TFDU4101-TR3 Vishay, TFDU4101-TR3 Datasheet - Page 7

• Manufacturer Part Number: TFDU4101-TR3
• Description: Infrared Transceivers SIR 115.2 kbits/s
• Manufacturer: Vishay
• Type: Serialr

Specifications of TFDU4101-TR3

• Data Transmission Rate: 2.4 Kbits/s to 115.2 Kbits/s
• Input Current: 10 mA
• Mounting Style: SMD/SMT
• Power Dissipation: 250 mW
• Wavelength: 900 nm
• Continual Data Transmission: 115.2 Kbit/s
• Transmission Distance: 1 m
• Radiant Intensity: 65 mW/sr
• Half Intensity Angle Degrees: 24 deg
• Pulse Width: 2.2 us
• Maximum Rise Time: 100 ns, 300 ns
• Maximum Fall Time: 100 ns, 300 ns
• Operating Voltage: 2.4 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 30 C
• Dimensions: 9.7 mm x 4.7 mm x 4 mm
• Data Rate Max: 115.2Kbps
• Data Transmission Distance: 1m
• Peak Wavelength: 900nm
• Supply Current: 90µA
• Supply Voltage Range: 2.4V To 5.5V
• Operating Temperature Range: -30°C To +85°C
• Msl: MSL 4 - 72 Hours
• Package: 8Ultra Small Profile
• Maximum Data Rate: 0.1152 Mbps
• Operating Supply Voltage: 2.4 to 5.5 V
• Operating Temperature Max: 85°C
• Rohs Compliant: Yes
• Current I Led Dc: 80mA
• Data Rate: 115.2kbs (SIR)
• Idle Current, Typ @ 25° C: 75µA
• Link Range, Low Power: 1m
• Operating Temperature: -30°C ~ 85°C
• Orientation: Side View
• Shutdown: *
• Size: 9.7mm x 4.7mm x 4mm
• Standards: IrPHY 1.0
• Supply Voltage: 2.4 V ~ 5.5 V
• Svhc: No SVHC (20-Jun-2011)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Recommended Circuit Diagram
Operated with a clean low impedance power supply
the
components. However, depending on the entire
system
components may be required (see figure 1). That is
especially the case when separate power supplies
are used for bench tests. When using compact wiring
and regulated supplies as e. g. in phone applications
in
necessary.
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.
Document Number 81288
Rev. 1.2, 04-Dec-07
most cases
TFDU4101
design
needs
and
no
external components
board
no
additional
layout,
additional
external
are
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 V
unstable power supply with dropping voltage during
transmission 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 power supply pins.
When extended wiring is used (bench tests!) the
inductance
dynamically a voltage drop at V
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 V
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 threshold
levels of the inputs and equivalent levels at the
outputs no interferences are expected.
One should keep in mind that basic RF - design rules
for circuit design should be taken into account.
of
CC2
the
will be helpful.
Vishay Semiconductors
power
CC1
and injected noise. An
supply
CC2
TFDU4101
. Often some
www.vishay.com
can
cause
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