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TFDU4102/TFDU4202/TFDS4402
Vishay Telefunken
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 IrDA IrPHY specification version 1.3 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 full SIR compliance (range > 1 m in full 15 cone). Vishay Telefunken's 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.This chipset is also available in the well known babyface package (TFDU4102). For operating only in the distance limited low power range (20 cm/ 30 cm), TFDU4201 with built-in current control is recommended.
Features
D Package Dimension Face TFDU4202:
L 7.3 mm x W 4.7 mm x H 2.8 mm
D Output Intensity Adjustable by External Resistor D Wide Supply Voltage Range (2.4 V to 5.5 V) D Split Power Supply D Operational down to 2.0 V D Fewest External Components D Eye Safety: Double Safety Measures:
Limited Optical Output Pulse Duration Limited Optical Output Intensity
D Two More Surface Mount Package Options
- - Babyface Universal TFDU4102: (9.7 x 4.7 x 4.0 mm3) For In-board Hidden Mounting: Side View Dracula TFDS4402
D Compatible to IrDA IrPHY 1.3 Standard D SMD Side View D Lowest Power Consumption D Built-in Current Limitation
55 A Receive Mode, 0.01 A Shutdown
D Tri-State Output (Rxd) D 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 0.22 g TFDU4202 Face Side View weight 0.10 g
Document Number 82531 Rev. A1.4, 11-Jul-00
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TFDU4102/TFDU4202/TFDS4402
Vishay Telefunken TFDU4201/TFDx4x02 Selector Guide
TFDU4201 Rxd Output in Txd Mode Optical Feedback**) (for e.g. selftest mode) Quiet**) necessary for some WinCE applications IRED Drive Capability Internally current controlled, adjusted for Ie > 4 mW/sr Internally current controlled to cover full IrDA range. Current level can be reduced by an external resistor IrDA Compliance Low Power SIR, pairs of TFDU4201 operate typically over a range of > 70 cm on axis Low Power SIR as e.g. TFDU4201 or up to full IrDA SIR distance > 1m Power Supply One power supply only, due to the very low current consumption no need for split power supply Split power supply*) can be used when operated at higher IRED current levels
TFDU4202 TFDU4102 TFDS4402
*)
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. TELEFUNKEN indroduced this feature as the world first with the 4000-series. 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 TFDU4202-TR1 TFDU4202-TR3 TFDU4102-TR3 TFDU4102-TT3 TFDS4402-TR3 Qty / Reel 750 2250 1000 1000 1000 Description Oriented in carrier tape for side view in mounting Oriented in carrier tape for side view in mounting Babyface, Oriented in carrier tape for side view in mounting Babyface, Oriented in carrier tape for top view in mounting Dracula, Oriented in carrier tape for side view in mounting
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Document Number 82531 Rev. A1.4, 11-Jul-00
TFDU4102/TFDU4202/TFDS4402
Vishay Telefunken Functional Block Diagram
Tri-State-Driver Amplifier Comparator Rxd
Control Logic Vccp Txd Control Controlled Driver
Vcc/SD
GND
Figure 1. Functional Block Diagram (TFDU4202)
Pin Description TFDU4202
Pin 1 2 3 4 5 6 7 8 Symbol IRED GND IRED GND Rxd VCCP GND GND Txd VCC/SD Description IRED Cathode Ground IRED Cathode Ground Output, Received Data, Tri-state, Floating in Shutdown Mode (VCC/SD = Low) Supply Voltage Ground Ground Input, Transmit Data Power Supply/ Shutdown I/O Active
O
LOW
I I
HIGH HIGH
Pin Description TFDU4102/ TFDS4402
Pin 1 2 3 4 5 6 7 8 Symbol NC IRED GND Rxd VCC VCCP SD Txd GND Description Not connected IRED Cathode Ground Output, Received Data, Tri-state, Floating in Shutdown Mode (VCC/SD = Low) Supply Voltage Supply Voltage IRED Driver Shutdown Input, Transmit Data Ground I/O Active
O
LOW
I I
HIGH HIGH
Document Number 82531 Rev. A1.4, 11-Jul-00
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TFDU4102/TFDU4202/TFDS4402
Vishay Telefunken 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 Test Conditions Symbol VCC VCCP Min. Typ. -0.5 -0.5 Max. 6 6 10 25 200 125 85 85 240 Unit Remarks V V mA All Input Pins mA mW C C C C
Ptot TJ Tamb Tstg t = 20 s @215C
-25 -40 215
See Vishay Telefunken IrDA Design Guide
Average IRED Current Repetitive Pulsed IRED Current Transmitter Data Input Voltage Receiver Data Output Voltage Virtual source size (TFDS4402/ TFDU4102 only) Virtual source size (TFDU4202 only)
IIRED(DC) IIRED(RP) VTxd VRxd Method: (1-1/e) encircled energy Method: (1-1/e) encircled energy d d -0.5 -0.5 3 2
125 500 VCC+0.5 VCC+0.5
mA mA <90 s, ton<20% V V mm mm
Compatible to Class 1 operation of IEC 60825 or EN60825 with worst case IrDA SIR pulse pattern, 115.2 kbit/s
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Document Number 82531 Rev. A1.4, 11-Jul-00
TFDU4102/TFDU4202/TFDS4402
Vishay Telefunken Electrical Characteristics
Tested for the following parameters (VCC = 2.4 V to 5.5 V, 25C, unless otherwise stated) Parameter Transceiver Supported Data Rates Supply Voltage Range Supply Current Test Conditions Base band VCC VCC = 2.4 V to 5.5 V, Ee = 0 VCC = 2.4 V to 5.5 V, 10 klx Sunlight VCC = VCCP = 2.7 V, 115.2 kbit/s transmission Supply Current, @ VCCP TFDU4202 only: IRED Peak Current Transmitting Shutdown Mode, VCC = 0 V Ie = 40 mW/sr internal current limitation VCCP = 2.7 V TFDU4102 and Ie = 60 mW/sr TFDS4402 only: internal current IRED Peak limitation Current Transmitting VCCP = 2.7 V Transceiver "Power On" Settling Time IS IS Symbol Min. Typ. Max. 9.6 2.4 65 70 Unit Remarks
115.2 kbit/s 5.5 80 90 V A A A Operational Down to 2.0 V Receive Mode, full Temperature Range Receive Mode, full Temperature Range, no signal Transmit Mode, full Temperature Range, or Receive Mode, Nose to Nose operation Entire Temperature Range Room Temperature 20C SIR Standard
IS
70
80
ISshdown IStr
0.02
1 10 360
A nA mA
IStr
360
mA
SIR Standard
100
s
Time from Switching on VCCP to Established Specified Operation
Document Number 82531 Rev. A1.4, 11-Jul-00
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TFDU4102/TFDU4202/TFDS4402
Vishay Telefunken Optoelectronic Characteristics
Tested for the following parameters (VCC = 2.4 V to 5.5 V, 25C, unless otherwise stated) Parameter Receiver Minimum Detection Threshold Irradiance TFDU4202 only Minimum Detection Threshold Irradiance TFDU4102 only Maximum Detection Threshold Irradiance Test Conditions || 15 VCC = 2.4 V to 5.5 V 2.0 V || 15 VCC = 2.4 V to 5.5 V 2.0 V || 90 VCC = 5 V || 90 VCC = 3 V Symbol Ee, min Min. Typ 35 Max. 70 70 35 40 Ee, max Ee, max Ee,max,low Active Non Active Output Current Rxd VOL < 0.8 V Rise Time @Load: C = 15 pF, R = 2.2k Fall Time @Load: C = 15 pF, R = 2.2k Rxd Signal Electrical Output Pulse Width Rxd Signal Electrical Output Pulse Width Output Delay Time (Rxd), Leading Edge Optical Input to Electrical Output Jitter, Leading Edge of Output Signal Output Delay Time (Rxd), Trailing Edge Optical Input to Electrical Output SD recovery Time Latency VOL VOH VCC-0.5 4 tr tf 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 Output Level = 0.5 VCC @ 40 mW/m2 tp 20 20 1.4 200 200 20 0.5 3300 8000 5000 15000 4 0.8 Unit mW/m2 mW/m2 25C tested mW/m2 mW/m2 25C tested W/m2 W/m2 mW/m2 V V mA ns ns s s s C = 15 pF, R = 2.2 k C = 15 pF, R = 2.2 k Remarks
Ee, min
20
Logic Low Receiver Input Irradiance Output Voltage Rxd
tp
1.4
4.5
tdl
1
2
Over a Period of 10 bit, 115.2 kbit/s Output Level = 0.5 VCC 40 mW/m2
tj tdt
0.4 6.5
s s
tL
100 100
s s
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Document Number 82531 Rev. A1.4, 11-Jul-00
TFDU4102/TFDU4202/TFDS4402
Vishay Telefunken
Optoelectronic Characteristics (continued)
Tested for the following parameters (VCC = 2.4 V to 5.5 V, 25C, unless otherwise stated) Parameter Transmitter Logic Low Transmitter Input Voltage Logic High Transmitter Input Voltage Optical Output Radiant Intensity || 15 Peak Emission Wavelength Spectral Emission Bandwidth Optical Rise/Falltime Test Conditions Symbol Min. Typ Max. VIL(Txd) 0 0.8 VCC Unit V V mW/sr Voltage Range 2.7 V to 5.5 V 900 60 115.2 kHz Square Wave Signal (duty cycle 1:1) Input Pulse Duration 1.6 s Logic Low Level Over a Period of 10 bits, Independent of Information Content tj 200 nm nm ns s Remarks
VIH(Txd) 2.4 IF1 = 320 mA, Current internally controlled Ie p 45
880
Optical Output Pulse Duration Output Radiant Intensity Overshoot, Optical Rising Edge Peak to Peak Jitter
1.5
1.6
1.7
Voltage Range 2.7 V to 5.5 V
0.04 W/sr 25 % 0.2 s
Recommended SMD Pad Layout
7 x 0.8 0.5
Current Derating Diagram
90 Ambient Temperature ( C)
85 80 75 70 65 60 55 50 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
2.3 1 0.8
15183
8
Operating Voltage [V] @ duty cycle 20%
Figure 2. Pad Layout TFDU4202 Figure 3 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 85C, too
Figure 3. Current Derating Diagram
Document Number 82531 Rev. A1.4, 11-Jul-00
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TFDU4102/TFDU4202/TFDS4402
Vishay Telefunken TFDU4202-(Mechanical Dimensions)
14484
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Document Number 82531 Rev. A1.4, 11-Jul-00
TFDU4102/TFDU4202/TFDS4402
Vishay Telefunken TFDU4102 - BabyFace (Universal) Package (Mechanical Dimensions)
12249
Issue: 8; 10.7.98
Document Number 82531 Rev. A1.4, 11-Jul-00
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TFDU4102/TFDU4202/TFDS4402
Vishay Telefunken TFDS4402 - Dracula Package (Mechanical Dimensions)
15971
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Document Number 82531 Rev. A1.4, 11-Jul-00
TFDU4102/TFDU4202/TFDS4402
Vishay Telefunken Appendix
Application Hints
The TFDx4x02 family does not need any external components when operated at 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. 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 75C for Vccp > 4 V. With R2 = 2 as serial resistor that is increased to 85C. 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 F and 10 F.
C1: 4.7 mF VCC GND 8 GND Rxd 3 Rxd Txd Vccp R2 7 Txd 5 Vccp 2 IRED Cathode SD 6 SD R1 C1 4 VCC TFDS4402 TFDU4102
Shut down
To shut down the TFDU4102 and TFDS4402 into a standby mode the SD pin has to be set active high. The TFDU4202 can be disabled (shut down) by setting the VCC/SD pin 8 low. In all three versions the Rxd output is floating when the devices are in shut down mode. The Txd input is high impedance in shut down mode.
Recommended Circuit Diagram
TFDU4202 C1: 4.7 mF VCC/SD GND 5, 6 GND Rxd 3 Rxd Txd 7 Txd Vccp 4 Vccp R2 IRED 1, 2 Cathode R1 C1 8 VCC/SD
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 TOIM3...-series data sheet
Table 1. Recommended Application Circuit Components
Component Recommended Value C1 4.7 mF, 16 V
Vishay Part Number 293D 475X9 016B 2T
Document Number 82531 Rev. A1.4, 11-Jul-00
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TFDU4102/TFDU4202/TFDS4402
Vishay Telefunken 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 A1.4, 11/07/2000: Typos corrected
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Document Number 82531 Rev. A1.4, 11-Jul-00
TFDU4102/TFDU4202/TFDS4402
Vishay Telefunken 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 Telefunken products for any unintended or unauthorized application, the buyer shall indemnify Vishay Telefunken 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 82531 Rev. A1.4, 11-Jul-00
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