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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(R) 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 A, receive mode, 0.01 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 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 TFDU4202-TR1 TFDU4202-TR3 Document Number 82541 Rev. 1.8, 05-Dec-05 Description Orientated in carrier tape for side view in mounting Orientated in carrier tape for side view in mounting 750 pcs 2250 pcs www.vishay.com 1 Qty / Reel
TFDU4202
Vishay Semiconductors Functional Block Diagram
Tri-State-Driver Amplifier Comparator RXD
Control Logic Vccp TXD Control Controlled Driver
18190
VCC
GND
Pin Description
Pin Number 1 2 3 4 5 6 7 8
*)
Function IRED GND IRED GND RXD VCCP GND GND TXD VCC
*)
Description IRED cathode, ground IRED cathode, ground Output, received data, push-pull output IRED supply voltage Ground Ground Input, transmit data Power supply voltage
I/O
Active
O
low
I I
high high
VCC is allowed to be switched off for standby with Vccp applied.
Pinout
TFDU4202 weight 100 mg
18228
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Document Number 82541 Rev. 1.8, 05-Dec-05
TFDU4202
Vishay Semiconductors Absolute Maximum Ratings
Reference Point Pin 8, unless otherwise noted. Parameter Supply voltage range Input current Output sink current Power dissipation Junction temperature Ambient temperature range (operating) Storage temperature range Soldering temperature see the chapter "Soldering conditions" for lead-bearing and Pb-free processing IIRED(DC) < 90s, ton < 20 % IIRED(RP) VTXD VRXD - 0.5 - 0.5 Ptot TJ Tamb Tstg - 25 - 40 all pins Test Conditions Symbol VCC Vccp Min - 0.5 - 0.5 Typ. Max 6 6 10 25 200 125 85 100 260 Unit V V mA mA mW C C C C
Average IRED current Repetitive pulsed IRED current Transmitter data input voltage Receiver data output voltage
125 500 6 6
mA mA V V
Eye safety information
Parameter Virtual source size Test Conditions Method: (1 - 1/e) encircled energy Symbol d Min Typ. 2 Max Unit 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 Supply voltage range Supply current Test Conditions base band operational down to 2.0 V VCC = 2.4 V to 5.5 V, Ee = 0, receive mode, full temperature range VCC = 2.4 V to 5.5 V, 10 klx sunlight, receive mode, full temperature range, no signal VCC = 2.7 V, Vccp = 2.7 V, 115.2 kbit/s transmission, receive mode, nose to nose operation Supply current at Vccp shutdown mode, entire temperature range 20 C VCC = 0 V, entire temperature range 20 C IRED peak current transmitting Ie = 40 mW/sr, no external resistor Vccp = 2.7 V, SIR standard time from switching on VCC to established specified operation VCC IS Symbol Min 9.6 2.4 65 Typ. Max 115.2 5.5 100 Unit kbit/s V A
IS
70
100
A
IS
1
mA
ISshdown ISshdown IStr
0.02
1 10 360
A nA mA
Transceiver `power on` settling time Document Number 82541 Rev. 1.8, 05-Dec-05
1
ms
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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 | | 15 , VCC = 2.4 V to 5.5 V 2.0 V, 25 C tested | | 90 , VCC = 5 V | | 90 , VCC = 3 V Logic low receiver input irradiance Symbol Ee, min Min Typ. 25 (2.5) 50 3300 (330) 8000 (800) 5000 (500) 15000 (1500) 4 (0.4) Max 50 (5) 100 Unit mW/m2 (W/cm2) mW/m2 W/m2 (mW/cm2) W/m2 (mW/cm2) mW/m2 (W/cm2) W/m2 0 VCC - 0.5 4 tr tf tp tp tdl 20 20 1.41 1.41 1 70 70 20 4.5 2 0.5 V V mA ns ns s s s
Ee, min Ee, max Ee, max Ee, max,low Ee, max,low
Output voltage RXD Output current RXD Rise time at load Fall time at load RXD signal electrical output pulse width
active, C = 15 pF non active, C = 15 pF VOL < 0.5 V C = 15 pF, R = 2.2 k C = 15 pF, R = 2.2 k 2.4 kbit/s, input pulse width 1.41 s to 3/16 of bit duration 115.2 kbit/s, input pulse width 1.41 s to 3/16 of bit duration
VOL VOH
Output delay time (RXD), leading edge optical input to electrical output Jitter, leading edge of output signal
output level = 0.5 x VCC @ 40 mW/m2 over a period of 10 bit, 115.2 kbit/s
tj tdt
400 6.5
ns s
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
0.1 tL 100
1 200
ms s
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Document Number 82541 Rev. 1.8, 05-Dec-05
TFDU4202
Vishay Semiconductors Transmitter
Parameter Logic low transmitter input voltage Logic high transmitter input voltage Output radiant intensity IF1 = 320 mA, | | 15 , current controlled by external resistor, voltage range 2.7 V to 5.5 V Test Conditions Symbol VIL(TXD) VIH(TXD) Ie Min - 0.5 0.8 x VCC 45 Typ. Max 0.15 x VCC 6 Unit V V mW/sr
Peak emission wavelength Spectral emission bandwidth Optical rise/fall time Optical output pulse duration 115.2 kHz square wave signal (duty cycle 1 : 1) input pulse duration 1.6 s input pulse duration > 25 s, safety protection Output radiant intensity Overshoot, optical Rising edge peak to peak jitter over a period of 10 bits, independent of information content logic low level
p
850 60
900 200
nm nm ns s s W/sr % s
1.5
1.6
1.7 25 0.04 25
tj
0.2
Truth table
Inputs VCC low high TXD x high high 25 s low low low Optical input Irradiance x x x <4 > Min. detection threshold irradiance < Max. detection threshold irradiance > Max. detection threshold irradiance mW/m2 RXD low high high high x undefined Outputs Transmitter 0 Ie 0 0 0 0
Document Number 82541 Rev. 1.8, 05-Dec-05
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TFDU4202
Vishay Semiconductors Application Hints
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 F and 10 F.
Latency
The receiver is in specified conditions after the defined latency. In a UART related application after that time (typically 50 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 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 VCC /SD GND RXD TXD Vccp R2 1, 2 IRED Cathode
18187
C1 8 VCC
5, 6 GND 3 7 4 RXD TXD VCCP
Table Recommended Application Circuit Components
Component C1 R1 Recommended Value 4.7 F, 16 V 5 ( 2 to 47 ) Vishay Part Number 293D 475X9 016B 2T
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.
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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 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 85 Ambient Temperature (C) 80 75 70 65 60 55 50 2.0
18097
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Operating Voltage [V] at duty cycle 20 %
Figure 1. Temperature Derating Diagram
Recommended Solder Profile
Solder Profile for Sn/Pb soldering
260 240 220 200 180 160 140 120 100 80 60 40 20 0 0 50 100 150 200 250 300 350 19431_1
240 C max.
10 s max. at 230 C
2...4 C/s 160 C max. 120 s...180 s 2...4 C/s
90 s max.
Time/s
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.
Temperature/C
Figure 2. Recommended Solder Profile for Sn/Pb soldering
275 250 225 200 175 Temperature/C 150
T 255 C for 10 s....30 s
Tpeak = 260 C
T 217 C for 70 s max
30 s max.
125 100 75 50 25 0 0 50 100 150 Time/s 200 250 300 350
90 s...120 s
70 s max. 2 C...4 C/s
2 C...3 C/s
19260
Figure 3. Solder Profile, RSS Recommendation Document Number 82541 Rev. 1.8, 05-Dec-05 www.vishay.com 7
TFDU4202
Vishay Semiconductors
280 260 240 220 200 180 Temperature/C 160 140 120 100 80 60 40 20 0 0 50 100 150 Time/s 200 250 300 Time above 217 C t 70 s Time above 255 C t 30 s Peak temperature Tpeak = 260 C 1.3 C/s <4 C/s Tpeak = 260 C max.
<2 C/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.
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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
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TFDU4202
Vishay Semiconductors Reel Dimensions
14017
mm Tape Width 16 16
mm A max. 180 330
mm N 60 50
mm W1 min. 16.4 16.4
mm W2 max. 22.4 22.4
mm W3 min. 15.9 15.9
mm W3 max. 19.4 19.4
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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
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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
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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
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