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PDF TFDU4301 Data sheet ( Hoja de datos )
| Número de pieza | TFDU4301 | |
| Descripción | Infrared Transceiver Module | |
| Fabricantes | Vishay | |
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TFDU4301
Vishay Semiconductors
Infrared Transceiver Module (SIR, 115.2 kbit/s)
for IrDA® Applications
20101
DESCRIPTION
The TFDU4301 is a low profile (2.5 mm) infrared transceiver
module. It is compliant to the latest IrDA® physical layer
standard for fast infrared data communication, supporting
IrDA speeds up to 115.2 kbit/s (SIR) and carrier based
remote control. The transceiver module consists of a PIN
photodiode, an infrared emitter (IRED), and a low-power
control IC to provide a total front-end solution in a single
package.
This device covers an extended IrDA low power range of
close to 1 m. With an external current control resistor the
current can be adjusted for shorter ranges.
The RXD output pulse width is independent of the optical
input pulse width and stays always at a fixed pulse width thus
making the device optimum for standard endecs. TFDU4301
has a tri-state output and is floating in shut-down mode with
a weak pull-up.
APPLICATIONS
• Ideal for battery operated applications
• Telecommunication products (cellular phones, pagers)
• Digital still and video cameras
• Printers, fax machines, photocopiers, screen projectors
• Medical and industrial data collection
• Diagnostic systems
• Notebook computers, desktop PCs, palmtop computers
(Win CE, Palm PC), PDAs
• Internet TV boxes, video conferencing systems
• External infrared adapters (dongles)
• Data loggers
• GPS
• Kiosks, POS, point and pay devices including
IrFM - applications
FEATURES
• Compliant to the latest IrDA physical layer
specification (9.6 kbit/s to 115.2 kbit/s) and TV
remote control, bi-directional operation included
• Operates from 2.4 V to 5.5 V within specification
over full temperature range from - 30 °C to
+ 85 °C
• Split power supply, transmitter and receiver can
be operated from two power supplies with
relaxed requirements saving costs, US patent
no. 6.157.476
• Extended IrDA low power range to about 70 cm
• Typical remote control range 12 m
• Low power consumption (< typ. supply current 70 µA)
• Power shutdown mode (< 1 µA shutdown current in full
temperature range, up to 85 °C)
• Low profile (2.5 mm) (L x W x H in mm): 8.5 × 2.5 × 3.1
• Surface mount package
• High efficiency emitter
• Low profile (universal) package capable of surface mount
soldering to side and top view orientation
• Directly interfaces with various super I/O and controller
devices as e.g. TOIM4232 or TOIM5232
• Tri-state-receiver output, floating in shut down with a weak
pull-up
• Compliant with IrDA background light specification
• EMI immunity in GSM bands > 300 V/m verified
• Qualified for lead (Pb)-free and Sn/Pb processing (MSL4)
• Compliant to RoHS directive 2002/95/EC and in
accordance to WEEE 2002/96/EC
PRODUCT SUMMARY
PART NUMBER
DATA RATE
(kbit/s)
TFDU4301
115.2
DIMENSIONS
HxLxW
(mm x mm x mm)
3.1 x 8.5 x 2.5
LINK DISTANCE
(m)
0 to ≥ 0.7
OPERATING
VOLTAGE
(V)
2.4 to 5.5
PARTS TABLE
PART
TFDU4301-TR1
TFDU4301-TR3
TFDU4301-TT1
TFDU4301-TT3
DESCRIPTION
Oriented in carrier tape for side view surface mounting
Oriented in carrier tape for side view surface mounting
Oriented in carrier tape for top view surface mounting
Oriented in carrier tape for top view surface mounting
IDLE SUPPLY
CURRENT
(mA)
0.07
QTY/REEL
750 pcs
2500 pcs
750 pcs
2500 pcs
Document Number: 81965 For technical questions within your region, please contact one of the following:
Rev. 1.0, 22-Apr-10
www.vishay.com
1
Free Datasheet http://www.datasheet4u.com/
1 page  
TFDU4301
Infrared Transceiver Module (SIR, 115.2 kbit/s) Vishay Semiconductors
for IrDA® Applications
OPTOELECTRONIC CHARACTERISTICS (1)
PARAMETER
TEST CONDITIONS
SYMBOL MIN.
TYP.
MAX.
UNIT
TRANSMITTER
Optical rise time, fall time
Optical output pulse duration
Optical overshoot
Input pulse width 1.6 < tTXD < 23 µs
Input pulse width tTXD ≥ 23 µs
tropt, tfopt
topt
topt
10
tTXD - 0.15
23
50 300 ns
tTXD + 0.15
µs
50 100 µs
25 %
Note
(1) Tested at Tamb = 25 °C, VCC1 = VCC2 = 2.4 V to 5.5 V unless otherwise noted.
Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
(2) Equivalent to IrDA background light and electromagnetic field test: fluorescent lighting immunity.
(3) IrDA sensitivity definition: minimum irradiance Ee in angular range, power per unit area. The receiver must meet the BER specification while
the source is operating at the minimum intensity in angular range into the minimum half-angular range at the maximum link length.
(4) Maximum irradiance Ee in angular range, power per unit area. The optical delivered to the detector by a source operating at the maximum
intensity in angular range at minimum link length must not cause receiver overdrive distortion and possible ralated link errors. If placed at the
active output interface reference plane of the transmitter, the receiver must meet its bit error ratio (BER). For more definitions see the
document “Symbols and Terminology” on the Vishay website.
(5) Using an external current limiting resistor is allowed and recommended to reduce IRED intensity and operating current when current reduction
is intended to operate at the IrDA low power conditions. E.g. for VCC2 = 3.3 V a current limiting resistor of RS = 56 Ω will allow a power
minimized operation at IrDA low power conditions.
(6) Due to this wavelength restriction compared to the IrDA spec of 850 nm to 900 nm the transmitter is able to operate as source for the standard
remote control applications with codes as e.g. Phillips RC5/RC6® or RECS 80.
RECOMMENDED CIRCUIT DIAGRAM
Operated with a clean low impedance power supply the
TFDU4301 needs no additional external components.
However, depending on the entire system design and board
layout, additional components may be required (see figure 1).
VIRED
VCC
GND
R1*)
R2
C1 C2
VCC2, IRED A
V
CC1
Ground
SD SD
TXD
TXD
RXD
RXD
19295-1
IRED C
Fig. 1 - Recommended Application Circuit
Note
*) R1 is optional when reduced intensity is used
The capacitor C1 is buffering the supply voltage and
eliminates the inductance of the power supply line. This one
should be a tantalum or other fast capacitor to guarantee the
fast rise time of the IRED current. The resistor R1 is the
current limiting resistor, which may be used to reduce the
operating current to levels below the specified controlled
values for saving battery power.
Vishay’s transceivers integrate a sensitive receiver and a
built-in power driver. The combination of both needs a
careful circuit board layout. The use of thin, long, resistive
and inductive wiring should be avoided. The shutdown input
must be grounded for normal operation, also when the
shutdown function is not used.
TABLE 1 - RECOMMENDED APPLICATION
CIRCUIT COMPONENTS
COMPONENT
C1
C2
R1
R2
RECOMMENDED
VALUE
4.7 µF, 16 V
0.1 µF, ceramic
Depends on current
to be adjusted
47 Ω, 0.125 W
VISHAY PART NUMBER
293D 475X9 016B
VJ 1206 Y 104 J XXMT
CRCW-1206-47R0-F-RT1
The inputs (TXD, SD) and the output RXD should be directly
connected (DC - coupled) to the I/O circuit. The capacitor C2
combined with the resistor R2 is the low pass filter for
smoothing the supply voltage. R2, C1 and C2 are optional
and dependent on the quality of the supply voltages VCC1
and injected noise. An unstable power supply with dropping
voltage during transmision may reduce the sensitivity (and
transmission range) of the transceiver.
The placement of these parts is critical. It is strongly
recommended to position C2 as close as possible to the
transceiver pins.
When extended wiring is used as in bench tests the
inductance of the power supply can cause dynamically a
voltage drop at VCC2. Often some power supplies are not
able to follow the fast current rise time. In that case another
4.7 µF (type, see table under C1) at VCC2 will be helpful.
Under extreme EMI conditions as placing an
RF-transmitter antenna on top of the transceiver, we
recommend to protect all inputs by a low-pass filter, as a
minimum a 12 pF capacitor, especially at the RXD port. The
transceiver itself withstands EMI at GSM frequencies above
500 V/m. When interference is observed, the wiring to the
inputs picks it up. It is verified by DPI measurements that as
long as the interfering RF - voltage is below the logic
Document Number: 81965 For technical questions within your region, please contact one of the following:
Rev. 1.0, 22-Apr-10
www.vishay.com
5
Free Datasheet http://www.datasheet4u.com/
5 Page 
TFDU4301
Infrared Transceiver Module (SIR, 115.2 kbit/s) Vishay Semiconductors
for IrDA® Applications
19856
Drawing-No.: 9.700-5279.01-4
Issue: 1; 08.12.04
19856
Fig. 8 - Tape Drawing, TFDU4301 for Side View Mounting
Document Number: 81965 For technical questions within your region, please contact one of the following:
Rev. 1.0, 22-Apr-10
www.vishay.com
11
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet TFDU4301.PDF ] | |
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