TFDU6301-TT3 Vishay, TFDU6301-TT3 Datasheet - Page 6

• Manufacturer Part Number: TFDU6301-TT3
• Description: Infrared Transceivers FIR 4Mbit/s 2.4-3.6V Op Voltage
• Manufacturer: Vishay
• Type: TX/RXr

Specifications of TFDU6301-TT3

• Wavelength: 886 nm
• Continual Data Transmission: 4 Mbit/s
• Radiant Intensity: 180 mW/sr
• Half Intensity Angle Degrees: 48 deg
• Pulse Width: 2.2 us
• Maximum Rise Time: 40 ns
• Maximum Fall Time: 40 ns
• Maximum Forward Current: 150 mA
• Operating Voltage: 2.4 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 25 C
• Dimensions: 8.5 mm x 3.1 mm x 2.5 mm
• Data Rate: 4Mbps
• Peak Wavelength: 886nm
• Angle Of Half Sensitivity: 48°
• Package Type: SMD
• Fall Time: 40ns
• Rise Time: 40ns
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (min): 2.4V
• Operating Supply Voltage (max): 3.6V
• Mounting: Surface Mount
• Pin Count: 8
• Operating Temp Range: -25C to 85C
• Operating Temperature Classification: Commercial
• Idle Current, Typ @ 25° C: 1.8 mA
• Link Range, Low Power: 70cm
• Operating Temperature: -25°C ~ 85°C
• Orientation: Top View
• Shutdown: *
• Size: 8.5mm x 3.1mm x 2.5mm
• Standards: IrPHY 1.4
• Supply Voltage: 2.4 V ~ 3.6 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TFDU6301
Vishay Semiconductors
Notes
(1)
(2)
(3)
(4)
(5)
(6)
RECOMMENDED CIRCUIT DIAGRAM
Operated at a clean low impedance power supply the
TFDU6301 needs no additional external components.
However, depending on the entire system design and board
layout, additional components may be required (see figure 3).
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 only
necessary for high operating voltages and elevated
temperatures.
Vishay 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 inputs (TXD,
www.vishay.com
6
OPTOELECTRONIC CHARACTERISTICS
PARAMETER
Optical output pulse duration
Optical output pulse duration
Optical output pulse duration
Optical overshoot
T
production testing. All timing data measured with 4 Mbit/s are measured using the IrDA FIR transmission header. The data given here are
valid 5 µs after starting the preamble.
IrDA low power specification is 90 mW/m
IrDA sensitivity definition (equivalent to threshold irradiance): minimum irradiance E
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.
Maximum irradiance E
intensity in angular range at minimum link length must not cause receiver overdrive distortion and possible related link errors. If placed at the
active output interface reference plane of the transmitter, the receiver must meet its bit error ratio (BER) specification. For more definitions
see the document “Symbols and Terminology” on the Vishay website.
Maximum value is given by eye safety class 1, IEC 60825-1, simplified method.
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. Philips RC5/RC6
the RC range to be covered is in the range from 8 m to 12 m, provided that state of the art remote control receivers are used.
amb
= 25 °C, V
19307
SD
TXD
RXD
V
V
GND
CC2
CC1
Fig. 3 - Recommended Application Circuit
CC1
C1
= V
e
CC2
in angular range, power per unit area. The optical delivered to the detector by a source operating at the maximum
[e-mail], [e-mail],
R1
R2
= 2.4 V to 3.6 V unless otherwise noted. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to
For technical questions within your region, please contact one of the following:
C2
SD
TXD
RXD
IRED Cathode
IRED Anode
V
Ground
2
Fast Infrared Transceiver Module (FIR, 4 Mbit/s)
. Specification takes into account a window loss of 10 %.
Input pulse width 217 ns,
Input pulse width 125 ns,
Input pulse width 250 ns,
CC
for 2.4 V to 3.6 V Operation and Low-Voltage
TEST CONDITIONS
1.152 Mbit/s
4 Mbit/s
4 Mbit/s
®
or RECS 80. When operated under IrDA full range conditions (125 mW/sr)
Logic (1.8 V)
SD) and the output RXD should be directly (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
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. A tantalum capacitor should
be used for C1 while a ceramic capacitor is used for C2.
In addition, when connecting the described circuit to the
power supply, low impedance wiring should be used.
When extended wiring is used the inductance of the power
supply can cause dynamically a voltage drop at V
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 V
Keep in mind that basic RF-design rules for circuit design
should be taken into account. Especially longer signal lines
should not be used without termination. See e.g. “The Art of
Electronics” Paul Horowitz, Winfield Hill, 1989, Cambridge
University Press, ISBN: 0521370957.
SYMBOL
t
t
t
CC2
opt
opt
opt
e
[e-mail]
in angular range, power per unit area. The receiver must
will be helpful.
MIN.
207
117
242
CCx
and injected noise. An unstable
TYP.
217
125
250
Document Number: 84668
MAX.
227
133
258
Rev. 2.0, 18-Aug-09
25
CC2
UNIT
. Often
ns
ns
ns
%