TFDU4202 Vishay Semiconductors Integrated Low Profile Transceiver Module for Telecom Applications - IrDA Standard Description The miniaturized TFDU4202 is an ideal transceiver for applications in telecommunications like mobile phones and pagers. The device is mechanically designed for lowest profile with a height of only 2.8 mm. The infrared transceiver is compatible to the latest IrDA® IrPHY specification up to a data rate of 115 kbit/s. At lower operating voltages up to 3.3 V the transceiver can be operated without external current limiting resistor to achieve a range > 1 m. The added feature is a split power supply for IRED driver (Vccp) and ASIC (Vccp). For operating only in the limited distance, low power range (20 cm/ 30 cm), TFDU4201 with built-in current control is recommended. For this device see the appropriate data sheet. 18170 Features • Package dimension microFace TFDU4202: L 7.1 mm x W 4.7 mm x H 2.8 mm e3 • Compatible to latest IrDA IrPHY standard • CIR Remote Control operation: Typical transmission range 8 m using standard RC-receivers. Receives RC-commands with typical specified sensitivity. • SMD Side View • Lowest power consumption 65 µA, receive mode, 0.01 µA 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 oulse duration Limited optical output intensity IEC60825-1, 2001: Class 1 • Push-pull output (RXD) • High EMI immunity • Split power supply, transmitter and receiver can be operated from two power supplies with relaxed requirements saving costs, US Patent No. 6,157,476 • Lead (Pb)-free device • Device in accordance to RoHS 2002/95/EC and WEEE 2002/96/EC Applications • • • • Mobile Phones Pagers Personal Digital Assistants (PDA) Handheld Battery Operated Equipment Parts Table Part Description Qty / Reel TFDU4202-TR1 Orientated in carrier tape for side view in mounting 750 pcs TFDU4202-TR3 Orientated in carrier tape for side view in mounting 2250 pcs Document Number 82541 Rev. 1.8, 05-Dec-05 www.vishay.com 1 TFDU4202 Vishay Semiconductors Functional Block Diagram Tri-State-Driver Amplifier RXD Comparator Control Logic Vccp TXD Control Controlled Driver 18190 VCC GND Pin Description Pin Number Function Description 1 IRED GND IRED cathode, ground 2 IRED GND IRED cathode, ground 3 RXD Output, received data, push-pull output 4 VCCP IRED supply voltage 5 GND Ground 6 GND Ground 7 TXD Input, transmit data I high Power supply voltage I high 8 *) VCC *) I/O Active O low VCC is allowed to be switched off for standby with Vccp applied. Pinout TFDU4202 weight 100 mg 18228 www.vishay.com 2 Document Number 82541 Rev. 1.8, 05-Dec-05 TFDU4202 Vishay Semiconductors Absolute Maximum Ratings Reference Point Pin 8, unless otherwise noted. Parameter Test Conditions Supply voltage range Input current Symbol Min Max Unit VCC - 0.5 Typ. 6 V Vccp - 0.5 6 V 10 mA all pins Output sink current Power dissipation Ptot Junction temperature TJ Ambient temperature range (operating) Storage temperature range Soldering temperature - 25 Tstg - 40 < 90µs, ton < 20 % mA mW 125 °C 85 °C 100 °C 260 °C IIRED(DC) 125 mA IIRED(RP) 500 mA see the chapter “Soldering conditions” for lead-bearing and Pb-free processing Average IRED current Repetitive pulsed IRED current Tamb 25 200 Transmitter data input voltage VTXD - 0.5 6 V Receiver data output voltage VRXD - 0.5 6 V Symbol Min Max Unit Eye safety information Parameter Virtual source size Test Conditions Method: (1 - 1/e) encircled energy d Typ. 2 mm Compatible to Class 1 operation of IEC 60825 or EN60825 with worst case IrDA SIR pulse pattern, 115.2 kbit/s Electrical Characteristics Transceiver Tested for the following parameters (VCC = 2.4 V to 5.5 V, - 25 °C to + 85 °C, unless otherwise stated). Parameter Supported data rates Test Conditions Symbol base band Min Typ. 9.6 Unit kbit/s Supply voltage range operational down to 2.0 V 5.5 V Supply current VCC = 2.4 V to 5.5 V, Ee = 0, receive mode, full temperature range IS 65 100 µA VCC = 2.4 V to 5.5 V, 10 klx sunlight, receive mode, full temperature range, no signal IS 70 100 µA VCC = 2.7 V, Vccp = 2.7 V, 115.2 kbit/s transmission, receive mode, nose to nose operation IS 1 shutdown mode, entire temperature range 20 °C ISshdown 0.02 VCC = 0 V, entire temperature range 20 °C Supply current at Vccp IRED peak current transmitting Ie = 40 mW/sr, no external resistor Vccp = 2.7 V, SIR standard Transceiver ‘power on‘ settling time time from switching on VCC to established specified operation Document Number 82541 Rev. 1.8, 05-Dec-05 VCC 2.4 Max 115.2 mA 1 µA ISshdown 10 nA IStr 360 mA 1 ms www.vishay.com 3 TFDU4202 Vishay Semiconductors Optoelectronic Characteristics Receiver Tested for the following parameters (VCC = 2.4 V to 5.5 V, - 25 °C to + 85 °C, unless otherwise stated). Parameter Minimum detection threshold irradiance (logic high receiver input irradiance) Maximum detection threshold irradiance Test Conditions Symbol | α | ≤ ± 15 °, VCC = 2.4 V to 5.5 V Ee, min 2.0 V, 25 °C tested Ee, min | α | ≤ ± 90 °, VCC = 5 V Ee, max | α | ≤ ± 90 °, VCC = 3 V Logic low receiver input irradiance Ee, max Min Typ. Max Unit 25 (2.5) 50 (5) mW/m2 50 100 3300 (330) 5000 (500) 8000 (800) 15000 (1500) (mW/cm2) W/m2 (mW/cm2) Ee, max,low mW/m2 (µW/cm2) µW/m2 Output voltage RXD active, C = 15 pF VOL 0 non active, C = 15 pF VOH VCC - 0.5 Output current RXD VOL < 0.5 V Rise time at load C = 15 pF, R = 2.2 kΩ tr mW/m2 W/m2 4 (0.4) Ee, max,low (µW/cm2) 0.5 V 4 mA 20 70 ns V Fall time at load C = 15 pF, R = 2.2 kΩ tf 20 70 ns RXD signal electrical output pulse width 2.4 kbit/s, input pulse width 1.41 µs to 3/16 of bit duration tp 1.41 20 µs 115.2 kbit/s, input pulse width 1.41 µs to 3/16 of bit duration tp 1.41 4.5 µs Output delay time (RXD), leading edge optical input to electrical output output level = tdl 2 µs Jitter, leading edge of output signal over a period of 10 bit, 115.2 kbit/s tj 400 ns tdt 6.5 µs 0.1 1 ms 100 200 µs Output delay time (RXD), trailing output level = edge optical input to electrical 0.5 x VCC @ 40 mW/m2 output Power on time, SD recovery time Latency www.vishay.com 4 1 0.5 x VCC @ 40 mW/m2 tL Document Number 82541 Rev. 1.8, 05-Dec-05 TFDU4202 Vishay Semiconductors Transmitter Symbol Min Max Unit Logic low transmitter input voltage Parameter Test Conditions VIL(TXD) - 0.5 0.15 x VCC V Logic high transmitter input voltage VIH(TXD) 0.8 x VCC 6 V Ie 45 λp 850 Output radiant intensity IF1 = 320 mA, | α | ≤ ± 15 °, current controlled by external resistor, voltage range 2.7 V to 5.5 V Peak emission wavelength Spectral emission bandwidth Typ. mW/sr 900 Optical rise/fall time 115.2 kHz square wave signal (duty cycle 1 : 1) Optical output pulse duration input pulse duration 1.6 µs 1.5 1.6 input pulse duration > 25 µs, safety protection Output radiant intensity logic low level Overshoot, optical Rising edge peak to peak jitter nm 60 over a period of 10 bits, independent of information content tj nm 200 ns 1.7 µs 25 µs 0.04 µW/sr 25 % 0.2 µs Truth table Inputs VCC TXD Outputs Optical input Irradiance mW/m2 RXD Transmitter low x x low 0 high high x high Ie high ≥ 25 µs x high 0 low <4 high 0 low > Min. detection threshold irradiance < Max. detection threshold irradiance x 0 low > Max. detection threshold irradiance undefined 0 Document Number 82541 Rev. 1.8, 05-Dec-05 www.vishay.com 5 TFDU4202 Vishay Semiconductors Application Hints Latency The TFDU4202 does not need any external component when operated with a "clean" 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. 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 µF and 10 µF. The receiver is in specified conditions after the defined latency. In a UART related application after that time (typically 50 µs) 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 TOIM4232 data sheet. Recommended Circuit Diagram Shut down The TFDU4202 can be shut down (disabled) by setting the VPP pin 8 low. The RXD output is floating when the devices are in shut down mode. The TXD input is high impedance in shut down mode. R1 C1 VCC /SD 8 VCC GND 5, 6 GND RXD 3 RXD TXD 7 TXD 4 VCCP Vccp R2 1, 2 IRED Cathode 18187 Table Recommended Application Circuit Components Component Recommended Value Vishay Part Number C1 4.7 µF, 16 V 293D 475X9 016B 2T R1 5 Ω ( 2 Ω to 47 Ω) This is a recommendation for a combination to start with to exclude power supply effects. Optimum, from a costs point of view, to work without both. www.vishay.com 6 Document Number 82541 Rev. 1.8, 05-Dec-05 TFDU4202 Vishay Semiconductors Temperature Derating Diagram The temperature derating diagram shows the maximum operating temperature when the device is operated without external current limiting resistor. A power dissipating resistor of 2 Ω 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 °C, too. 90 Ambient Temperature (°C) 85 80 75 70 65 60 55 50 2.0 2.5 3.0 3.5 4.5 4.0 5.0 5.5 6.0 Operating Voltage [V] at duty cycle 20 % 18097 Figure 1. Temperature Derating Diagram Recommended Solder Profile Solder Profile for Sn/Pb soldering 260 10 s max. at 230 °C 240 °C max. 240 Temperature/°C 220 2...4 °C/s 200 180 160 °C max. 160 140 120 s...180 s 120 90 s max. 100 80 2...4 °C/s 60 40 20 0 0 50 100 150 200 250 Time/s 300 350 19431_1 Lead-Free, Recommended Solder Profile The TFDU4202 is a lead-free transceiver and qualified for lead-free processing. For lead-free solder paste like Sn-(3.0 - 4.0)Ag-(0.5 - 0.9)Cu, there are two standard reflow profiles: Ramp-Soak-Spike (RSS) and Ramp-To-Spike (RTS). The Ramp-Soak-Spike profile was developed primarily for reflow ovens heated by infrared radiation. With widespread use of forced convection reflow ovens the Ramp-To-Spike profile is used increasingly. Shown below in figure 2 is Vishay’s recommended profile for use with the TFDU4202 transceivers. For more details please refer to Application note: SMD Assembly Instruction. Figure 2. Recommended Solder Profile for Sn/Pb soldering 275 T ≥ 255 °C for 10 s....30 s 250 225 Tpeak = 260 °C T ≥ 217 °C for 70 s max 200 Temperature/°C 175 150 30 s max. 125 100 90 s...120 s 70 s max. 2 °C...4 °C/s 75 2 °C...3 °C/s 50 25 0 0 19260 50 100 150 200 250 300 350 Time/s Figure 3. Solder Profile, RSS Recommendation Document Number 82541 Rev. 1.8, 05-Dec-05 www.vishay.com 7 TFDU4202 Vishay Semiconductors 280 Tpeak = 260 °C max. 260 240 220 200 Temperature/°C 180 <4 °C/s 160 1.3 °C/s 140 120 Time above 217 °C t ≤ 70 s Time above 255 °C t ≤ 30 s Peak temperature Tpeak = 260 °C 100 80 <2 °C/s 60 40 20 0 0 50 100 150 200 250 300 Time/s Figure 4. RTS Recommendation A ramp-up rate less than 0.9 °C/s is not recommended. Ramp-up rates faster than 1.3 °C/s could damage an optical part because the thermal conductivity is less than compared to a standard IC. www.vishay.com 8 Document Number 82541 Rev. 1.8, 05-Dec-05 TFDU4202 Vishay Semiconductors Package Dimensions 19821 Drawing-No.: 6.550-5185.01-4 Issue: 5; 02.09.05 Figure 5. Package drawing, TFDU4202 Document Number 82541 Rev. 1.8, 05-Dec-05 www.vishay.com 9 TFDU4202 Vishay Semiconductors Reel Dimensions 14017 mm mm mm mm mm mm mm Tape Width A max. N W1 min. W2 max. W3 min. W3 max. 16 180 60 16.4 22.4 15.9 19.4 16 330 50 16.4 22.4 15.9 19.4 www.vishay.com 10 Document Number 82541 Rev. 1.8, 05-Dec-05 TFDU4202 Vishay Semiconductors Tape Dimensions 19820 Drawing-No.: 9.700-5227.01-4 Issue: 3; 03.09.99 Figure 6. Tape drawing, TFDU4202 for side view mounting Document Number 82541 Rev. 1.8, 05-Dec-05 www.vishay.com 11 TFDU4202 Vishay Semiconductors 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 www.vishay.com 12 Document Number 82541 Rev. 1.8, 05-Dec-05 Legal Disclaimer Notice Vishay Notice Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc., or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Vishay for any damages resulting from such improper use or sale. Document Number: 91000 Revision: 08-Apr-05 www.vishay.com 1