TFDU4100-TT3 Vishay, TFDU4100-TT3 Datasheet - Page 5

• Manufacturer Part Number: TFDU4100-TT3
• Description: Infrared Transceivers SIR 115.2kbits TOP VIEW
• Manufacturer: Vishay

Specifications of TFDU4100-TT3

• Wavelength: 900 nm
• Continual Data Transmission: 115.2 Kbit/s
• Radiant Intensity: 140 mW/sr
• Half Intensity Angle Degrees: 48 deg
• Pulse Width: 4 us
• Maximum Rise Time: 200 ns, 600 ns
• Maximum Fall Time: 200 ns, 600 ns
• Led Supply Voltage: - 0.5 V to 6 V
• Maximum Forward Current: 100 mA
• Operating Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 25 C
• Dimensions: 9.7 mm x 4.7 mm x 4 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Optoelectronic Characteristics (Cont’d)
Notes
a.
b.
c.
d.
e.
Recommended Circuit Diagram
The only required components for designing an IrDA 1.2
compatible design using TEMIC SIR transceivers are a
current limiting resistor to the IRED. However,
depending on the entire system design and board layout,
additional components may be required (see Figure 1).
It is recommended that the capacitors C1 and C2 are
positioned as near as possible to the transceiver power
supply pins, as in the proposed layout in Figure 1. A
tantalum capacitor should be used for C1, while a ceramic
capacitor should be used for C2 to suppress RF noise.
Also, when connecting the described circuit to the power
supply, low impedance wiring should be used.
R1 is used for controlling the current through the IR
emitter. For increasing the output power of the IRED, the
value of the resistor should be reduced. Similarly, to
reduce the output power of the IRED, the value of the
resistor should be increased. For typical values of R1 see
Fig 2. For IrDA compliant operation, a current control
resistor of 8–12
current limitation is dependent on the duty cycle and is
Transmitter
IRED Operating Current
Logic Low Transmitter Input Voltage
Logic High Transmitter Input Voltage
Output Radiant Intensity
Output Radiant Intensity
Angle of Half Intensity
Peak Wavelength of Emission
Halfwidth of Emission Spectrum
Optical Rise Time, Fall Time
Optical Overshoot
Rising Edge Peak–to–Peak Jitter
TELEFUNKEN
Semiconductor
Pending—Rev. A, 03-Apr-98
T
The algebraic convention whereby the most negative value is a minimum and the most positive a maximum.
Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
IRED Operating Current can be adjusted by variation of R
In agreement with IEC 825 eye safety limit
amb
= 25_C, V
Parameter
CC
= 2.7 – 5.5 V unless otherwise noted.
d
e
is recommended. The upper drive
TFDU4100/TFDS4500/TFDT4500
V
V
Symbol
IH
IL
t
R
I
I
I
eH
eL
t
(T
, t
D
(T
P
j
Pre-Release Information
F
xd
xd
)
)
Current limiting resistor is series to
IRED: R
Over a period of 10 bits, independent
IRED: R
Current limiting resistor in series to
115.2 kHz square wave signal, duty
1
of information content
1
Test Conditions
1
Logic Low Level
= 8.2 , V
= 8.2 @ V
cycle 1:1
given by the absolute maximum ratings on the data sheet
and the eye safety limitations given by IEC825–1.
R2, C1 and C2 are optional and dependent on the quality
of the supply voltage V
Note: Outlined components are optional depending on quality of
power supply.
V
15_
CC1/
V
GND
CC2
CC2
Rxd
Txd
SC
SD
Figure 1. Recommended Application Circuit
CC2
= 5V
a
= 5V,
=
C1
R2
Min
880
2.4
45
0
b
CC1
C2
Typ
140
200
0.3
and injected noise. An
60
24
IRED
Cathode
Rxd
V
GND
c
CC1/
TFDx4x00
SD
V
Max
CC1
0.04
200
900
600
0.4
0.8
0.2
25
Anode
IRED
+0.5
Txd
NC
b
SC
mW/sr
mW/sr
Unit
nm
nm
ns
%
A
V
V
R1
_
s
5