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參數(shù)資料
| 型號： | TFDU8108 |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | Very Fast IrDA in Standard package |
| 中文描述： | 非?？焖俚腎rDA標(biāo)準(zhǔn)包裝 |
| 文件頁數(shù)： | 8/27頁 |
| 文件大?。?/td> | 820K |
| 代理商： | TFDU8108 |
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www.vishay.com
8
Document Number 82558
Rev. 1.6, 12-Aug-04
TFDU8108
Vishay Semiconductors
Recommended Circuit Diagram
Operated with a low impedance power supply the
TFDU8108 needs no external components. However,
depending on the entire system design and board lay-
out, additional components may be required (see fig-
ure 1).
Vishay Semiconductors transceivers integrate a sen-
sitive receiver and a built-in power driver. The combi-
nation of both needs a careful circuit board layout.
The use of thin, long, resistive and inductive wiring
should be avoided. The inputs (Txd, SCLK) and the
output Rxd should be directly (DC) coupled to the I/O
circuit.
R1 is used for controlling the maximum current
through the IR emitter. This one is necessary when
operating over the full range of operating temperature
and V
CC1
- voltages above 4 V. For increasing the
max. output power of the IRED, the value of the resis-
tor should be reduced. It should be dimensioned to
keep the IRED anode voltage below 4 V for using the
full temperature range. For device and eye protection
the pulse duration and current are internally limited.
R2, C1 and C2 are optional and dependent on the
quality of the supply voltage V
CC1
and injected noise.
An unstable power supply with dropping voltage dur-
ing transmission may reduce sensitivity (and trans-
mission range) of the transceiver.
The placement of these parts is critical. It is strongly
recommended to position C2 close to the transceiver
power supply pins. An electrolytic capacitor should be
used for C1 while a ceramic capacitor is used for C2.
Recommended Application Circuit Com-
ponents
I/O and Software
For operating the device from a Controller I/O a driver
software must be implemented.
Mode Switching
The generic IrDA "Serial Interface programming"
needs no special settings for the device. Only the cur-
rent control table must be taken into account. For the
description see the Appendix and the IrDA "Serial
Interface specification for transceivers"
Figure 1. Recommended Application Circuit
All external components (R, C) are optional
IRED
Cathode
IRED
Anode
Rxd
Vcc
GND
Txd
SCLK
V
logic
C2
C1
R2
R1
V
CC2
Rxd
GND
V
CC1
SCLK
Txd
V
logic
17089
Component
C1
C2
R1
Recommended Value
4.7
μ
F, 16 V
0.1
μ
F, Ceramic, 16 V
Recommended for V
CC1
≥
4 V
Depending on current limit
4.7
, 0.125 W
R2
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| TFDU8108-TR3 | 功能描述:紅外收發(fā)器 16 Meg Ir Data Trnsc RoHS:否 制造商:Vishay Semiconductors 波長:900 nm 連續(xù)數(shù)據(jù)傳輸:115.2 Kbit/s 傳輸距離:1 m 輻射強度:60 mW/sr 半強度角度:44 deg 脈沖寬度:2 us 最大上升時間:100 ns 最大下降時間:100 ns LED 電源電壓:- 0.5 V to 6 V 最大正向電流:80 mA 工作電壓:2.4 V to 5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 25 C 尺寸:6 mm x 3.1 mm x 1.9 mm 封裝 / 箱體: 封裝:Reel |
| TFDU8108-TT3 | 功能描述:紅外收發(fā)器 VFIR 16Mbit/s 2.7-5.5V Op Voltage RoHS:否 制造商:Vishay Semiconductors 波長:900 nm 連續(xù)數(shù)據(jù)傳輸:115.2 Kbit/s 傳輸距離:1 m 輻射強度:60 mW/sr 半強度角度:44 deg 脈沖寬度:2 us 最大上升時間:100 ns 最大下降時間:100 ns LED 電源電壓:- 0.5 V to 6 V 最大正向電流:80 mA 工作電壓:2.4 V to 5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 25 C 尺寸:6 mm x 3.1 mm x 1.9 mm 封裝 / 箱體: 封裝:Reel |
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