TFDU4201
Vishay Telefunken
Integrated Low Profile Transceiver Module
for Telecom Applications – IrDA Standard
Description
The miniaturized TFDU4201 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 Low
Power standard of IrDA physical layer specification
version 1.2 up to a data rate of 115 kbit/s. For higher
output intensities with an identical package solution
the TFDU4202 is designed.
Package
Features
D
Package Dimension:
L 7.3 mm x W 4.55 mm x H 2.75 mm
D
Wide Supply Voltage Range (2.4 V to 5.5 V)
D
Operational down to 2.0 V
D
Fewest External Components
D
Internal Current Control
D
Tri–State Output (Rxd)
D
High EMI Immunity
D
Compatible to IrDA Telecom Standard
D
SMD Side View Soldering
D
Lowest Power Consumption
Transmission
55
µA,
Receive Mode, 1
µA
Shutdown
D
Only 30 mA IRED Peak Current During
Applications
Mobile Phones, Pagers, Personal Digital Assistants
(PDA), Handheld Battery Operated Equipment
Document Number 82515
Rev. A1.3, 13-Oct-00
www.vishay.com
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TFDU4201
Vishay Telefunken
µFace
SIR Selector Guide
Part
Number
TFDU4201
Main
Feature
Low Power
20 cm/ 30 cm
IrDA Standard
SD pin
Rxd Output
in Txd Mode
Optical
Feedback**)
(for e.g.
self-test mode)
IRED Drive
Capability
Internally
current
controlled,
adjusted for
I
e
>4 mW/sr
IrDA
Compliance
Low Power SIR,
pairs of TFDU4201
operate typically
over a range
of > 70 cm on axis
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
Split Power
Supply
Increased
Range 70 cm
Quiet**)
necessary for
some WinCE
®
applications,
Rxd grounded
when V
CC
= 0 V
TFDU4203
Similar to
TFDU4201 with
increased range
70 cm,
SD pin
Quiet**)
necessary for
some WinCE
®
applications
TFDU4204
Similar to
TFDU4202,
Logic Input and
Output Levels
Adapted
to 1.8 V Logic
Quiet**)
necessary for
some WinCE
®
applications,
Rxd output is
floating when
supply voltage
below 0.7 V
Internally
current
controlled to
cover extended
range of 70 cm.
Current level
can be reduced
by an external
resistor
Internally
current
controlled to
cover extended
range of 70 cm.
Current level
can be reduced
by an external
resistor
Internally
current
controlled to
cover extended
range of 70 cm.
Current level
can be reduced
by an external
resistor
Low Power SIR as e.g.
TFDU4201, pairs of
TFDU4202 operate
typically up to full IrDA
SIR distance >1 m
Low Power SIR as e.g.
TFDU4201, pairs of
TFDU4203 operate
typically up to full IrDA
SIR distance >1 m
One power
supply only
Low Power SIR as e.g.
TFDU4201, pairs of
TFDU4204 operate
typically up to full IrDA
SIR distance >1 m
Split power
supply*)
can be used
when operated
at higher IRED
current levels
*)
Split power supply: The receiver circuit 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 introdused 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).
**)
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Document Number 82515
Rev. A1.3, 13-Oct-00
TFDU4201
Vishay Telefunken
Ordering Information
Part Number
TFDU4201–TR1
TFDU4201–TR3
Qty / Reel
750
2250
Description
Orientated in carrier tape for side view in mounting
Orientated in carrier tape for side view in mounting
Functional Block Diagram
V
CC
Tri–State–Driver
Amplifier
Comparator
Rxd
Control
Logic
Controlled Driver
Txd
Control
SD
GND
Figure 1. Functional Block Diagram
Pin Description
Pin
1
2
3
4
5
6
7
8
Symbol
IRED GND
IRED GND
Rxd
V
CC
GND
GND
Txd
SD
Description
IRED Cathode, Ground
IRED Cathode, Ground
Output, Received Data, tri-state, floating in shutdown mode
Supply Voltage
Ground
Ground
Input, Transmit data
Shutdown
I/O
Active
O
LOW
I
I
HIGH
HIGH
Document Number 82515
Rev. A1.3, 13-Oct-00
www.vishay.com
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TFDU4201
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
V
CC
Min.
–0.5
Typ.
Max.
6
10
25
200
125
85
85
215
240
Unit
V
mA
mA
mW
°C
°C
°C
°C
see Vishay
Telefunken IrDA
Design Guide
<90
µs,
t
on
<20%
Remarks
all pins
see Figure
P
tot
T
J
T
amb
T
stg
t = 20 s @215°C
–25
–40
Average IRED Current*)
Repetitive Pulsed IRED
Current*)
Transmitter Data Input
Voltage
Receiver Data Output
Voltage
Virtual source size
I
IRED
(DC)
I
IRED
(RP)
V
Txd
V
Rxd
Method: (1–1/e)
encircled energy
d
–0.5
–0.5
2
125
500
5.5
V
CC
+0.5
mA
mA
V
V
mm
Compatible to Class 1 operation of IEC 60825 or EN60825 with worst case IrDA SIR pulse pattern,
115.2 kbit/s also in single fault conditions
*)
Note: Maximum values of IRED: Cannot be reached due to implemented current source.
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Document Number 82515
Rev. A1.3, 13-Oct-00
TFDU4201
Vishay Telefunken
Electrical Characteristics
Tested for the following parameters (V
CC
= 2.4 V to 5.5 V, 25°C, unless otherwise stated)
Parameter
Transceiver
Supported
Data Rates
Supply
Voltage Range
Test Conditions
Base band
V
CC
I
S
I
S
I
Sshdown
I
Str
Symbol
Min. Typ.
9.6
2.4
50
70
10
5
38
35
31
Max.
115.2
5.5
80
90
100
45
40
35
50
Unit
kbit/s
V
µA
µA
nA
nA
mA
mA
mA
µs
,
Receive Mode,
full Temperature Range
Entire Temperature Range
25°C
SIR Transmit
Time from Switching on
V
CC
to Established
Specified Operation
Operational Down to 2.0 V
Remarks
V
CC
= 2.4 V to 5.5 V,
E
e
= 0
V
CC
= 2.4 V to 5.5 V,
Supply Current
10 klx sunlight
Shutdown mode
V
SD
= 0.9 x V
CC
IRED Peak
V
CC
= 5.5 V
Current
V
CC
= 2.4 V
transmitting
V
CC
= 2.0 V
Transceiver
“Power On“
Settling Time
Electrical Characteristics
V
CC
= 2.8 V, 25°C, unless otherwise stated
Parameter
Transceiver
Test Conditions
Symbol
I
S
I
S
I
Sshdown
Min. Typ.
55
70
10
5
55
I
Str
35
Max.
80
90
100
10
Unit
µA
µA
nA
nA
nA
mA
µs
Remarks
Receive Mode,
,
full Temperature Range
Entire Temperature Range
25°C
E
e
= 0
E
e
= 10 klx sunlight
Shutdown mode
Supply Current V
SD
= 2.3 V,
E
e
= 0,
E
e
= 10 klx,
Standard Illuminant A
IRED Peak
Current
transmitting
Transceiver
“Power On“
Settling Time
Logic Input and Output levels
Input Voltage
SD, Txd
High
Input Voltage
SD, Txd
Low
Output Voltage Rxd, I
OH
= –2 mA
High
Output Voltage Rxd, I
OL
= 2 mA
Low
40
SIR Transmit
50
Time from Switching on
V
CC
to Established
Specified Operation
V
IH
V
IL
V
OH
V
OL
2.3
0.5
2.3
0.4
V
V
V
V
Document Number 82515
Rev. A1.3, 13-Oct-00
www.vishay.com
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