics of product, please handle it with care. 4) Eye safe • Eye safe is based on EN60825-1(IEC60825-1 amendment 2), Class1 Eye safe. 8/9 RPM972-H14 Photo Link Module 5) Reference • Please insert external resistance (R1, 1/4W) between LED anode terminal and VLEDVcc to limit the LED average consumption current for current limitation. In case of using R1, formula is as follows : LED resistance value : R1 [Ω], LED average consumption current : ILED [mA], Supply voltage : VLEDVCC [V], minimum necessary of irradiant intensity Ie1 [mW/sr] R1 = 110 × (VLEDVCC − 1.45) / Ie1 −5 [Ω] ILED = Duty × (VLEDVCC − 1.36) / (R1+4) [A] Duty : LED duty at emitting 1 LEDA 2 ∗ Please set up to be ILED < 180[mA] (Duty ≤ 25%). LEDC R1 5 AMP VCC TXD RXD PWDOWN /Mode VCC 7 C1 VIO 8 AMP RXD PWDOWN/Mode POWER DOWN /Mode 6 AMP 4 3 TXD LEDVCC GND VIO GND 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