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tfdu4102/tfds4402 vishay semiconductors rev. a1.5, 13-oct-00 1 (11) www.vishay.com document number 82531 integrated low profile transceiver module for telecom applications irda standard description the tfdu4102 and tfds4402 are ideal transceivers for applications in telecommunications like mobile phones and pagers. the device is mechanically designed for low profile applications covering the full irda range of one meter. the infrared transceiver is compatible to the irda ? irphy specification version 1.3 up to a data rate of 115.2 kbit/s. at lower operating voltages up to 3.3 v the transceiver can be operated without external current limiting resistor to achieve full sir compliance (range > 1 m in full 15 cone). vishay semiconductors tfds4402 transceiver represents a novel package option with the same chipset as tfdu4202 enabling a minimized package height over the pcb of only 1.8 mm and nevertheless offering a full 1 m transmission range. the output intensity is adjustable by an external resistor to save current consumption in low power applications. tfdu4102 uses the same chipset in the well known babyface package. for operating only in the distance limited low power range (20 cm/ 30 cm) another device of this family, tfdu4201, with reduced ired drive current is recommended. features two more surface mount package options babyface universal tfdu4102: (9.7 4.7 4.0 mm 3 ) for in-board hidden mounting: side view dracula tfds4402 compatible to irda irphy 1.3 standard smd side view lowest power consumption 55 m a receive mode, 0.01 m a shutdown built-in current limitation output intensity adjustable by external resistor wide supply voltage range (2.4 v to 5.5 v) split power supply operational down to 2.0 v fewest external components eye safety: double safety measures: limited optical output pulse duration limited optical output intensity tristate output (rxd) high emi immunity applications mobile phones, pagers, personal digital assistants (pda), handheld battery operated equipment package options tfdu4102 baby face (universal weight 0.20 g tfds4402 dracula weight 0.20 g
tfdu4102/tfds4402 vishay semiconductors rev. a1.5, 13-oct-00 2 (11) www.vishay.com document number 82531 tfdu4102/ tfds4402 selector guide rxd output in txd mode ired drive capability irda compliance power supply tfdu4102 tfds4402 quiet**) necessary for some wince ) applications internally current controlled to cover full irda range. current level can be reduced by an external resistor low power sir as e.g. tfdu4201 or up to full irda sir distance > 1m split power supply*) can be used when operated at higher ired current levels *) split power supply: the receiver circut only is connected to a regulated power supply. the high ired current can be supplied by a less controlled power line or directly from the battery. that feature saves power supply costs. vishay indroduced this feature as the world first with the 4000series. **) depending on the designs different applications need an optical feedback for test purposes or must be quiet (e.g. in windows ce ) applications) ordering information part number qty / reel description tfdu4102tr3 1000 babyface, oriented in carrier tape for side view in mounting tfdu4102tt3 1000 babyface, oriented in carrier tape for top view in mounting tfds4402tr3 1000 dracula, oriented in carrier tape for side view in mounting functional block diagram comparator amplifier control logic tristatedriver txd gnd rxd control controlled driver v cc /sd v ccp figure 1. functional block diagram pin description tfdu4102/ tfds4402 pin symbol description i/o active 1 nc not connected 2 ired gnd ired cathode ground 3 rxd output, received data, tri-state, floating in shutdown mode (v cc /sd = low) o low 4 v cc supply voltage 5 v ccp supply voltage ired driver 6 sd shutdown 7 txd input, transmit data i high 8 gnd ground i high
tfdu4102/tfds4402 vishay semiconductors rev. a1.5, 13-oct-00 3 (11) www.vishay.com document number 82531 absolute maximum ratings reference point pin 8, unless otherwise noted. parameter test conditions symbol min. typ. max. unit remarks supply voltage range v cc 0.5 6 v su ly voltage range v ccp 0.5 6 v input current 10 ma all input pins output sink current 25 ma power dissipation p tot 200 mw junction temperature t j 125 5 c ambient temperature range (operating) t amb 25 85 5 c storage temperature range t stg 40 85 5 c soldering temperature t = 20 s @215 5 c 215 240 5 c see vishay irda design guide average ired current i ired (dc) 125 ma repetitive pulsed ired current i ired (rp) 500 ma <90 m s, t on <20% transmitter data input voltage v txd 0.5 v cc +0.5 v receiver data output voltage v rxd 0.5 v cc +0.5 v virtual source size (tfds4402/ tfdu4102 only) method: (11/e) encircled energy d 3 mm compatible to class 1 operation of iec 60825 or en60825 with worst case irda sir pulse pattern, 115.2 kbit/s
tfdu4102/tfds4402 vishay semiconductors rev. a1.5, 13-oct-00 4 (11) www.vishay.com document number 82531 electrical characteristics tested for the following parameters (v cc = 2.4 v to 5.5 v, 25 5 c, unless otherwise stated) parameter test conditions symbol min. typ. max. unit remarks transceiver supported data rates base band 9.6 115.2 kbit/s supply voltage range v cc 2.4 5.5 v operational down to 2.0 v supply current v cc = 2.4 v to 5.5 v, e e = 0 i s 65 80 m a receive mode, full temperature range v cc = 2.4 v to 5.5 v, 10 klx sunlight i s 70 90 m a receive mode, full temperature range, no signal v cc = v ccp = 2.7 v, 115.2 kbit/s transmission i s 70 80 m a transmit mode, full temperature range, or receive mode, nose to nose operation supply current, @ v ccp shutdown mode, v cc = 0 v i sshdown 0.02 1 10 m a na entire temperature range room temperature 20 5 c tfdu4102 and tfds4402 only: ired peak current transmitting i e = 60 mw/sr internal current limitation v ccp = 2.7 v i str 360 ma sir standard transceiver apower ona settling time 100 m s time from switching on v ccp to established specified operation
tfdu4102/tfds4402 vishay semiconductors rev. a1.5, 13-oct-00 5 (11) www.vishay.com document number 82531 optoelectronic characteristics tested for the following parameters (v cc = 2.4 v to 5.5 v, 25 5 c, unless otherwise stated) parameter test conditions symbol min. typ max. unit remarks receiver minimum detection threshold irradiance tfdu4102 only | a | 3+ 15 5 v cc = 2.4 v to 5.5 v 2.0 v e e, min 20 35 40 mw/m 2 mw/m 2 25 5 c tested maximum detection threshold irradiance | a | 3+ 90 5 v cc = 5 v e e, max 3300 5000 w/m 2 threshold irradiance | a | 3+ 90 5 v cc = 3 v e e, max 8000 15000 w/m 2 logic low receiver input irradiance e e,max,low 4 mw/m 2 output voltage rxd active v ol 0.5 0.8 v c = 15 pf, r = 2.2 k w non active v oh v cc 0.5 v c = 15 pf, r = 2.2 k w output current rxd v ol < 0.8 v 4 ma rise time @load: c = 15 pf, r = 2.2k t r 20 200 ns fall time @load: c = 15 pf, r = 2.2k t f 20 200 ns rxd signal electrical output pulse width 2.4 kbit/s, input pulse width 1.41 m s to 3/16 of bit duration t p 1.4 20 m s rxd signal electrical output pulse width 115.2 kbit/s, input pulse width 1.41 m s to 3/16 of bit duration t p 1.4 4.5 m s output delay time (rxd), leading edge optical input to electrical output output level = 0.5 v v cc @ 40 mw/m 2 t dl 1 2 m s jitter, leading edge of output signal over a period of 10 bit, 115.2 kbit/s t j 0.4 m s output delay time (rxd), trailing edge optical input to electrical output output level = 0.5 v v cc 40 mw/m 2 t dt 6.5 m s sd recovery time 100 m s latency t l 100 m s
tfdu4102/tfds4402 vishay semiconductors rev. a1.5, 13-oct-00 6 (11) www.vishay.com document number 82531 optoelectronic characteristics (continued) tested for the following parameters (v cc = 2.4 v to 5.5 v, 25 5 c, unless otherwise stated) parameter test conditions symbol min. typ max. unit remarks transmitter logic low transmitter input voltage v il (txd) 0 0.8 v logic high transmitter input voltage v ih (txd) 2.4 v cc v optical output radiant intensity | a | 3 + 15 5 i f1 = 320 ma, current internally controlled i e 45 mw/sr voltage range 2.7 v to 5.5 v peak emission wavelength l p 880 900 nm spectral emission bandwidth 60 nm optical rise/falltime 115.2 khz square wave signal (duty cycle 1:1) 200 ns optical output pulse duration input pulse duration 1.6 m s 1.5 1.6 1.7 m s voltage range 2.7 v to 5.5 v output radiant intensity logic low level 0.04 m w/sr overshoot, optical 25 % rising edge peak to peak jitter over a period of 10 bits, independent of information content t j 0.2 m s recommended smd pad layout 15067 0.6 7 x 1 = 7 8 1 1 2.5 figure 2. pad layout figure 3 shows the maximum operating temperature when the device is operated without external current limiting resistor. a power dissipating resistor of 2 w is recommended from the cathode of the ired to ground for supply voltages above 4 v. in that case the device can be operated up to 85 5 c, too. current derating diagram 50 55 60 65 70 75 80 85 90 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 operating voltage [v] @ duty cycle 20% ambient temperature ( c) 5 figure 3. current derating diagram
tfdu4102/tfds4402 vishay semiconductors rev. a1.5, 13-oct-00 7 (11) www.vishay.com document number 82531 tfdu4102 babyface (universal) package (mechanical dimensions) 12249
tfdu4102/tfds4402 vishay semiconductors rev. a1.5, 13-oct-00 8 (11) www.vishay.com document number 82531 tfds4402 dracula package (mechanical dimensions) 15971
tfdu4102/tfds4402 vishay semiconductors rev. a1.5, 13-oct-00 9 (11) www.vishay.com document number 82531 appendix application hints the tfdx4x02 family does not need any external components when operated at a acleana power supply. in a more noisy ambient it is recommended to add a capacitor c1 and a resistor r1 for noise suppression. a combination of a tantalum with a ceramics capacitor will be efficient to attenuate both, rf and lf. in the circuit schematics, a resistor r2 is added for decreasing the internal power dissipation. without that resistor the allowed ambient temperature is limited to 75 5 c for vccp > 4 v. with r2 = 2 w as serial resistor that is increased to 85 5 c. for higher operating voltages it is used reducing power dissipation inside the device. the power supply vccp must be able to source up to 550 ma current with a fast rise time. if that cannot be guaranteed an additional capacitor near pin 4 (vccp) should be included. the value is depended on the power supply quality. a good choice between 4.7 m f and 10 m f. recommended circuit diagram tfdu4102 tfds4402 r1 vccp rxd c1 gnd v cc txd 8 4 3 7 5 gnd v cc rxd txd v ccp r2 2 ired cathode sd 6sd c1; 4.7 m f shut down to shut down the tfdu4102 and tfds4402 into a standby mode the sd pin has to be set active high.in all two versions the rxd output is floating when the devices are in shut down mode. the txd input is high impedance in shut down mode. latency the receiver is in specified conditions after the defined latency. in a uart related application after that time (typically 50 m s) the receiver buffer of the uart must be cleared. therefore the transceiver has to wait at least the specified latency after receiving the last bit before starting the transmission to be sure that the corresponding receiver is in a defined state. for more application circuits, see irdc design guide and toim3...series data sheet table 1. recommended application circuit components component recommended value vishay part number c1 4.7 f, 16 v 293d 475x9 016b 2t
tfdu4102/tfds4402 vishay semiconductors rev. a1.5, 13-oct-00 10 (11) www.vishay.com document number 82531 revision history: a1.0, 21/06/1999: first edition of the target data sheet. a1.0a, 03/08/1999:comparsion of feature added on page 1, ordering information: pcs per reel changed. a1.1, 22/09/1999: babyface and dracula packages added. a1.3, 26/10/1999: derating curve included a1.5, 13/10/2000: typos corrected
tfdu4102/tfds4402 vishay semiconductors rev. a1.5, 13-oct-00 11 (11) www.vishay.com document number 82531 ozone depleting substances policy statement it is the policy of vishay semiconductor gmbh to 1. meet all present and future national and international statutory requirements. 2. regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment. it is particular concern to control or eliminate releases of those substances into the atmosphere which are known as ozone depleting substances (odss). the montreal protocol (1987) and its london amendments (1990) intend to severely restrict the use of odss and forbid their use within the next ten years. various national and international initiatives are pressing for an earlier ban on these substances. vishay semiconductor gmbh has been able to use its policy of continuous improvements to eliminate the use of odss listed in the following documents. 1. annex a, b and list of transitional substances of the montreal protocol and the london amendments respectively 2. class i and ii ozone depleting substances in the clean air act amendments of 1990 by the environmental protection agency (epa ) in the usa 3. council decision 88/540/eec and 91/690/eec annex a, b and c (transitional substances) respectively. vishay semiconductor gmbh can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain such substances. we reserve the right to make changes to improve technical design and may do so without further notice. parameters can vary in different applications. all operating parameters must be validated for each customer application by the customer. should the buyer use vishay semiconductors products for any unintended or unauthorized application, the buyer shall indemnify vishay semiconductors against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use. vishay semiconductor gmbh, p.o.b. 3535, d-74025 heilbronn, germany telephone: 49 ( 0 )7131 67 2831, fax number: 49 ( 0 )7131 67 2423
document number: 91000 www.vishay.com revision: 18-jul-08 1 disclaimer legal disclaimer notice vishay all product specifications and data are subject to change without notice. vishay intertechnology, inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, ?vishay?), disclaim any and all liability fo r any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. vishay disclaims any and all li ability arising out of the use or application of any product describ ed herein or of any information provided herein to the maximum extent permit ted by law. the product specifications do not expand or otherwise modify vishay?s terms and conditions of purcha se, including but not limited to the warranty expressed therein, which apply to these products. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of vishay. the products shown herein are not designed for use in medi cal, life-saving, or life-sustaining applications unless otherwise expressly indicated. customers using or selling vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify vishay for any damages arising or resulting from such use or sale. please contact authorized vishay personnel to obtain written terms and conditions regarding products designed for such applications. product names and markings noted herein may be trademarks of their respective owners.

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